Cr–Fe phases

9 phases (tier A 7, liquid 1, needs_review 1); 5 stable in a calculated diagram. Structure types are assigned only when the stored evidence supports an assignment under the stated tier rules (tier A: standard phase name; tier B: unique Materials Project + OQMD on-hull match, DFT-supported; tier C: one structure stated by the assessment's crystallographic table, assessor-stated); other phases list candidates and are marked needs_review. Stability is from phase diagrams calculated with pycalphad from the SGTE binary collection (evidence class: model).

Data: interactive registry · full JSON · Cr–Fe system page · Markdown · field reference

Phases of the Cr–Fe system (9)
Phase	Structure	Basis	Stability (calculated)	Literature values	TDB models
CHI_A12 phase:cr-fe:a12-chi	alpha-Mn · A12 · cI58 · I-43m (217)	tier A: standard phase name	not stable in 1 calculated diagram(s)	0	1
BCC_A2 phase:cr-fe:bcc-a2	W · A2 · cI2 · Im-3m (229)	tier A: standard phase name	stable in 7 of 7 calculated diagram(s): 300–2180.98 K, x(Fe) 0–1	10	7
C14_LAVES phase:cr-fe:c14-laves	MgZn2 · C14 · hP12 · P6_3/mmc (194)	tier A: standard phase name	not stable in 1 calculated diagram(s)	0	1
SIGMA_D8B phase:cr-fe:d8b-sigma	sigma-CrFe · D8_b · tP30 · P4_2/mnm (136)	tier A: standard phase name	stable in 7 of 7 calculated diagram(s): 704.29–1104.5 K, x(Fe) 0.48378–0.57894	41	7
FCC_A1 phase:cr-fe:fcc-a1	Cu · A1 · cF4 · Fm-3m (225)	tier A: standard phase name	stable in 6 of 7 calculated diagram(s): 1117.16–1671.06 K, x(Fe) 0.87767–1	2	7
HCP_A3 phase:cr-fe:hcp-a3	Mg · A3 · hP2 · P6_3/mmc (194)	tier A: standard phase name	not stable in 6 calculated diagram(s)	0	6
HIGH_SIGMA phase:cr-fe:high-sigma		needs_review	not stable in 1 calculated diagram(s)	0	1
LIQUID phase:cr-fe:liquid	liquid	liquid	stable in 7 of 7 calculated diagram(s): 1782.96–4000 K, x(Fe) 0–1	3	7
SIGMA_OLD phase:cr-fe:old-sigma	sigma-CrFe · D8_b · tP30 · P4_2/mnm (136)	tier A: standard phase name	stable in 1 of 1 calculated diagram(s): 786.21–1104.5 K, x(Fe) 0.48601–0.56338	0	1

CHI_A12 (Cr–Fe)

Id: phase:cr-fe:a12-chi; status assigned
Structure: alpha-Mn · A12 · cI58 · I-43m (217); type st:a12-alpha-mn-ci58; tier A: standard phase name; confidence high
Stability: not stable in 1 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:cr-fe:a12-chi
tdb: tdb:CrFe-87And-LB.tdb:CHI_A12

TDB models of CHI_A12 (1): PHASE and CONSTITUENT statements as written

CrFe-87And-LB.tdb: CHI_A12, type code %, sha256 aee44c07511fe31f…

61: PHASE CHI_A12 % 3 24 10 24 !
62: CONST CHI_A12 : CR FE : CR : CR FE : !

Example references (1 of 1; assessments first):

doi:10.1016/0364-5916(87)90021-6 Jan-Olof Andersson, Bo Sundman, Thermodynamic properties of the CrFe system, Calphad 11, 83-92 (1987).
assessment that models this phase

BCC_A2 (Cr–Fe)

Id: phase:cr-fe:bcc-a2; status assigned
Structure: W · A2 · cI2 · Im-3m (229); type st:a2-w-ci2; tier A: standard phase name; confidence high
Stability: stable in 7 of 7 calculated diagram(s): 300–2180.98 K, x(Fe) 0–1
Literature: 10 values (10 accepted) from 1 papers
Interactive: phase registry entry

Names (10): corpus: corpus:phase:cr-fe:bcc-a2
paper: paper:10.1016/j.calphad.2017.10.002:BCC, paper:10.1016/j.calphad.2017.10.002:BCC'
tdb: tdb:CrFe-11Xio.tdb:BCC_A2, tdb:CrFe-18Jac.tdb:BCC_A2, tdb:CrFe-20Ost.tdb:BCC_A2, tdb:CrFe-21Laf.tdb:BCC_A2, tdb:CrFe-23Zha.tdb:BCC_A2, tdb:CrFe-82Her.tdb:BCC_A2, tdb:CrFe-87And-LB.tdb:BCC_A2

TDB models of BCC_A2 (7): PHASE and CONSTITUENT statements as written

CrFe-11Xio.tdb: BCC_A2, type code %B, sha256 c6bdc1ced82c0a31…

37: PHASE BCC_A2 %B 2 1 3 !
38: CONST BCC_A2 : CR FE : VA : !

CrFe-18Jac.tdb: BCC_A2, type code %B, sha256 97353b426c2d299a…

29: PHASE BCC_A2 %B 2 1 3 !
30: CONST BCC_A2 : CR FE : VA : !

CrFe-20Ost.tdb: BCC_A2, type code %B, sha256 c009125a792bbcf5…

32: PHASE BCC_A2 %B 2 1 3 !
33: CONST BCC_A2 : CR FE : VA : !

CrFe-21Laf.tdb: BCC_A2, type code %B, sha256 a466cbb58ce8fff8…

32: PHASE BCC_A2 %B 2 1 3 !
33: CONST BCC_A2 : CR FE : VA : !

CrFe-23Zha.tdb: BCC_A2, type code %B, sha256 093591c8faaf3d7d…

35: PHASE BCC_A2 %B 2 1 3 !
36: CONST BCC_A2 : CR FE : VA : !

CrFe-82Her.tdb: BCC_A2, type code %B, sha256 a426ac8fa1a94471…

31: PHASE BCC_A2 %B 2 1 3 !
32: CONST BCC_A2 : CR FE : VA : !

CrFe-87And-LB.tdb: BCC_A2, type code %B, sha256 aee44c07511fe31f…

36: PHASE BCC_A2 %B 2 1 3 !
37: CONST BCC_A2 : CR FE : VA : !

Example references (8 of 8; assessments first):

doi:10.1016/j.calphad.2017.10.002 Aurélie Jacob, Erwin Povoden-Karadeniz, Ernst Kozeschnik, Revised thermodynamic description of the Fe-Cr system based on an improved sublattice model of the σ phase, Calphad 60, 16-28 (2018).
assessment that models this phase; reports values for this phase
doi:10.1007/s42243-022-00846-9 Z.-T. Zhang, J.-J. Wang, W. Liu, X.-G. Lu, J. Iron Steel Res. Int., 30, 660-76(2023).
assessment that models this phase
doi:10.1016/0364-5916(82)90018-9 Staffan Hertzman, Bo Sundman, A thermodynamic analysis of the fe-cr system, Calphad 6, 67-80 (1982).
assessment that models this phase
doi:10.1016/0364-5916(87)90021-6 Jan-Olof Andersson, Bo Sundman, Thermodynamic properties of the CrFe system, Calphad 11, 83-92 (1987).
assessment that models this phase
doi:10.1016/j.calphad.2011.05.002 Wei Xiong, Peter Hedström, Malin Selleby, Joakim Odqvist, Mattias Thuvander, Qing Chen, An improved thermodynamic modeling of the Fe–Cr system down to zero kelvin coupled with key experiments, Calphad 35, 355-366 (2011).
assessment that models this phase
doi:10.1016/j.jallcom.2020.156122 Marlena Ostrowska, Gabriele Cacciamani, Thermodynamic modelling of the σ and μ phases in several ternary systems containing Co, Cr, Fe, Mo, Re and W, Journal of Alloys and Compounds 845, 156122 (2020).
assessment that models this phase
doi:10.1016/j.jnucmat.2020.152692 Paul Lafaye, Caroline Toffolon-Masclet, Jean-Claude Crivello, Jean-Marc Joubert, Experimental study, first-principles calculation and thermodynamic modelling of the Cr–Fe–Nb–Sn–Zr quinary system for application as cladding materials in nuclear reactors., Journal of Nuclear Materials 544, 152692 (2021).
assessment that models this phase
doi:10.1080/10408431003788472 Wei Xiong, Malin Selleby, Qing Chen, Joakim Odqvist, Yong Du, Phase Equilibria and Thermodynamic Properties in the Fe-Cr System, Critical Reviews in Solid State and Materials Sciences 35, 125-152 (2010).
cited as the source of values for this phase

C14_LAVES (Cr–Fe)

Id: phase:cr-fe:c14-laves; status assigned
Structure: MgZn2 · C14 · hP12 · P6_3/mmc (194); type st:c14-mgzn2-hp12; tier A: standard phase name; confidence high
Caveat: partitioned order/disorder model in CrFe-87And-LB.tdb also describes the disordered state
Stability: not stable in 1 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:cr-fe:c14-laves
tdb: tdb:CrFe-87And-LB.tdb:C14_LAVES

TDB models of C14_LAVES (1): PHASE and CONSTITUENT statements as written

CrFe-87And-LB.tdb: C14_LAVES, type code %, sha256 aee44c07511fe31f…

66: PHASE C14_LAVES % 2 2 1 !
67: CONST C14_LAVES : CR% FE% : CR FE : !

Example references (1 of 1; assessments first):

doi:10.1016/0364-5916(87)90021-6 Jan-Olof Andersson, Bo Sundman, Thermodynamic properties of the CrFe system, Calphad 11, 83-92 (1987).
assessment that models this phase

SIGMA_D8B (Cr–Fe)

Id: phase:cr-fe:d8b-sigma; status assigned
Structure: sigma-CrFe · D8_b · tP30 · P4_2/mnm (136); type st:d8-b-sigma-crfe-tp30; tier A: standard phase name; confidence high
Caveat: partitioned order/disorder model in CrFe-11Xio.tdb also describes the disordered state
Caveat: partitioned order/disorder model in CrFe-18Jac.tdb also describes the disordered state
Caveat: partitioned order/disorder model in CrFe-20Ost.tdb also describes the disordered state
Caveat: partitioned order/disorder model in CrFe-21Laf.tdb also describes the disordered state
Caveat: partitioned order/disorder model in CrFe-23Zha.tdb also describes the disordered state
Stability: stable in 7 of 7 calculated diagram(s): 704.29–1104.5 K, x(Fe) 0.48378–0.57894
Literature: 41 values (41 accepted) from 1 papers
Interactive: phase registry entry

Names (10): corpus: corpus:phase:cr-fe:d8b-sigma, corpus:phase:cr-fe:sigma-d8b
paper: paper:10.1016/j.calphad.2017.10.002:σ
tdb: tdb:CrFe-11Xio.tdb:SIGMA_D8B, tdb:CrFe-18Jac.tdb:SIGMA_D8B, tdb:CrFe-20Ost.tdb:SIGMA_D8B, tdb:CrFe-21Laf.tdb:SIGMA_D8B, tdb:CrFe-23Zha.tdb:SIGMA_D8B, tdb:CrFe-82Her.tdb:SIGMA_D8B, tdb:CrFe-87And-LB.tdb:SIGMA_D8B

TDB models of SIGMA_D8B (7): PHASE and CONSTITUENT statements as written

CrFe-11Xio.tdb: SIGMA_D8B, type code %, sha256 c6bdc1ced82c0a31…

42: PHASE SIGMA_D8B % 2 10 20 !
43: CONST SIGMA_D8B : CR FE : CR FE : !

CrFe-18Jac.tdb: SIGMA_D8B, type code %, sha256 97353b426c2d299a…

39: PHASE SIGMA_D8B % 3 10 4 16 !
40: CONST SIGMA_D8B : CR FE : CR FE : CR FE : !

CrFe-20Ost.tdb: SIGMA_D8B, type code %, sha256 c009125a792bbcf5…

42: PHASE SIGMA_D8B % 3 10 4 16 !
43: CONST SIGMA_D8B : CR FE : CR FE : CR FE : !

CrFe-21Laf.tdb: SIGMA_D8B, type code %, sha256 a466cbb58ce8fff8…

42: PHASE SIGMA_D8B % 2 10 20 !
43: CONST SIGMA_D8B : CR FE : CR FE : !

CrFe-23Zha.tdb: SIGMA_D8B, type code %, sha256 093591c8faaf3d7d…

45: PHASE SIGMA_D8B % 3 10 4 16 !
46: CONST SIGMA_D8B : CR FE : CR FE : CR FE : !

CrFe-82Her.tdb: SIGMA_D8B, type code %, sha256 a426ac8fa1a94471…

41: PHASE SIGMA_D8B % 3 10 4 16 !
42: CONST SIGMA_D8B : FE : CR : CR FE : !

CrFe-87And-LB.tdb: SIGMA_D8B, type code %, sha256 aee44c07511fe31f…

46: PHASE SIGMA_D8B % 3 10 4 16 !
47: CONST SIGMA_D8B : FE : CR : CR FE : !

Example references (9 of 9; assessments first):

doi:10.1016/j.calphad.2017.10.002 Aurélie Jacob, Erwin Povoden-Karadeniz, Ernst Kozeschnik, Revised thermodynamic description of the Fe-Cr system based on an improved sublattice model of the σ phase, Calphad 60, 16-28 (2018).
assessment that models this phase; reports values for this phase
doi:10.1007/s42243-022-00846-9 Z.-T. Zhang, J.-J. Wang, W. Liu, X.-G. Lu, J. Iron Steel Res. Int., 30, 660-76(2023).
assessment that models this phase
doi:10.1016/0364-5916(82)90018-9 Staffan Hertzman, Bo Sundman, A thermodynamic analysis of the fe-cr system, Calphad 6, 67-80 (1982).
assessment that models this phase
doi:10.1016/0364-5916(87)90021-6 Jan-Olof Andersson, Bo Sundman, Thermodynamic properties of the CrFe system, Calphad 11, 83-92 (1987).
assessment that models this phase
doi:10.1016/j.calphad.2011.05.002 Wei Xiong, Peter Hedström, Malin Selleby, Joakim Odqvist, Mattias Thuvander, Qing Chen, An improved thermodynamic modeling of the Fe–Cr system down to zero kelvin coupled with key experiments, Calphad 35, 355-366 (2011).
assessment that models this phase
doi:10.1016/j.jallcom.2020.156122 Marlena Ostrowska, Gabriele Cacciamani, Thermodynamic modelling of the σ and μ phases in several ternary systems containing Co, Cr, Fe, Mo, Re and W, Journal of Alloys and Compounds 845, 156122 (2020).
assessment that models this phase
doi:10.1016/j.jnucmat.2020.152692 Paul Lafaye, Caroline Toffolon-Masclet, Jean-Claude Crivello, Jean-Marc Joubert, Experimental study, first-principles calculation and thermodynamic modelling of the Cr–Fe–Nb–Sn–Zr quinary system for application as cladding materials in nuclear reactors., Journal of Nuclear Materials 544, 152692 (2021).
assessment that models this phase
doi:10.1016/j.calphad.2006.09.002 Marcel H. F. Sluiter, Ab initio lattice stabilities of some elemental complex structures, Calphad (2006).
cited as the source of values for this phase
doi:10.1080/10408431003788472 Wei Xiong, Malin Selleby, Qing Chen, Joakim Odqvist, Yong Du, Phase Equilibria and Thermodynamic Properties in the Fe-Cr System, Critical Reviews in Solid State and Materials Sciences 35, 125-152 (2010).
cited as the source of values for this phase

FCC_A1 (Cr–Fe)

Id: phase:cr-fe:fcc-a1; status assigned
Structure: Cu · A1 · cF4 · Fm-3m (225); type st:a1-cu-cf4; tier A: standard phase name; confidence high
Stability: stable in 6 of 7 calculated diagram(s): 1117.16–1671.06 K, x(Fe) 0.87767–1
Literature: 2 values (2 accepted) from 1 papers
Interactive: phase registry entry

Names (9): corpus: corpus:phase:cr-fe:fcc-a1
paper: paper:10.1016/j.calphad.2017.10.002:FCC
tdb: tdb:CrFe-11Xio.tdb:FCC_A1, tdb:CrFe-18Jac.tdb:FCC_A1, tdb:CrFe-20Ost.tdb:FCC_A1, tdb:CrFe-21Laf.tdb:FCC_A1, tdb:CrFe-23Zha.tdb:FCC_A1, tdb:CrFe-82Her.tdb:FCC_A1, tdb:CrFe-87And-LB.tdb:FCC_A1

TDB models of FCC_A1 (7): PHASE and CONSTITUENT statements as written

CrFe-11Xio.tdb: FCC_A1, type code %A, sha256 c6bdc1ced82c0a31…

32: PHASE FCC_A1 %A 2 1 1 !
33: CONST FCC_A1 : CR FE : VA : !

CrFe-18Jac.tdb: FCC_A1, type code %A, sha256 97353b426c2d299a…

24: PHASE FCC_A1 %A 2 1 1 !
25: CONST FCC_A1 : CR FE : VA : !

CrFe-20Ost.tdb: FCC_A1, type code %A, sha256 c009125a792bbcf5…

27: PHASE FCC_A1 %A 2 1 1 !
28: CONST FCC_A1 : CR FE : VA : !

CrFe-21Laf.tdb: FCC_A1, type code %A, sha256 a466cbb58ce8fff8…

27: PHASE FCC_A1 %A 2 1 1 !
28: CONST FCC_A1 : CR FE : VA : !

CrFe-23Zha.tdb: FCC_A1, type code %A, sha256 093591c8faaf3d7d…

30: PHASE FCC_A1 %A 2 1 1 !
31: CONST FCC_A1 : CR FE : VA : !

CrFe-82Her.tdb: FCC_A1, type code %A, sha256 a426ac8fa1a94471…

26: PHASE FCC_A1 %A 2 1 1 !
27: CONST FCC_A1 : CR FE : VA : !

CrFe-87And-LB.tdb: FCC_A1, type code %A, sha256 aee44c07511fe31f…

31: PHASE FCC_A1 %A 2 1 1 !
32: CONST FCC_A1 : CR FE : VA : !

Example references (8 of 8; assessments first):

doi:10.1016/j.calphad.2017.10.002 Aurélie Jacob, Erwin Povoden-Karadeniz, Ernst Kozeschnik, Revised thermodynamic description of the Fe-Cr system based on an improved sublattice model of the σ phase, Calphad 60, 16-28 (2018).
assessment that models this phase; reports values for this phase
doi:10.1007/s42243-022-00846-9 Z.-T. Zhang, J.-J. Wang, W. Liu, X.-G. Lu, J. Iron Steel Res. Int., 30, 660-76(2023).
assessment that models this phase
doi:10.1016/0364-5916(82)90018-9 Staffan Hertzman, Bo Sundman, A thermodynamic analysis of the fe-cr system, Calphad 6, 67-80 (1982).
assessment that models this phase
doi:10.1016/0364-5916(87)90021-6 Jan-Olof Andersson, Bo Sundman, Thermodynamic properties of the CrFe system, Calphad 11, 83-92 (1987).
assessment that models this phase
doi:10.1016/j.calphad.2011.05.002 Wei Xiong, Peter Hedström, Malin Selleby, Joakim Odqvist, Mattias Thuvander, Qing Chen, An improved thermodynamic modeling of the Fe–Cr system down to zero kelvin coupled with key experiments, Calphad 35, 355-366 (2011).
assessment that models this phase
doi:10.1016/j.jallcom.2020.156122 Marlena Ostrowska, Gabriele Cacciamani, Thermodynamic modelling of the σ and μ phases in several ternary systems containing Co, Cr, Fe, Mo, Re and W, Journal of Alloys and Compounds 845, 156122 (2020).
assessment that models this phase
doi:10.1016/j.jnucmat.2020.152692 Paul Lafaye, Caroline Toffolon-Masclet, Jean-Claude Crivello, Jean-Marc Joubert, Experimental study, first-principles calculation and thermodynamic modelling of the Cr–Fe–Nb–Sn–Zr quinary system for application as cladding materials in nuclear reactors., Journal of Nuclear Materials 544, 152692 (2021).
assessment that models this phase
doi:10.1080/10408431003788472 Wei Xiong, Malin Selleby, Qing Chen, Joakim Odqvist, Yong Du, Phase Equilibria and Thermodynamic Properties in the Fe-Cr System, Critical Reviews in Solid State and Materials Sciences 35, 125-152 (2010).
cited as the source of values for this phase

HCP_A3 (Cr–Fe)

Id: phase:cr-fe:hcp-a3; status assigned
Structure: Mg · A3 · hP2 · P6_3/mmc (194); type st:a3-mg-hp2; tier A: standard phase name; confidence high
Stability: not stable in 6 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (7): corpus: corpus:phase:cr-fe:hcp-a3
tdb: tdb:CrFe-18Jac.tdb:HCP_A3, tdb:CrFe-20Ost.tdb:HCP_A3, tdb:CrFe-21Laf.tdb:HCP_A3, tdb:CrFe-23Zha.tdb:HCP_A3, tdb:CrFe-82Her.tdb:HCP_A3, tdb:CrFe-87And-LB.tdb:HCP_A3

TDB models of HCP_A3 (6): PHASE and CONSTITUENT statements as written

CrFe-18Jac.tdb: HCP_A3, type code %A, sha256 97353b426c2d299a…

34: PHASE HCP_A3 %A 2 1 0.5 !
35: CONST HCP_A3 : CR FE : VA : !

CrFe-20Ost.tdb: HCP_A3, type code %A, sha256 c009125a792bbcf5…

37: PHASE HCP_A3 %A 2 1 0.5 !
38: CONST HCP_A3 : CR FE : VA : !

CrFe-21Laf.tdb: HCP_A3, type code %A, sha256 a466cbb58ce8fff8…

37: PHASE HCP_A3 %A 2 1 0.5 !
38: CONST HCP_A3 : CR FE : VA : !

CrFe-23Zha.tdb: HCP_A3, type code %A, sha256 093591c8faaf3d7d…

40: PHASE HCP_A3 %A 2 1 0.5 !
41: CONST HCP_A3 : CR FE : VA : !

CrFe-82Her.tdb: HCP_A3, type code %A, sha256 a426ac8fa1a94471…

36: PHASE HCP_A3 %A 2 1 0.5 !
37: CONST HCP_A3 : CR FE : VA : !

CrFe-87And-LB.tdb: HCP_A3, type code %A, sha256 aee44c07511fe31f…

41: PHASE HCP_A3 %A 2 1 0.5 !
42: CONST HCP_A3 : CR FE : VA : !

Example references (6 of 6; assessments first):

doi:10.1007/s42243-022-00846-9 Z.-T. Zhang, J.-J. Wang, W. Liu, X.-G. Lu, J. Iron Steel Res. Int., 30, 660-76(2023).
assessment that models this phase
doi:10.1016/0364-5916(82)90018-9 Staffan Hertzman, Bo Sundman, A thermodynamic analysis of the fe-cr system, Calphad 6, 67-80 (1982).
assessment that models this phase
doi:10.1016/0364-5916(87)90021-6 Jan-Olof Andersson, Bo Sundman, Thermodynamic properties of the CrFe system, Calphad 11, 83-92 (1987).
assessment that models this phase
doi:10.1016/j.calphad.2017.10.002 Aurélie Jacob, Erwin Povoden-Karadeniz, Ernst Kozeschnik, Revised thermodynamic description of the Fe-Cr system based on an improved sublattice model of the σ phase, Calphad 60, 16-28 (2018).
assessment that models this phase
doi:10.1016/j.jallcom.2020.156122 Marlena Ostrowska, Gabriele Cacciamani, Thermodynamic modelling of the σ and μ phases in several ternary systems containing Co, Cr, Fe, Mo, Re and W, Journal of Alloys and Compounds 845, 156122 (2020).
assessment that models this phase
doi:10.1016/j.jnucmat.2020.152692 Paul Lafaye, Caroline Toffolon-Masclet, Jean-Claude Crivello, Jean-Marc Joubert, Experimental study, first-principles calculation and thermodynamic modelling of the Cr–Fe–Nb–Sn–Zr quinary system for application as cladding materials in nuclear reactors., Journal of Nuclear Materials 544, 152692 (2021).
assessment that models this phase

HIGH_SIGMA (Cr–Fe)

Id: phase:cr-fe:high-sigma; status needs_review
No structure assigned. Why: unrecognised_name_tokens:HIGH
Candidate (name_token): sigma-CrFe · D8_b · tP30 · P4_2/mnm (136) — Strukturbericht/word 'D8B' in the TDB name
Candidate (sgte_mmc2): sigma-CrFe · D8_b · tP30 · P4_2/mnm (136) — Hallstedt 2025 mmc2 row for HIGH_SIGMA: CrMn (shown not to exist as a separate phase from sigma)
Candidate (tdb_comment): CrFe · tP30 · P4_2/mnm, D8_b — CrFe-87And-LB.tdb: 'Prototype CrFe (tP30, P4_2/mnm, D8_b)'
Stability: not stable in 1 calculated diagram(s)
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:cr-fe:high-sigma
tdb: tdb:CrFe-87And-LB.tdb:HIGH_SIGMA

TDB models of HIGH_SIGMA (1): PHASE and CONSTITUENT statements as written

CrFe-87And-LB.tdb: HIGH_SIGMA, type code %, sha256 aee44c07511fe31f…

56: PHASE HIGH_SIGMA % 3 10 4 16 !
57: CONST HIGH_SIGMA : FE : CR : CR FE : !

Example references (1 of 1; assessments first):

doi:10.1016/0364-5916(87)90021-6 Jan-Olof Andersson, Bo Sundman, Thermodynamic properties of the CrFe system, Calphad 11, 83-92 (1987).
assessment that models this phase

LIQUID (Cr–Fe)

Id: phase:cr-fe:liquid; status assigned
Structure: liquid; type st:liquid; liquid; confidence high
Stability: stable in 7 of 7 calculated diagram(s): 1782.96–4000 K, x(Fe) 0–1
Literature: 3 values (3 accepted) from 1 papers
Interactive: phase registry entry

Names (9): corpus: corpus:phase:cr-fe:liquid
paper: paper:10.1016/j.calphad.2017.10.002:L
tdb: tdb:CrFe-11Xio.tdb:LIQUID, tdb:CrFe-18Jac.tdb:LIQUID, tdb:CrFe-20Ost.tdb:LIQUID, tdb:CrFe-21Laf.tdb:LIQUID, tdb:CrFe-23Zha.tdb:LIQUID, tdb:CrFe-82Her.tdb:LIQUID, tdb:CrFe-87And-LB.tdb:LIQUID

TDB models of LIQUID (7): PHASE and CONSTITUENT statements as written

CrFe-11Xio.tdb: LIQUID, type code %A, sha256 c6bdc1ced82c0a31…

27: PHASE LIQUID:L %A 1 1 !
28: CONST LIQUID:L : CR FE : !

CrFe-18Jac.tdb: LIQUID, type code %, sha256 97353b426c2d299a…

19: PHASE LIQUID:L % 1 1 !
20: CONST LIQUID:L : CR FE : !

CrFe-20Ost.tdb: LIQUID, type code %, sha256 c009125a792bbcf5…

22: PHASE LIQUID:L % 1 1 !
23: CONST LIQUID:L : CR FE : !

CrFe-21Laf.tdb: LIQUID, type code %, sha256 a466cbb58ce8fff8…

22: PHASE LIQUID:L % 1 1 !
23: CONST LIQUID:L : CR FE : !

CrFe-23Zha.tdb: LIQUID, type code %, sha256 093591c8faaf3d7d…

25: PHASE LIQUID:L % 1 1 !
26: CONST LIQUID:L : CR FE : !

CrFe-82Her.tdb: LIQUID, type code %, sha256 a426ac8fa1a94471…

21: PHASE LIQUID:L % 1 1 !
22: CONST LIQUID:L : CR FE : !

CrFe-87And-LB.tdb: LIQUID, type code %, sha256 aee44c07511fe31f…

26: PHASE LIQUID:L % 1 1 !
27: CONST LIQUID:L : CR FE : !

Example references (8 of 8; assessments first):

doi:10.1016/j.calphad.2017.10.002 Aurélie Jacob, Erwin Povoden-Karadeniz, Ernst Kozeschnik, Revised thermodynamic description of the Fe-Cr system based on an improved sublattice model of the σ phase, Calphad 60, 16-28 (2018).
assessment that models this phase; reports values for this phase
doi:10.1007/s42243-022-00846-9 Z.-T. Zhang, J.-J. Wang, W. Liu, X.-G. Lu, J. Iron Steel Res. Int., 30, 660-76(2023).
assessment that models this phase
doi:10.1016/0364-5916(82)90018-9 Staffan Hertzman, Bo Sundman, A thermodynamic analysis of the fe-cr system, Calphad 6, 67-80 (1982).
assessment that models this phase
doi:10.1016/0364-5916(87)90021-6 Jan-Olof Andersson, Bo Sundman, Thermodynamic properties of the CrFe system, Calphad 11, 83-92 (1987).
assessment that models this phase
doi:10.1016/j.calphad.2011.05.002 Wei Xiong, Peter Hedström, Malin Selleby, Joakim Odqvist, Mattias Thuvander, Qing Chen, An improved thermodynamic modeling of the Fe–Cr system down to zero kelvin coupled with key experiments, Calphad 35, 355-366 (2011).
assessment that models this phase
doi:10.1016/j.jallcom.2020.156122 Marlena Ostrowska, Gabriele Cacciamani, Thermodynamic modelling of the σ and μ phases in several ternary systems containing Co, Cr, Fe, Mo, Re and W, Journal of Alloys and Compounds 845, 156122 (2020).
assessment that models this phase
doi:10.1016/j.jnucmat.2020.152692 Paul Lafaye, Caroline Toffolon-Masclet, Jean-Claude Crivello, Jean-Marc Joubert, Experimental study, first-principles calculation and thermodynamic modelling of the Cr–Fe–Nb–Sn–Zr quinary system for application as cladding materials in nuclear reactors., Journal of Nuclear Materials 544, 152692 (2021).
assessment that models this phase
doi:10.1080/10408431003788472 Wei Xiong, Malin Selleby, Qing Chen, Joakim Odqvist, Yong Du, Phase Equilibria and Thermodynamic Properties in the Fe-Cr System, Critical Reviews in Solid State and Materials Sciences 35, 125-152 (2010).
cited as the source of values for this phase

SIGMA_OLD (Cr–Fe)

Id: phase:cr-fe:old-sigma; status assigned
Structure: sigma-CrFe · D8_b · tP30 · P4_2/mnm (136); type st:d8-b-sigma-crfe-tp30; tier A: standard phase name; confidence high
Stability: stable in 1 of 1 calculated diagram(s): 786.21–1104.5 K, x(Fe) 0.48601–0.56338
Literature: 0 values (0 accepted) from 0 papers
Interactive: phase registry entry

Names (2): corpus: corpus:phase:cr-fe:old-sigma
tdb: tdb:CrFe-87And-LB.tdb:SIGMA_OLD

TDB models of SIGMA_OLD (1): PHASE and CONSTITUENT statements as written

CrFe-87And-LB.tdb: SIGMA_OLD, type code %, sha256 aee44c07511fe31f…

51: PHASE SIGMA_OLD % 3 8 4 18 !
52: CONST SIGMA_OLD : FE : CR : CR FE : !

Example references (1 of 1; assessments first):

doi:10.1016/0364-5916(87)90021-6 Jan-Olof Andersson, Bo Sundman, Thermodynamic properties of the CrFe system, Calphad 11, 83-92 (1987).
assessment that models this phase

Please cite

R. Arróyave, J. Saal, D. Shin, ORCHID-Registry: phase registry of binary systems (version 2026.10; Version 1, machine-extracted), Zenodo (2026). doi:10.5281/zenodo.23735970
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 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); the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work). 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_phase_registry_2026,
  author    = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon},
  title     = {{ORCHID-Registry: phase registry of binary systems}},
  version   = {2026.10},
  publisher = {Zenodo},
  year      = {2026},
  doi       = {10.5281/zenodo.23735970},
  url       = {https://doi.org/10.5281/zenodo.23735970},
  note      = {Version 1, machine-extracted}
}

@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}
}