Au–Ti system

27 accepted literature values from 1 paper(s) (experimental 9, model 9, unspecified 9); 1 calculated phase diagram(s).

Data: JSON · CSV · interactive explorer · interactive phase diagram · phases (8) · papers (bibliography) · Markdown

Accepted values by evidence class
Evidence class	Values
experimental	9
model	9
unspecified	9

Accepted values by property group
Property group	Values
invariant reaction	24
phase transition	3

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.

Assessments with a calculated phase diagram
TDB file	Assessment	SHA-256	Links
AuTi-01Luo-LB.tdb	W. Luo, Z. Jin, H. Liu, T. Wang, Calphad, 25, 19-26(2001). doi:10.1016/S0364-5916(01)00026-8	`3cb2928079fa6325bae5bc69bce9edb4d561ae14dc729dada765b48d586bd2ea`	viewer · TDB · JSON

Calculated three-phase invariants (model, mole fraction of the second component)
TDB file	T (K)	Phases at the invariant
AuTi-01Luo-LB.tdb	1678.03	AU2TI_C11B (x(Ti) 0.33333) + LIQUID (x(Ti) 0.40857) + AUTI (x(Ti) 0.49038)
AuTi-01Luo-LB.tdb	1639.27	AUTI3_A15 (x(Ti) 0.75) + LIQUID (x(Ti) 0.79434) + BCC_A2 (x(Ti) 0.84497)
AuTi-01Luo-LB.tdb	1639.27	AUTI3_A15 (x(Ti) 0.75) + LIQUID (x(Ti) 0.79441) + BCC_A2 (x(Ti) 0.84504)
AuTi-01Luo-LB.tdb	1604.93	AUTI (x(Ti) 0.61943) + LIQUID (x(Ti) 0.67239) + AUTI3_A15 (x(Ti) 0.75)
AuTi-01Luo-LB.tdb	1443.75	LIQUID (x(Ti) 0.1544) + AU4TI_D1A (x(Ti) 0.19331) + AU2TI_C11B (x(Ti) 0.33333)
AuTi-01Luo-LB.tdb	1443.75	LIQUID (x(Ti) 0.15461) + AU4TI_D1A (x(Ti) 0.19334) + AU2TI_C11B (x(Ti) 0.33333)
AuTi-01Luo-LB.tdb	1394.1	LIQUID (x(Ti) 0.11643) + FCC_A1 (x(Ti) 0.12621) + AU4TI_D1A (x(Ti) 0.1859)
AuTi-01Luo-LB.tdb	1104.89	AUTI3_A15 (x(Ti) 0.75) + BCC_A2 (x(Ti) 0.96506) + HCP_A3 (x(Ti) 0.98233)
AuTi-01Luo-LB.tdb	1104.89	AUTI3_A15 (x(Ti) 0.75) + BCC_A2 (x(Ti) 0.96517) + HCP_A3 (x(Ti) 0.9824)

Convex hulls: Materials Project DFT hull · OQMD DFT hull

Invariant reactions (literature)

Invariant reactions reported in the literature for the Au–Ti system (24)
T (K)	Reaction / phases	Compositions (mole fraction)	Class	Source	Location
1768	congruent melting: L->TiAu	L: Au 0.5; TiAu: Au 0.5, Ti 0.5	experimental	[1] Luo 2001 cites ref. 56Pie	Table 4, p. 7, row 16 report
1760	congruent melting: L->TiAu	L: Au 0.497; TiAu: Au 0.5, Ti 0.5	model	[1] Luo 2001	Table 4, p. 7, row 15 report
1728	congruent melting: L->TiAu2	L: Au 0.6667; TiAu2: Au 0.666667, Ti 0.333333	experimental	[1] Luo 2001 cites ref. 56Pie	Table 4, p. 7, row 18 report
1717	congruent melting: L->TiAu2	L: Au 0.6667; TiAu2: Au 0.666667, Ti 0.333333	model	[1] Luo 2001	Table 4, p. 7, row 17 report
1677	eutectic: L->TiAu+TiAu2	L: Au 0.5921; TiAu: Au 0.5, Ti 0.5; TiAu2: Au 0.666667, Ti 0.333333	model	[1] Luo 2001	Table 4, p. 7, row 7 report
1668	congruent melting: L->Ti3Au	L: Au 0.25; Ti3Au: Au 0.25, Ti 0.75	experimental	[1] Luo 2001 cites ref. 56Pie	Table 4, p. 7, row 14 report
1658.15	eutectic: L->TiAu+TiAu2	L: Ti 0.4; TiAu: Ti 0.48; TiAu2: Ti 0.333	unspecified	[1] Luo 2001	Table 1, p. 2, row 4 report
1658	eutectic: L->TiAu+TiAu2	L: Au 0.6; TiAu: Au 0.5, Ti 0.5; TiAu2: Au 0.666667, Ti 0.333333	experimental	[1] Luo 2001 cites ref. 56Pie	Table 4, p. 7, row 8 report
1655	congruent melting: L->Ti3Au	L: Au 0.25; Ti3Au: Au 0.25, Ti 0.75	model	[1] Luo 2001	Table 4, p. 7, row 13 report
1640.15	eutectic: L->(βTi)+Ti3Au	L: Ti 0.79; (βTi): Ti 0.85; Ti3Au: Ti 0.75	unspecified	[1] Luo 2001	Table 1, p. 2, row 1 report
1640	eutectic: L->(βTi)+Ti3Au	L: Au 0.21; Ti3Au: Au 0.25, Ti 0.75	experimental	[1] Luo 2001 cites ref. 56Pie	Table 4, p. 7, row 2 report
1637	eutectic: L->(βTi)+Ti3Au	L: Au 0.2047; Ti3Au: Au 0.25, Ti 0.75	model	[1] Luo 2001	Table 4, p. 7, row 1 report
1597	eutectic: L->Ti3Au+TiAu	L: Au 0.3287; Ti3Au: Au 0.25, Ti 0.75; TiAu: Au 0.5, Ti 0.5	model	[1] Luo 2001	Table 4, p. 7, row 5 report
1583.15	eutectic: L->Ti3Au+TiAu	L: Ti 0.67; Ti3Au: Ti 0.75; TiAu: Ti 0.62	unspecified	[1] Luo 2001	Table 1, p. 2, row 3 report
1583	eutectic: L->Ti3Au+TiAu	L: Au 0.33; Ti3Au: Au 0.25, Ti 0.75; TiAu: Au 0.5, Ti 0.5	experimental	[1] Luo 2001 cites ref. 56Pie	Table 4, p. 7, row 6 report
1445.15	peritectic: TiAu2+L->TiAu4	TiAu2: Ti 0.333; L: Ti 0.141; TiAu4: Ti 0.2	unspecified	[1] Luo 2001	Table 1, p. 2, row 5 report
1445	TiAu2+L->TiAu4	TiAu2: Au 0.666667, Ti 0.333333; L: Au 0.8; TiAu4: Au 0.8, Ti 0.2	experimental	[1] Luo 2001 cites ref. 56Pie	Table 4, p. 7, row 10 report
1443	TiAu2+L->TiAu4	TiAu2: Au 0.666667, Ti 0.333333; L: Au 0.8073; TiAu4: Au 0.8, Ti 0.2	model	[1] Luo 2001	Table 4, p. 7, row 9 report
1396.15	peritectic: TiAu4+L->(Au)	TiAu4: Ti 0.18; L: Ti 0.11; (Au): Ti 0.13	unspecified	[1] Luo 2001	Table 1, p. 2, row 6 report
1396	TiAu4+L->(Au)	TiAu4: Au 0.8, Ti 0.2; L: Au 0.87	experimental	[1] Luo 2001 cites ref. 56Pie	Table 4, p. 7, row 12 report
1395	TiAu4+L->(Au)	TiAu4: Au 0.8, Ti 0.2; L: Au 0.873	model	[1] Luo 2001	Table 4, p. 7, row 11 report
1105.15	eutectoid: (βTi)->(αTi)+Ti3Au	(βTi): Ti 0.958; (αTi): Ti 0.983; Ti3Au: Ti 0.75	unspecified	[1] Luo 2001 cites ref. 78Pli	Table 1, p. 2, row 2 report
1105	(βTi)->(αTi)+Ti3Au	(βTi): Au 0.042; (αTi): Au 0.5, Ti 0.5; Ti3Au: Au 0.25, Ti 0.75	experimental	[1] Luo 2001 cites ref. 56Pie	Table 4, p. 7, row 4 report
1105	(βTi)->(αTi)+Ti3Au	(βTi): Au 0.0378; (αTi): Au 0.5, Ti 0.5; Ti3Au: Au 0.25, Ti 0.75	model	[1] Luo 2001	Table 4, p. 7, row 3 report

Other properties

Phase transition (3)

Phase transition, Au–Ti system
Property	Value	T (K)	Phases / composition	Class	Source	Location
Phase transition	1668.15 K	1668.15	congruent melting: L->Ti3Au L: Ti 0.75; Ti3Au: Ti 0.75	unspecified	[1] Luo 2001	Table 1, p. 2, row 7 report
Phase transition	1728.15 K	1728.15	congruent melting: L->TiAu2 L: Ti 0.333; TiAu2: Ti 0.333	unspecified	[1] Luo 2001	Table 1, p. 2, row 9 report
Phase transition	1768.15 K	1768.15	congruent melting: L->TiAu L: Ti 0.5; TiAu: Ti 0.5	unspecified	[1] Luo 2001	Table 1, p. 2, row 8 report

Sources

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

Weikun Luo, Zhanpeng Jin, Huashan Liu, Tao Wang, Thermodynamic assessment of the Au-Ti system, Calphad 25, 19-26 (2001). doi:10.1016/s0364-5916(01)00026-8

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). doi:10.5281/zenodo.23735569
R. Arróyave, J. Saal, D. Shin, ORCHID-Diagrams: calculated binary phase diagrams (version 2026.10), Zenodo (2026). doi: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). doi: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). doi: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.

@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}
}