# Cr–Si system

> Cr–Si system: 111 accepted literature values (invariant reaction 52, formation 29, phase transition 24, crystal structure 6) and 7 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote.

HTML: https://data.orchid-project.org/systems/CR-SI.html · Markdown: https://data.orchid-project.org/systems/CR-SI.md

111 accepted literature values from 5 paper(s) (experimental 40, model 52, unspecified 19); 7 calculated phase diagram(s). 5 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

Data: [JSON](https://data.orchid-project.org/literature/systems/CR-SI.json) · [CSV](https://data.orchid-project.org/systems/CR-SI.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#CR-SI) · [interactive phase diagram](https://orchid-project.org/phase-diagrams/#CR-SI/CrSi-00Du.json) · [phases (12)](https://data.orchid-project.org/phases/pages/CR-SI.html) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/CR-SI.html) · [Markdown](https://data.orchid-project.org/systems/CR-SI.md)

Table: Accepted values by evidence class

| Evidence class | Values |
|---|---:|
| experimental | 40 |
| model | 52 |
| unspecified | 19 |

Table: Accepted values by property group

| Property group | Values |
|---|---:|
| invariant reaction | 52 |
| phase transition | 24 |
| formation | 29 |
| crystal structure | 6 |

## Calculated phase diagrams

Binary phase diagrams calculated with pycalphad 0.11.2 from the SGTE binary collection (Hallstedt 2025, CC BY 4.0). Evidence class: model.

Table: Assessments with a calculated phase diagram

| TDB file | Assessment | SHA-256 | Links |
|---|---|---|---|
| CrSi-00Du.tdb | Y. Du, J.C. Schuster, J. Phase Equilib., 21, 281-86(2000). [doi:10.1361/105497100770340066](https://doi.org/10.1361/105497100770340066) | `fe0ed81391034f693aa1bd734301b9e76527d6263cfc3087bf4f819bec9e385c` | [viewer](https://orchid-project.org/phase-diagrams/#CR-SI/CrSi-00Du.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CrSi-00Du.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CrSi-00Du.json) |
| CrSi-09Che.tdb | H. Chen, Y. Du, J.C. Schuster, Calphad 33, 211-14(2009). [doi:10.1016/j.calphad.2008.05.005](https://doi.org/10.1016/j.calphad.2008.05.005) | `0dbac86b6c49e373ef8560311d8e352757f68be5ee36b8d502c8a37adcbab8fd` | [viewer](https://orchid-project.org/phase-diagrams/#CR-SI/CrSi-09Che.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CrSi-09Che.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CrSi-09Che.json) |
| CrSi-17Jac.tdb | A. Jacob, E. Povoden-Karadeniz, E. Kozeschnik, Calphad, 56, 80-91(2017). [doi:10.1016/j.calphad.2016.12.002](https://doi.org/10.1016/j.calphad.2016.12.002) | `7f584f9b0c54dd19687d62e32adae35d6320faff47121a14e625fd739d551e0c` | [viewer](https://orchid-project.org/phase-diagrams/#CR-SI/CrSi-17Jac.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CrSi-17Jac.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CrSi-17Jac.json) |
| CrSi-24Ior.tdb | K. Ioroi, I. Ohnuma, X. Xu, R. Kainuma, T. Onori, Calphad, 85, 102690(2024). [doi:10.1016/j.calphad.2024.102690](https://doi.org/10.1016/j.calphad.2024.102690) | `a0d10c9b7b37a8b7d59035037608ec2a1b992d4ea9c2fc3cf8f0891472c51b5d` | [viewer](https://orchid-project.org/phase-diagrams/#CR-SI/CrSi-24Ior.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CrSi-24Ior.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CrSi-24Ior.json) |
| CrSi-94Cou-LB.tdb | C.A. Coughanowr, I. Ansara, H.L. Lukas, Calphad, 18, 125-40(1994). [doi:10.1016/0364-5916(94)90023-X](https://doi.org/10.1016/0364-5916%2894%2990023-X) | `9d9dab51b6eeb64c99fbcb78621bc2e90184f54a970a84d6c9cf5763ae77f116` | [viewer](https://orchid-project.org/phase-diagrams/#CR-SI/CrSi-94Cou-LB.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CrSi-94Cou-LB.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CrSi-94Cou-LB.json) |
| CrSi-95Lee.tdb | B.-J. Lee, unpublished, 1993-95. | `e32530eafb6d302a2aa1e06af486817e4d3b09ae87044bc35eccecd8080022e3` | [viewer](https://orchid-project.org/phase-diagrams/#CR-SI/CrSi-95Lee.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CrSi-95Lee.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CrSi-95Lee.json) |
| CrSi-99Lee.tdb | B.-J. Lee, unpublished, 1999. | `a5a23c0015c48cbb788f782aad8727a34eb81d92a76e7aa59edb0a4dc3528189` | [viewer](https://orchid-project.org/phase-diagrams/#CR-SI/CrSi-99Lee.json) · [TDB](https://orchid-project.org/data/databases/sgte-binary/CrSi-99Lee.tdb) · [JSON](https://data.orchid-project.org/phase-diagrams/sgte/CrSi-99Lee.json) |

Table: Calculated three-phase invariants (model, mole fraction of the second component)

| TDB file | T (K) | Phases at the invariant |
|---|---:|---|
| CrSi-00Du.tdb | 1974.26 | BCC_A2 (x(Si) 0.13027) + LIQUID (x(Si) 0.16409) + CR3SI_A15 (x(Si) 0.23336) |
| CrSi-00Du.tdb | 1937.13 | CR3SI_A15 (x(Si) 0.25261) + LIQUID (x(Si) 0.35485) + M5SI3_D88 (x(Si) 0.36976) |
| CrSi-00Du.tdb | 1791.74 | M5SI3_D88 (x(Si) 0.37485) + CR5SI3_D8M (x(Si) 0.375) + LIQUID (x(Si) 0.50908) |
| CrSi-00Du.tdb | 1761.07 | CR3SI_A15 (x(Si) 0.25132) + M5SI3_D88 (x(Si) 0.37193) + CR5SI3_D8M (x(Si) 0.375) |
| CrSi-00Du.tdb | 1697.24 | CR5SI3_D8M (x(Si) 0.375) + MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.55335) |
| CrSi-00Du.tdb | 1697.23 | CR5SI3_D8M (x(Si) 0.375) + MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.55391) |
| CrSi-00Du.tdb | 1680.7 | MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.57781) + CRSI2_C40 (x(Si) 0.66285) |
| CrSi-00Du.tdb | 1680.7 | MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.57773) + CRSI2_C40 (x(Si) 0.66284) |
| CrSi-00Du.tdb | 1600.68 | CRSI2_C40 (x(Si) 0.67863) + LIQUID (x(Si) 0.85399) + DIAMOND_A4 (x(Si) 1) |
| CrSi-09Che.tdb | 1971.67 | BCC_A2 (x(Si) 0.13249) + LIQUID (x(Si) 0.17017) + CR3SI_A15 (x(Si) 0.2449) |
| CrSi-09Che.tdb | 1932.22 | CR3SI_A15 (x(Si) 0.28925) + M5SI3_D88 (x(Si) 0.37089) + LIQUID (x(Si) 0.38256) |
| CrSi-09Che.tdb | 1781.97 | M5SI3_D88 (x(Si) 0.3747) + CR5SI3_D8M (x(Si) 0.375) + LIQUID (x(Si) 0.50375) |
| CrSi-09Che.tdb | 1774.21 | CR3SI_A15 (x(Si) 0.28565) + M5SI3_D88 (x(Si) 0.3728) + CR5SI3_D8M (x(Si) 0.375) |
| CrSi-09Che.tdb | 1697.93 | CR5SI3_D8M (x(Si) 0.375) + MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.546) |
| CrSi-09Che.tdb | 1697.92 | CR5SI3_D8M (x(Si) 0.375) + MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.54659) |
| CrSi-09Che.tdb | 1680.06 | MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.57543) + CRSI2_C40 (x(Si) 0.66227) |
| CrSi-09Che.tdb | 1680.06 | MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.57533) + CRSI2_C40 (x(Si) 0.66227) |
| CrSi-09Che.tdb | 1596.05 | CRSI2_C40 (x(Si) 0.6787) + LIQUID (x(Si) 0.85362) + DIAMOND_A4 (x(Si) 1) |
| CrSi-17Jac.tdb | 1971.67 | BCC_A2 (x(Si) 0.13249) + LIQUID (x(Si) 0.17017) + CR3SI_A15 (x(Si) 0.2449) |
| CrSi-17Jac.tdb | 1933.84 | CR3SI_A15 (x(Si) 0.28898) + M5SI3_D8M (x(Si) 0.3712) + LIQUID (x(Si) 0.38164) |
| CrSi-17Jac.tdb | 1692.57 | M5SI3_D8M (x(Si) 0.37494) + MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.55668) |
| CrSi-17Jac.tdb | 1680.06 | MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.57543) + MSI2_C40 (x(Si) 0.66227) |
| CrSi-17Jac.tdb | 1680.06 | MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.57533) + MSI2_C40 (x(Si) 0.66227) |
| CrSi-17Jac.tdb | 1596.05 | MSI2_C40 (x(Si) 0.6787) + LIQUID (x(Si) 0.85362) + DIAMOND_A4 (x(Si) 1) |
| CrSi-24Ior.tdb | 1993.43 | BCC_A2 (x(Si) 0.10596) + LIQUID (x(Si) 0.14886) + CR3SI_A15 (x(Si) 0.20616) |
| CrSi-24Ior.tdb | 1943.43 | CR3SI_A15 (x(Si) 0.24848) + LIQUID (x(Si) 0.34999) + CR5SI3_D8M (x(Si) 0.38112) |
| CrSi-24Ior.tdb | 1711.52 | CR5SI3_D8M (x(Si) 0.40259) + MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.54743) |
| CrSi-24Ior.tdb | 1685.15 | MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.57814) + MSI2_C40 (x(Si) 0.66667) |
| CrSi-24Ior.tdb | 1685.15 | MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.5779) + MSI2_C40 (x(Si) 0.66667) |
| CrSi-24Ior.tdb | 1608.57 | MSI2_C40 (x(Si) 0.66667) + LIQUID (x(Si) 0.84527) + DIAMOND_A4 (x(Si) 1) |
| CrSi-24Ior.tdb | 1608.57 | MSI2_C40 (x(Si) 0.66667) + LIQUID (x(Si) 0.84532) + DIAMOND_A4 (x(Si) 1) |
| CrSi-94Cou-LB.tdb | 1957.46 | BCC_A2 (x(Si) 0.11494) + LIQUID (x(Si) 0.15386) + CR3SI_A15 (x(Si) 0.2334) |
| CrSi-94Cou-LB.tdb | 1949.99 | CR3SI_A15 (x(Si) 0.27166) + LIQUID (x(Si) 0.36363) + CR5SI3_D8M (x(Si) 0.375) |
| CrSi-94Cou-LB.tdb | 1718.54 | CR5SI3_D8M (x(Si) 0.375) + MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.55984) |
| CrSi-94Cou-LB.tdb | 1718.54 | CR5SI3_D8M (x(Si) 0.375) + MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.55953) |
| CrSi-94Cou-LB.tdb | 1708.85 | MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.57398) + CRSI2_C40 (x(Si) 0.65571) |
| CrSi-94Cou-LB.tdb | 1708.85 | MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.57356) + CRSI2_C40 (x(Si) 0.65565) |
| CrSi-94Cou-LB.tdb | 1606.66 | CRSI2_C40 (x(Si) 0.67259) + LIQUID (x(Si) 0.86441) + DIAMOND_A4 (x(Si) 1) |
| CrSi-95Lee.tdb | 1971.34 | BCC_A2 (x(Si) 0.0925) + LIQUID (x(Si) 0.15088) + CR3SI_A15 (x(Si) 0.21427) |
| CrSi-95Lee.tdb | 1958.19 | CR3SI_A15 (x(Si) 0.25092) + LIQUID (x(Si) 0.33842) + CR5SI3_D8M (x(Si) 0.375) |
| CrSi-95Lee.tdb | 1740.66 | CR5SI3_D8M (x(Si) 0.375) + MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.53181) |
| CrSi-95Lee.tdb | 1740.65 | CR5SI3_D8M (x(Si) 0.375) + MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.53222) |
| CrSi-95Lee.tdb | 1710.21 | MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.57434) + CRSI2_C40 (x(Si) 0.66233) |
| CrSi-95Lee.tdb | 1710.21 | MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.57401) + CRSI2_C40 (x(Si) 0.66231) |
| CrSi-95Lee.tdb | 1629.9 | CRSI2_C40 (x(Si) 0.67195) + LIQUID (x(Si) 0.86562) + DIAMOND_A4 (x(Si) 1) |
| CrSi-99Lee.tdb | 1977.87 | BCC_A2 (x(Si) 0.09068) + LIQUID (x(Si) 0.14815) + CR3SI_A15 (x(Si) 0.22128) |
| CrSi-99Lee.tdb | 1910.13 | CR3SI_A15 (x(Si) 0.25291) + LIQUID (x(Si) 0.36999) + CR5SI3_D8M (x(Si) 0.375) |
| CrSi-99Lee.tdb | 1665.16 | CR5SI3_D8M (x(Si) 0.375) + MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.54281) |
| CrSi-99Lee.tdb | 1665.15 | CR5SI3_D8M (x(Si) 0.375) + MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.5432) |
| CrSi-99Lee.tdb | 1656.02 | MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.55732) + CRSI2_C40 (x(Si) 0.65813) |
| CrSi-99Lee.tdb | 1656.02 | MSI_B20 (x(Si) 0.5) + LIQUID (x(Si) 0.55723) + CRSI2_C40 (x(Si) 0.65812) |
| CrSi-99Lee.tdb | 1615.99 | CRSI2_C40 (x(Si) 0.67281) + LIQUID (x(Si) 0.84259) + DIAMOND_A4 (x(Si) 1) |

Convex hulls: [Materials Project DFT hull](https://data.orchid-project.org/hulls/dft-mp/CR/CR-SI.json) · [OQMD DFT hull](https://data.orchid-project.org/hulls/dft-oqmd/CR/CR-SI.json) · [CALPHAD hull CrSi-00Du](https://data.orchid-project.org/hulls/calphad-sgte/CR/CR-SI--CrSi-00Du.json) · [CALPHAD hull CrSi-09Che](https://data.orchid-project.org/hulls/calphad-sgte/CR/CR-SI--CrSi-09Che.json) · [CALPHAD hull CrSi-17Jac](https://data.orchid-project.org/hulls/calphad-sgte/CR/CR-SI--CrSi-17Jac.json) · [CALPHAD hull CrSi-94Cou-LB](https://data.orchid-project.org/hulls/calphad-sgte/CR/CR-SI--CrSi-94Cou-LB.json) · [CALPHAD hull CrSi-95Lee](https://data.orchid-project.org/hulls/calphad-sgte/CR/CR-SI--CrSi-95Lee.json) · [CALPHAD hull CrSi-99Lee](https://data.orchid-project.org/hulls/calphad-sgte/CR/CR-SI--CrSi-99Lee.json)

## Invariant reactions (literature)

Table: Invariant reactions reported in the literature for the Cr–Si system (52)

| T (K) | Reaction / phases | Compositions (mole fraction) | Class | Source | Location | Quote |
|---:|---|---|---|---|---|---|
| 2049.5 | congruent melting: Cr3Si-A15 -> Liquid | Cr3Si-A15: Si 0.025; L: Si 0.025 | model | [1] (ed.) 1998 | Table I, p. 167, row 6; `ORC-JPOCJJHAFS` |  |
| 1982.15 | L ↔ (Cr) + Cr3Si | Cr3Si: Si 0.25 | experimental | [2] Du 2000; _cites Chang 1968_ | Table 1, p. 2, row 1; `ORC-2Y6V6HSWBZ` |  |
| 1982.15 | eutectic: L -> Cr3Si + (Cr) | Cr3Si: Si 0.25 | unspecified | [2] Du 2000 | Table 2, p. 2, row 16; `ORC-AZB6KVFGEL` |  |
| 1978.15 | eutectic: L -> Cr3Si + (Cr) | Cr3Si: Si 0.25 | experimental | [2] Du 2000; _cites Chang 1968_ | Table 2, p. 2, row 17; `ORC-DGRDIVVXBV` |  |
| 1974.15 | L ↔ (Cr) + Cr3Si | Cr3Si: Si 0.25 | unspecified | [2] Du 2000 | Table 1, p. 2, row 3; `ORC-ZPS2FJ7MGN` |  |
| 1973.15 | L ↔ (Cr) + Cr3Si | Cr3Si: Si 0.25 | experimental | [2] Du 2000; _cites Svechnikov 1964_ | Table 1, p. 2, row 2; `ORC-LHKWMDIY6M` |  |
| 1971.67 | Liquid = (Cr) + Cr3Si | L: Si 0.1702; (Cr): Si 0.1325; Cr3Si: Si 0.2449 | model | [3] Chen 2009 | Table 2, p. 3, row 1; `ORC-RL7NQ3Q4OS` |  |
| 1957.4 | eutectic: Liquid -> bcc-A2 + Cr3Si-A15 | L: Si 0.154; bcc-A2: Si 0.115; Cr3Si-A15: Si 0.233 | model | [1] (ed.) 1998 | Table I, p. 167, row 1; `ORC-OED3ZXJJOZ` |  |
| 1957.15 | L ↔ (Cr) + Cr3Si | Cr3Si: Si 0.25 | model | [2] Du 2000; _cites Coughanowr 1994_ [doi](https://doi.org/10.1016/0364-5916%2894%2990023-x) | Table 1, p. 2, row 4; `ORC-243SGRSWMD` |  |
| 1953.15 | L ↔ Cr3Si + βCr5Si3 | Cr3Si: Si 0.25; βCr5Si3: Si 0.375 | experimental | [2] Du 2000; _cites Svechnikov 1964_ | Table 1, p. 2, row 10; `ORC-XNHJBMVJPX` |  |
| 1951 | congruent melting: Cr5Si3 -> Liquid | Cr5Si3: Si 0.375; L: Si 0.375 | model | [1] (ed.) 1998 | Table I, p. 167, row 7; `ORC-AEMLBKG62Z` |  |
| 1950.15 | L ↔ Cr3Si + βCr5Si3 | Cr3Si: Si 0.25; βCr5Si3: Si 0.375 | model | [2] Du 2000; _cites Coughanowr 1994_ [doi](https://doi.org/10.1016/0364-5916%2894%2990023-x) | Table 1, p. 2, row 12; `ORC-ONTQCID6ZB` |  |
| 1950 | eutectic: Liquid -> Cr3Si-A15 + Cr5Si3 | L: Si 0.364; Cr3Si-A15: Si 0.272; Cr5Si3: Si 0.375 | model | [1] (ed.) 1998 | Table I, p. 167, row 2; `ORC-5YWNPINRGU` |  |
| 1937.15 | L ↔ Cr3Si + βCr5Si3 | Cr3Si: Si 0.25; βCr5Si3: Si 0.375 | experimental | [2] Du 2000; _cites Chang 1968_ | Table 1, p. 2, row 9; `ORC-JNTKNGBLY6` |  |
| 1937.15 | L ↔ Cr3Si + βCr5Si3 | Cr3Si: Si 0.25; βCr5Si3: Si 0.375 | unspecified | [2] Du 2000 | Table 1, p. 2, row 11; `ORC-OJO5XSNBX6` |  |
| 1937.15 | eutectic: L -> βCr5Si3 + Cr3Si | βCr5Si3: Si 0.375; Cr3Si: Si 0.25 | unspecified | [2] Du 2000 | Table 2, p. 2, row 12; `ORC-QG6TLLDVHX` |  |
| 1933.15 | eutectic: L -> βCr5Si3 + Cr3Si | βCr5Si3: Si 0.375; Cr3Si: Si 0.25 | experimental | [2] Du 2000; _cites Chang 1968_ | Table 2, p. 2, row 13; `ORC-LQIGM6HYAW` |  |
| 1932.22 | Liquid + Cr3Si = βCr5Si3 | L: Si 0.3826; Cr3Si: Si 0.2893; βCr5Si3: Si 0.3709 | model | [3] Chen 2009 | Table 2, p. 3, row 2; `ORC-LRK4I5LR5B` |  |
| 1792.15 | L + βCr5Si3 ↔ αCr5Si3 | βCr5Si3: Si 0.375; αCr5Si3: Si 0.375 | unspecified | [2] Du 2000 | Table 1, p. 2, row 18; `ORC-6QFUXOA4FE` |  |
| 1781.97 | Liquid + βCr5Si3 = αCr5Si3 | L: Si 0.5038; βCr5Si3: Si 0.3747; αCr5Si3: Si 0.375 | model | [3] Chen 2009 | Table 2, p. 3, row 4; `ORC-HPCK3FMNVI` |  |
| 1778.15 | βCr5Si3 ↔ αCr5Si3 + Cr3Si | βCr5Si3: Si 0.375; αCr5Si3: Si 0.375; Cr3Si: Si 0.25 | experimental | [2] Du 2000; _cites Chang 1968_ | Table 1, p. 2, row 19; `ORC-5SSTT2DRVK` |  |
| 1778.15 | L + βCr5Si3 ↔ αCr5Si3 | βCr5Si3: Si 0.375; αCr5Si3: Si 0.375 | experimental | [2] Du 2000; _cites Chang 1968_ | Table 1, p. 2, row 17; `ORC-HMMGJSBKEV` |  |
| 1774.21 | βCr5Si3 = αCr5Si3 + Cr3Si | βCr5Si3: Si 0.3728; αCr5Si3: Si 0.375; Cr3Si: Si 0.2857 | model | [3] Chen 2009 | Table 2, p. 3, row 3; `ORC-RBU4JQJF4F` |  |
| 1761.15 | βCr5Si3 ↔ αCr5Si3 + Cr3Si | βCr5Si3: Si 0.375; αCr5Si3: Si 0.375; Cr3Si: Si 0.25 | unspecified | [2] Du 2000 | Table 1, p. 2, row 20; `ORC-64HUCYAKCD` |  |
| 1741 | congruent melting: Cr2Si -> Liquid | Cr2Si: Si 0.666; L: Si 0.666 | model | [1] (ed.) 1998 | Table I, p. 167, row 8; `ORC-5T464PB6LZ` |  |
| 1718.5 | peritectic: Liquid + Cr5Si3 -> CrSi | L: Si 0.56; Cr5Si3: Si 0.375; CrSi: Si 0.5 | model | [1] (ed.) 1998 | Table I, p. 167, row 3; `ORC-KEKKIVUOMV` |  |
| 1718.15 | L + αCr5Si3 ↔ CrSi | αCr5Si3: Si 0.375; CrSi: Si 0.5 | model | [2] Du 2000; _cites Coughanowr 1994_ [doi](https://doi.org/10.1016/0364-5916%2894%2990023-x) | Table 1, p. 2, row 25; `ORC-74IBPHKKTC` |  |
| 1709.15 | L ↔ CrSi + CrSi2 | CrSi: Si 0.5; CrSi2: Si 0.666667 | model | [2] Du 2000; _cites Coughanowr 1994_ [doi](https://doi.org/10.1016/0364-5916%2894%2990023-x) | Table 1, p. 2, row 30; `ORC-KMWVWZLKXN` |  |
| 1708.8 | eutectic: Liquid -> CrSi + CrSi2 | L: Si 0.574; CrSi: Si 0.5; CrSi2: Si 0.656 | model | [1] (ed.) 1998 | Table I, p. 167, row 4; `ORC-HSSJWBU623` |  |
| 1705.15 | L + αCr5Si3 ↔ CrSi | αCr5Si3: Si 0.375; CrSi: Si 0.5 | experimental | [2] Du 2000; _cites Chang 1968_ | Table 1, p. 2, row 21; `ORC-RWHYKYEVWP` |  |
| 1705.15 | L + αCr5Si3 -> CrSi | αCr5Si3: Si 0.375; CrSi: Si 0.5 | unspecified | [2] Du 2000 | Table 2, p. 2, row 8; `ORC-WZLNK5EOGJ` |  |
| 1702.15 | L + αCr5Si3 ↔ CrSi | αCr5Si3: Si 0.375; CrSi: Si 0.5 | experimental | [2] Du 2000; _cites Svechnikov 1964_ | Table 1, p. 2, row 22; `ORC-SRWR3EV5E3` |  |
| 1698.15 | L + αCr5Si3 ↔ CrSi | αCr5Si3: Si 0.375; CrSi: Si 0.5 | experimental | [2] Du 2000 | Table 1, p. 2, row 23; `ORC-F34442SR7U` |  |
| 1697.92 | Liquid + αCr5Si3 = CrSi | L: Si 0.5466; αCr5Si3: Si 0.375; CrSi: Si 0.5 | model | [3] Chen 2009 | Table 2, p. 3, row 7; `ORC-DUX6ZEJVOB` |  |
| 1697.15 | L + αCr5Si3 ↔ CrSi | αCr5Si3: Si 0.375; CrSi: Si 0.5 | unspecified | [2] Du 2000 | Table 1, p. 2, row 24; `ORC-CWUKYF63ZX` |  |
| 1686.15 | L + αCr5Si3 -> CrSi | αCr5Si3: Si 0.375; CrSi: Si 0.5 | experimental | [2] Du 2000; _cites Chang 1968_ | Table 2, p. 2, row 9; `ORC-6TPFIBSFJP` |  |
| 1682.15 | L ↔ CrSi + CrSi2 | CrSi: Si 0.5; CrSi2: Si 0.666667 | experimental | [2] Du 2000; _cites Svechnikov 1964_ | Table 1, p. 2, row 27; `ORC-WB5SC5BXMN` |  |
| 1681.15 | L ↔ CrSi + CrSi2 | CrSi: Si 0.5; CrSi2: Si 0.666667 | unspecified | [2] Du 2000 | Table 1, p. 2, row 29; `ORC-UI4DVRFRNN` |  |
| 1680.07 | Liquid = CrSi + CrSi2 | L: Si 0.5754; CrSi: Si 0.5; CrSi2: Si 0.6623 | model | [3] Chen 2009 | Table 2, p. 3, row 6; `ORC-JZH5DKR46G` |  |
| 1677.15 | L ↔ CrSi + CrSi2 | CrSi: Si 0.5; CrSi2: Si 0.666667 | experimental | [2] Du 2000 | Table 1, p. 2, row 28; `ORC-2XTPSOZQST` |  |
| 1675.15 | L ↔ CrSi + CrSi2 | CrSi: Si 0.5; CrSi2: Si 0.666667 | experimental | [2] Du 2000; _cites Chang 1968_ | Table 1, p. 2, row 26; `ORC-LXH5H6EG77` |  |
| 1675.15 | eutectic: L -> CrSi2 + CrSi | CrSi2: Si 0.666667; CrSi: Si 0.5 | unspecified | [2] Du 2000 | Table 2, p. 2, row 6; `ORC-SYHB45X7TP` |  |
| 1663.15 | eutectic: L -> CrSi2 + CrSi | CrSi2: Si 0.666667; CrSi: Si 0.5 | experimental | [2] Du 2000; _cites Chang 1968_ | Table 2, p. 2, row 7; `ORC-KQO7HHNVAQ` |  |
| 1607.15 | L ↔ (Si) + CrSi2 | (Si): Si 1; CrSi2: Si 0.666667 | model | [2] Du 2000; _cites Coughanowr 1994_ [doi](https://doi.org/10.1016/0364-5916%2894%2990023-x) | Table 1, p. 2, row 40; `ORC-R25LQPA4EZ` |  |
| 1606.7 | eutectic: Liquid -> CrSi2 + diamond | L: Si 0.864; CrSi2: Si 0.673; diamond: Si 1 | model | [1] (ed.) 1998 | Table I, p. 167, row 5; `ORC-SOJBCNJ2UT` |  |
| 1601.15 | L ↔ (Si) + CrSi2 | (Si): Si 1; CrSi2: Si 0.666667 | unspecified | [2] Du 2000 | Table 1, p. 2, row 39; `ORC-OM3EEMJR34.7a1cb6` |  |
| 1601.15 | L ↔ (Si) + CrSi2 | (Si): Si 1; CrSi2: Si 0.666667 | experimental | [2] Du 2000 | Table 1, p. 2, row 38; `ORC-OM3EEMJR34.ebffb2` |  |
| 1596.05 | Liquid = CrSi2 + (Si) | L: Si 0.8536; CrSi2: Si 0.6787; (Si): Si 1 | model | [3] Chen 2009 | Table 2, p. 3, row 5; `ORC-ABINRUXYXE` |  |
| 1582.15 | L ↔ (Si) + CrSi2 | (Si): Si 1; CrSi2: Si 0.666667 | experimental | [2] Du 2000; _cites Svechnikov 1964_ | Table 1, p. 2, row 37; `ORC-OWSOAHR6KH` |  |
| 1581.15 | L ↔ (Si) + CrSi2 | (Si): Si 1; CrSi2: Si 0.666667 | experimental | [2] Du 2000; _cites Chang 1968_ | Table 1, p. 2, row 36; `ORC-HA5QHHC27N` |  |
| 1581.15 | eutectic: L -> (Si) + CrSi2 | (Si): Si 1; CrSi2: Si 0.666667 | unspecified | [2] Du 2000 | Table 2, p. 2, row 1; `ORC-QWWB5N2GT3` |  |
| 1578.15 | eutectic: L -> (Si) + CrSi2 | (Si): Si 1; CrSi2: Si 0.666667 | experimental | [2] Du 2000; _cites Chang 1968_ | Table 2, p. 2, row 2; `ORC-3Z4ZRYUGUH` |  |

## Formation enthalpies

Literature values in kJ/mol-atom where the per-atom basis is known. DFT columns: the lowest-energy entry at the same composition (Materials Project 2026.04.13, OQMD v1.8; different energy references, never averaged), from [dft_parity.json](https://data.orchid-project.org/literature/dft_parity.json).

Table: Enthalpies of formation, Cr–Si system (29)

| Phase | Compound | Value | T (K) | Class | MP DFT (kJ/mol-atom) | OQMD DFT (kJ/mol-atom) | Source | Location | Quote |
|---|---|---:|---:|---|---:|---:|---|---|---|
| Cr3Si | [Cr3Si](https://data.orchid-project.org/compounds/Cr3Si.html) | -34.7 kJ/mol-atom | 298.15 | experimental | -31.155 (mp-aaaaabcb) | -34.888 (oqmd-3600) | [4] Coughanowr 1994; _cites ref. 61Gol2_ | Table 6, p. 14, row 1; `ORC-4VGP6KA6FZ.bea6ee` |  |
| Cr3Si | [Cr3Si](https://data.orchid-project.org/compounds/Cr3Si.html) | -31.92 kJ/mol-atom |  | model | -31.155 (mp-aaaaabcb) | -34.888 (oqmd-3600) | [4] Coughanowr 1994 | Table 6, p. 14, row 4; `ORC-OJMYUI3CGM.20f9de` |  |
| Cr3Si | [Cr3Si](https://data.orchid-project.org/compounds/Cr3Si.html) | -31.59 kJ/mol-atom |  | model | -31.155 (mp-aaaaabcb) | -34.888 (oqmd-3600) | [4] Coughanowr 1994 | Table 6, p. 14, row 2; `ORC-2TJSNZSCYI.7adcdc` |  |
| Cr3Si |  | -31.59 per mol-atom | 298.15 | model |  |  | [2] Du 2000; _cites Coughanowr 1994_ [doi](https://doi.org/10.1016/0364-5916%2894%2990023-x) | Table 4, p. 4, row 3; `ORC-ICVZMG47GU.67e3a3` |  |
| Cr3Si | [Cr3Si](https://data.orchid-project.org/compounds/Cr3Si.html) | -31.41 kJ/mol-atom |  | model | -31.155 (mp-aaaaabcb) | -34.888 (oqmd-3600) | [4] Coughanowr 1994 | Table 6, p. 14, row 3; `ORC-5JQ4AA5JYJ.573dcf` |  |
| Cr3Si |  | -28.749 per mol-atom | 298.15 | model |  |  | [2] Du 2000 | Table 4, p. 4, row 2; `ORC-RPMR2KMO55.f4eb8f` |  |
| Cr3Si |  | -27.2 per mol-atom ± 1100 | 298.15 | experimental |  |  | [2] Du 2000; _cites Meschel 1998_ [doi](https://doi.org/10.1016/s0925-8388%2897%2900528-8) | Table 4, p. 4, row 1; `ORC-5PUOEX2QZD.cd2c56` |  |
| Cr5Si3 | [Cr5Si3](https://data.orchid-project.org/compounds/Cr5Si3.html) | -41 kJ/mol-atom | 298.15 | experimental | -27.079 (mp-aaaaalcs) | -29.969 (oqmd-3178) | [4] Coughanowr 1994; _cites ref. 61Gol2_ | Table 6, p. 14, row 5; `ORC-GMA4XV7L4M.3cc978` |  |
| Cr5Si3 | [Cr5Si3](https://data.orchid-project.org/compounds/Cr5Si3.html) | -32.9 kJ/mol-atom |  | model | -27.079 (mp-aaaaalcs) | -29.969 (oqmd-3178) | [4] Coughanowr 1994 | Table 6, p. 14, row 8; `ORC-6DVBEI2V2B.8033a6` |  |
| Cr5Si3 | [Cr5Si3](https://data.orchid-project.org/compounds/Cr5Si3.html) | -32.57 kJ/mol-atom |  | model | -27.079 (mp-aaaaalcs) | -29.969 (oqmd-3178) | [4] Coughanowr 1994 | Table 6, p. 14, row 6; `ORC-I6VUO3QXGV.a545db` |  |
| Cr5Si3 | [Cr5Si3](https://data.orchid-project.org/compounds/Cr5Si3.html) | -32.52 kJ/mol-atom |  | model | -27.079 (mp-aaaaalcs) | -29.969 (oqmd-3178) | [4] Coughanowr 1994 | Table 6, p. 14, row 7; `ORC-M34I2LXSTR.dada96` |  |
| CrSi | [CrSi](https://data.orchid-project.org/compounds/CrSi.html) | -39.7 kJ/mol-atom | 298.15 | experimental | -24.637 (mp-aaaaalfk) | -27.832 (oqmd-3602) | [4] Coughanowr 1994; _cites ref. 61Gol2_ | Table 6, p. 14, row 9; `ORC-CW7FE3TCK7.9b0e0e` |  |
| CrSi |  | -34.2 per mol-atom ± 1600 | 298.15 | experimental |  |  | [2] Du 2000; _cites Meschel 1998_ [doi](https://doi.org/10.1016/s0925-8388%2897%2900528-8) | Table 4, p. 4, row 7; `ORC-RPGFZ7MWTU.5e2ba8` |  |
| CrSi | [CrSi](https://data.orchid-project.org/compounds/CrSi.html) | -30.44 kJ/mol-atom |  | model | -24.637 (mp-aaaaalfk) | -27.832 (oqmd-3602) | [4] Coughanowr 1994 | Table 6, p. 14, row 12; `ORC-SS2DIOXSC7.ec4661` |  |
| CrSi |  | -30.429 per mol-atom | 298.15 | model |  |  | [2] Du 2000 | Table 4, p. 4, row 8; `ORC-HYSJOTOIOU.c45b0b` |  |
| CrSi | [CrSi](https://data.orchid-project.org/compounds/CrSi.html) | -30.18 kJ/mol-atom |  | model | -24.637 (mp-aaaaalfk) | -27.832 (oqmd-3602) | [4] Coughanowr 1994 | Table 6, p. 14, row 11; `ORC-YFHPJPYFR2.4f9eed` |  |
| CrSi |  | -30.16 per mol-atom | 298.15 | model |  |  | [2] Du 2000; _cites Coughanowr 1994_ [doi](https://doi.org/10.1016/0364-5916%2894%2990023-x) | Table 4, p. 4, row 9; `ORC-TC4BQJELU5.3402a9` |  |
| CrSi | [CrSi](https://data.orchid-project.org/compounds/CrSi.html) | -30.16 kJ/mol-atom |  | model | -24.637 (mp-aaaaalfk) | -27.832 (oqmd-3602) | [4] Coughanowr 1994 | Table 6, p. 14, row 10; `ORC-VI4QDH2XML.779674` |  |
| CrSi2 | [CrSi2](https://data.orchid-project.org/compounds/CrSi2.html) | -40.2 kJ/mol-atom | 298.15 | experimental | -31.349 (mp-aaaaanft) | -35.843 (oqmd-12787) | [4] Coughanowr 1994; _cites ref. 61Gol2_ | Table 6, p. 14, row 13; `ORC-SFXQ74N26N.a559ce` |  |
| CrSi2 |  | -27.296 per mol-atom | 298.15 | model |  |  | [2] Du 2000 | Table 4, p. 4, row 11; `ORC-4I52HOG5PC.e4084e` |  |
| CrSi2 | [CrSi2](https://data.orchid-project.org/compounds/CrSi2.html) | -26.1 kJ/mol-atom |  | model | -31.349 (mp-aaaaanft) | -35.843 (oqmd-12787) | [4] Coughanowr 1994 | Table 6, p. 14, row 16; `ORC-AJEDRVSVRA.a1949e` |  |
| CrSi2 | [CrSi2](https://data.orchid-project.org/compounds/CrSi2.html) | -26.09 kJ/mol-atom |  | model | -31.349 (mp-aaaaanft) | -35.843 (oqmd-12787) | [4] Coughanowr 1994 | Table 6, p. 14, row 17; `ORC-EXZPL6NJGR.0afd82` |  |
| CrSi2 | [CrSi2](https://data.orchid-project.org/compounds/CrSi2.html) | -26.08 kJ/mol-atom |  | model | -31.349 (mp-aaaaanft) | -35.843 (oqmd-12787) | [4] Coughanowr 1994 | Table 6, p. 14, row 15; `ORC-6PSZBSK6B4.3489ac` |  |
| CrSi2 |  | -26.08 per mol-atom | 298.15 | model |  |  | [2] Du 2000; _cites Coughanowr 1994_ [doi](https://doi.org/10.1016/0364-5916%2894%2990023-x) | Table 4, p. 4, row 12; `ORC-WT5MIQADSB.06cb7a` |  |
| CrSi2 | [CrSi2](https://data.orchid-project.org/compounds/CrSi2.html) | -25.8 kJ/mol-atom | 298.15 | experimental | -31.349 (mp-aaaaanft) | -35.843 (oqmd-12787) | [4] Coughanowr 1994; _cites ref. 87Top_ | Table 6, p. 14, row 14; `ORC-UAYIRY3KNJ.a55890` |  |
| CrSi2 |  | -25.8 per mol-atom ± 4400 | 298.15 | experimental |  |  | [2] Du 2000; _cites ref. 1987Top_ | Table 4, p. 4, row 10; `ORC-XNP6VSN2VU.b70f2b` |  |
| αCr5Si3 |  | -33.6 per mol-atom ± 1000 | 298.15 | experimental |  |  | [2] Du 2000; _cites Meschel 1998_ [doi](https://doi.org/10.1016/s0925-8388%2897%2900528-8) | Table 4, p. 4, row 4; `ORC-PXHGAHXP25.50c7e9` |  |
| αCr5Si3 |  | -32.57 per mol-atom | 298.15 | model |  |  | [2] Du 2000; _cites Coughanowr 1994_ [doi](https://doi.org/10.1016/0364-5916%2894%2990023-x) | Table 4, p. 4, row 6; `ORC-JUQKCTZRZ6.f8318d` |  |
| αCr5Si3 |  | -32.525 per mol-atom | 298.15 | model |  |  | [2] Du 2000 | Table 4, p. 4, row 5; `ORC-DNJLNZGVNR.134cf5` |  |

## Other properties

### Phase transition (24)

Table: Phase transition, Cr–Si system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Phase transition | 1702.15 K | 1702.15 | L ↔ CrSi2; _L: Si 0.666667; CrSi2: Si 0.666667_ | experimental | [2] Du 2000; _cites Svechnikov 1964_ | Table 1, p. 2, row 32; `ORC-XIPD3YHKNT` |  |
| Phase transition | 1710.15 K | 1710.15 | L -> CrSi2; _L: Si 0.666667; CrSi2: Si 0.666667_ | unspecified | [2] Du 2000 | Table 2, p. 2, row 5; `ORC-FROGHBW7LF` |  |
| Phase transition | 1710.15 K | 1710.15 | L ↔ CrSi2; _L: Si 0.666667; CrSi2: Si 0.666667_ | experimental | [2] Du 2000; _cites Chang 1968_ | Table 1, p. 2, row 31; `ORC-TXVPK7OBCO` |  |
| Phase transition | 1711.15 K | 1711.15 | L -> CrSi2; _L: Si 0.666667; CrSi2: Si 0.666667_ | unspecified | [2] Du 2000 | Table 2, p. 2, row 3; `ORC-OODM676OL6` |  |
| Phase transition | 1711.15 K | 1711.15 | L ↔ CrSi2; _L: Si 0.666667; CrSi2: Si 0.666667_ | experimental | [2] Du 2000 | Table 1, p. 2, row 33; `ORC-XMGHR67PKL` |  |
| Phase transition | 1712.15 K | 1712.15 | L ↔ CrSi2; _L: Si 0.666667; CrSi2: Si 0.666667_ | unspecified | [2] Du 2000 | Table 1, p. 2, row 34; `ORC-TDQBP7ZO4E` |  |
| Phase transition | 1713.75 K | 1713.75 | Liquid = CrSi2; _L: Si 0.6664; CrSi2: Si 0.6664_ | model | [3] Chen 2009 | Table 2, p. 3, row 8; `ORC-3NK4QFYV45` |  |
| Phase transition | 1741.15 K | 1741.15 | L ↔ CrSi2; _L: Si 0.666667; CrSi2: Si 0.666667_ | model | [2] Du 2000; _cites Coughanowr 1994_ [doi](https://doi.org/10.1016/0364-5916%2894%2990023-x) | Table 1, p. 2, row 35; `ORC-QKH6UNNZLB` |  |
| Phase transition | 1763.15 K | 1763.15 | L -> CrSi2; _L: Si 0.666667; CrSi2: Si 0.666667_ | experimental | [2] Du 2000; _cites Chang 1968_ | Table 2, p. 2, row 4; `ORC-3T5AL6WJ4D` |  |
| Phase transition | 1939.15 K | 1939.15 | L ↔ βCr5Si3; _L: Si 0.375; βCr5Si3: Si 0.375_ | unspecified | [2] Du 2000 | Table 1, p. 2, row 15; `ORC-35JTCESLCL` |  |
| Phase transition | 1941.15 K | 1941.15 | L -> βCr5Si3; _L: Si 0.375; βCr5Si3: Si 0.375_ | unspecified | [2] Du 2000 | Table 2, p. 2, row 10; `ORC-FG5SGJAHIK` |  |
| Phase transition | 1941.15 K | 1941.15 (>) | L ↔ βCr5Si3; _L: Si 0.375; βCr5Si3: Si 0.375_ | experimental | [2] Du 2000; _cites Chang 1968_ | Table 1, p. 2, row 13; `ORC-NRY7YL2R4P` |  |
| Phase transition | 1951.15 K | 1951.15 | L ↔ βCr5Si3; _L: Si 0.375; βCr5Si3: Si 0.375_ | model | [2] Du 2000; _cites Coughanowr 1994_ [doi](https://doi.org/10.1016/0364-5916%2894%2990023-x) | Table 1, p. 2, row 16; `ORC-OM2JMM5NB6` |  |
| Phase transition | 1953.15 K | 1953.15 | L -> βCr5Si3; _L: Si 0.375; βCr5Si3: Si 0.375_ | experimental | [2] Du 2000; _cites Chang 1968_ | Table 2, p. 2, row 11; `ORC-JDF4UKYOEJ` |  |
| Phase transition | 1993.15 K | 1993.15 | L ↔ βCr5Si3; _L: Si 0.375; βCr5Si3: Si 0.375_ | experimental | [2] Du 2000; _cites Svechnikov 1964_ | Table 1, p. 2, row 14; `ORC-NHTOYA6TOY` |  |
| Phase transition | 2039.15 K | 2039.15 | L -> Cr3Si; _L: Si 0.25; Cr3Si: Si 0.25_ | unspecified | [2] Du 2000 | Table 2, p. 2, row 14; `ORC-5IVZ4L6CRC` |  |
| Phase transition | 2039.15 K | 2039.15 (>) | L ↔ Cr3Si; _L: Si 0.25; Cr3Si: Si 0.25_ | experimental | [2] Du 2000; _cites Chang 1968_ | Table 1, p. 2, row 5; `ORC-DYBD4TEDKL` |  |
| Phase transition | 2043.15 K | 2043.15 | L -> Cr3Si; _L: Si 0.25; Cr3Si: Si 0.25_ | experimental | [2] Du 2000; _cites Chang 1968_ | Table 2, p. 2, row 15; `ORC-QJKAYGXRDB` |  |
| Phase transition | 2043.15 K | 2043.15 | L ↔ Cr3Si; _L: Si 0.25; Cr3Si: Si 0.25_ | experimental | [2] Du 2000; _cites Svechnikov 1964_ | Table 1, p. 2, row 6; `ORC-5RLRNO4QLT` |  |
| Phase transition | 2047.54 K | 2047.54 | Liquid = Cr3Si; _L: Si 0.2603; Cr3Si: Si 0.2603_ | model | [3] Chen 2009 | Table 2, p. 3, row 9; `ORC-NIDHZ7OKAT` |  |
| Phase transition | 2050.15 K | 2050.15 | L ↔ Cr3Si; _L: Si 0.25; Cr3Si: Si 0.25_ | model | [2] Du 2000; _cites Coughanowr 1994_ [doi](https://doi.org/10.1016/0364-5916%2894%2990023-x) | Table 1, p. 2, row 8; `ORC-MFOUR22QYM` |  |
| Phase transition | 2053.15 K | 2053.15 | L ↔ Cr3Si; _L: Si 0.25; Cr3Si: Si 0.25_ | unspecified | [2] Du 2000 | Table 1, p. 2, row 7; `ORC-TL6BLERJY6` |  |
| Phase transition | 2133.15 K | 2133.15 | Cr + liquid | experimental | [4] Coughanowr 1994; _cites ref. 67Rud_ | p. 2; `ORC-XFTZAU7UKF` | “At the time when Svechnikov et al. and Chang reported their results for the Cr-Si system, a melting temperature of 188W'C (2153 K) had been established for Cr \[58Han, 65Ell\]; Chang used an even lower value, 1860°C (2133 K), determined by Rudy \[67Rud\].” |
| Phase transition | 2180.15 K | 2180.15 | Cr + liquid | model | [4] Coughanowr 1994; _cites ref. 91Din_ | p. 2; `ORC-COTK2TWYFG` | “However, the T, of 1907°C (2180 K) adopted by SGTE ' \[91Din\] and used in the present work is higher by 27-47°C.” |

### Crystal structure (6)

Table: Crystal structure, Cr–Si system

| Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote |
|---|---:|---:|---|---|---|---|---|
| Lattice a | 4.558 Å | 298.15 | Cr3Si; _alloy: Cr 0.75, Si 0.25_ | model | [5] Hu 2013; _cites Gokhale 1987_ [doi](https://doi.org/10.1007/bf02893156) | Table 3, p. 4, row 7; `ORC-W75AN77DHD.487012` |  |
| Lattice a | 4.62 Å | 298.15 | CrSi; _alloy: Cr 0.5, Si 0.5_ | model | [5] Hu 2013; _cites Gokhale 1987_ [doi](https://doi.org/10.1007/bf02893156) | Table 3, p. 4, row 5; `ORC-ROD3SPJBWC.843821` |  |
| Lattice a | 4.428 Å | 298.15 | CrSi2; _alloy: Cr 0.333333, Si 0.666667_ | model | [5] Hu 2013; _cites Gokhale 1987_ [doi](https://doi.org/10.1007/bf02893156) | Table 3, p. 4, row 4; `ORC-HB6BE3YYMM.b19ba0` |  |
| Lattice a | 9.17 Å | 298.15 | αCr5Si3; _alloy: Cr 0.625, Si 0.375_ | model | [5] Hu 2013; _cites Gokhale 1987_ [doi](https://doi.org/10.1007/bf02893156) | Table 3, p. 4, row 6; `ORC-NURPBJFLLY.2f7b06` |  |
| Lattice c | 6.368 Å | 298.15 | CrSi2; _alloy: Cr 0.333333, Si 0.666667_ | model | [5] Hu 2013; _cites Gokhale 1987_ [doi](https://doi.org/10.1007/bf02893156) | Table 3, p. 4, row 4; `ORC-HB6BE3YYMM.567d40` |  |
| Lattice c | 4.636 Å | 298.15 | αCr5Si3; _alloy: Cr 0.625, Si 0.375_ | model | [5] Hu 2013; _cites Gokhale 1987_ [doi](https://doi.org/10.1007/bf02893156) | Table 3, p. 4, row 6; `ORC-NURPBJFLLY.7787a9` |  |

## Sources

Reporting papers the values were read from (a value cited from another work names that work in its row).

1. I. Ansara, A. T. Dinsdale, M. H. Rand (eds.), COST 507: Thermochemical database for light metal alloys, Volume 2, EUR 18499 EN, Office for Official Publications of the European Communities, Luxembourg (1998), ISBN 92-828-3902-8.
2. Yong Du, Julius C. Schuster, Experimental reinvestigation of the CrSi-Si partial system and update of the thermodynamic description of the entire Cr-Si system, JPE 21, 281-286 (2000). [doi:10.1361/105497100770340066](https://doi.org/10.1361/105497100770340066)
3. Hailin Chen, Yong Du, Julius C. Schuster, On the melting of Cr5Si3 and update of the thermodynamic description of Cr–Si, Calphad 33, 211-214 (2009). [doi:10.1016/j.calphad.2008.05.005](https://doi.org/10.1016/j.calphad.2008.05.005)
4. Corinne A. Coughanowr, Ibrahim Ansara, Hans Leo Lukas, Assessment of the CrSi System, Calphad 18, 125-140 (1994). [doi:10.1016/0364-5916(94)90023-x](https://doi.org/10.1016/0364-5916%2894%2990023-x)
5. Biao Hu, Wei-Wei Zhang, Yingbiao Peng, Yong Du, Shuhong Liu, Yuelan Zhang, Thermodynamic reassessment of the Al–Cr–Si system with the refined description of the Al–Cr system, Thermochimica Acta 561, 77-90 (2013). [doi:10.1016/j.tca.2013.03.033](https://doi.org/10.1016/j.tca.2013.03.033)

## Please cite

- R. Arróyave, J. Saal, D. Shin, ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23735569
- R. Arróyave, J. Saal, D. Shin, ORCHID-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). https://doi.org/10.5281/zenodo.23735859
- R. Arróyave, J. Saal, D. Shin, ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD) (version 2026.10), Zenodo (2026). https://doi.org/10.5281/zenodo.23735891
- R. Arróyave, J. Saal, D. Shin, ORCHID data: umbrella record of the ORCHID datasets (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23736065

Also cite the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work); B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, https://doi.org/10.1016/j.calphad.2025.102833 (CC BY 4.0), and the original assessment named in each file; A. Jain et al., The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002, https://doi.org/10.1063/1.4812323 (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501, https://doi.org/10.1007/s11837-013-0755-4 and S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010, https://doi.org/10.1038/npjcompumats.2015.10 (CC BY 4.0).

Version 1, machine-extracted: values were read by language-model readers constrained to quote their source and checked automatically, and the release was then audited on the printed pages by adversarial audits, an independent second review of fit-facing records and a preliminary human review of a frozen sample. Flags such as accepted and ESPEI-ready record screening results, not certification; known issues are listed in the release notes.

```bibtex
@misc{orchid_literature_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735569},
  url       = {https://doi.org/10.5281/zenodo.23735569},
  note      = {Version 1, machine-extracted}
}

@misc{orchid_phase_diagrams_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Diagrams: calculated binary phase diagrams}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735859},
  url       = {https://doi.org/10.5281/zenodo.23735859}
}

@misc{orchid_hulls_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Hulls: binary convex hulls (Materials Project, OQMD, assessed CALPHAD)}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735891},
  url       = {https://doi.org/10.5281/zenodo.23735891}
}

@misc{orchid_data_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID data: umbrella record of the ORCHID datasets}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23736065},
  url       = {https://doi.org/10.5281/zenodo.23736065},
  note      = {Version 1, machine-extracted}
}
```

---

Derived data CC BY 4.0 ([licence](https://creativecommons.org/licenses/by/4.0/)): cite ORCHID ([CITATION.cff](https://data.orchid-project.org/CITATION.cff)) and the original sources. Quotes are short excerpts kept so that each value can be checked; they remain under the publishers' copyright and are not relicensed. Source papers, page images and full text are not redistributed. Field reference: [SCHEMA.md](https://data.orchid-project.org/literature/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt). Found an error? The report link of a value (Markdown: its id, ORC-..., in the Location column) opens a pre-filled GitHub issue, https://github.com/orchid-calphad/orchid-data/issues/new?template=report-value-error.yml&record_id=\<id>, carrying only the record id, source and value; [how to contribute](https://orchid-project.org/contribute/).