Fe–Tb system

45 accepted literature values from 1 paper(s) (experimental 15, model 30); 3 calculated phase diagram(s). 1 further extracted value(s) not accepted by the reader-agreement checks are only in the JSON/CSV.

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

Accepted values by evidence class
Evidence classValues
experimental15
model30
Accepted values by property group
Property groupValues
invariant reaction38
phase transition7

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 fileAssessmentSHA-256Links
FeTb-17Ron.tdbM.H. Rong, X.L. Chen, J. Wang, G.H. Rao, H.Y. Zhou, Calphad, 59, 154-63(2017). doi:10.1016/j.calphad.2017.10.00346346f5bff319295d6485f426e1c534c7b986239e67fd24c2aa0128025114e9fviewer · TDB · JSON
FeTb-23Ye.tdbH. Ye, M. Rong, Q. Chen, Q. Yao, J. Wang, G. Rao, H. Zhou, J. Mater. Inf., 3, 15(2023).0eb2e62ea5c9bc113ee57ca55d8fd8a9acb4dcae874a32118b4648934f51e744viewer · TDB · JSON
FeTb-94Lan.tdbS. Landin, J. Agren, J. Alloys Compd., 207-208, 449-53(1994). doi:10.1016/0925-8388(94)90261-54276274a275273a7487c0c4d613e47325771b9d1438c927c46120eebc7c69db3viewer · TDB · JSON
Calculated three-phase invariants (model, mole fraction of the second component)
TDB fileT (K)Phases at the invariant
FeTb-17Ron.tdb1653.64FCC_A1 (x(Tb) 1.300e-4) + BCC_A2 (x(Tb) 6.200e-4) + LIQUID (x(Tb) 0.07765)
FeTb-17Ron.tdb1653.64FCC_A1 (x(Tb) 1.300e-4) + BCC_A2 (x(Tb) 6.200e-4) + LIQUID (x(Tb) 0.07765)
FeTb-17Ron.tdb1584.44FCC_A1 (x(Tb) 1.500e-4) + FE17TB2 (x(Tb) 0.10526) + LIQUID (x(Tb) 0.11199)
FeTb-17Ron.tdb1584.44FCC_A1 (x(Tb) 1.500e-4) + FE17TB2 (x(Tb) 0.10526) + LIQUID (x(Tb) 0.1119)
FeTb-17Ron.tdb1560.88LIQUID (x(Tb) 0.96664) + BCC_A2 (x(Tb) 0.99976) + HCP_A3 (x(Tb) 1)
FeTb-17Ron.tdb1560.88LIQUID (x(Tb) 0.9667) + BCC_A2 (x(Tb) 0.99976) + HCP_A3 (x(Tb) 1)
FeTb-17Ron.tdb1546.16FE17TB2 (x(Tb) 0.10526) + LIQUID (x(Tb) 0.1989) + FE23TB6_D8A (x(Tb) 0.2069)
FeTb-17Ron.tdb1546.15FE17TB2 (x(Tb) 0.10526) + LIQUID (x(Tb) 0.19957) + FE23TB6_D8A (x(Tb) 0.2069)
FeTb-17Ron.tdb1546.15FE17TB2 (x(Tb) 0.10526) + LIQUID (x(Tb) 0.19992) + FE23TB6_D8A (x(Tb) 0.2069)
FeTb-17Ron.tdb1484.17FE23TB6_D8A (x(Tb) 0.2069) + FE3TB (x(Tb) 0.25) + LIQUID (x(Tb) 0.3524)
FeTb-17Ron.tdb1484.17FE23TB6_D8A (x(Tb) 0.2069) + FE3TB (x(Tb) 0.25) + LIQUID (x(Tb) 0.3518)
FeTb-17Ron.tdb1458.67FE3TB (x(Tb) 0.25) + FE2TB_C15 (x(Tb) 0.33333) + LIQUID (x(Tb) 0.39087)
FeTb-17Ron.tdb1458.67FE3TB (x(Tb) 0.25) + FE2TB_C15 (x(Tb) 0.33333) + LIQUID (x(Tb) 0.39157)
FeTb-17Ron.tdb1458.66FE3TB (x(Tb) 0.25) + FE2TB_C15 (x(Tb) 0.33333) + LIQUID (x(Tb) 0.39118)
FeTb-17Ron.tdb1184.93FCC_A1 (x(Tb) 0) + BCC_A2 (x(Tb) 1.000e-5) + FE17TB2 (x(Tb) 0.10526)
FeTb-17Ron.tdb1184.93FCC_A1 (x(Tb) 0) + BCC_A2 (x(Tb) 1.000e-5) + FE17TB2 (x(Tb) 0.10526)
FeTb-17Ron.tdb1119.25FE2TB_C15 (x(Tb) 0.33333) + LIQUID (x(Tb) 0.69342) + HCP_A3 (x(Tb) 1)
FeTb-17Ron.tdb1119.25FE2TB_C15 (x(Tb) 0.33333) + LIQUID (x(Tb) 0.69336) + HCP_A3 (x(Tb) 1)
FeTb-17Ron.tdb1119.25FE2TB_C15 (x(Tb) 0.33333) + LIQUID (x(Tb) 0.6935) + HCP_A3 (x(Tb) 1)
FeTb-17Ron.tdb1119.25FE2TB_C15 (x(Tb) 0.33333) + LIQUID (x(Tb) 0.6935) + HCP_A3 (x(Tb) 1)
FeTb-23Ye.tdb1666.88FCC_A1 (x(Tb) 1.000e-5) + BCC_A2 (x(Tb) 3.000e-5) + LIQUID (x(Tb) 0.05049)
FeTb-23Ye.tdb1666.88FCC_A1 (x(Tb) 1.000e-5) + BCC_A2 (x(Tb) 3.000e-5) + LIQUID (x(Tb) 0.0505)
FeTb-23Ye.tdb1666.88FCC_A1 (x(Tb) 1.000e-5) + BCC_A2 (x(Tb) 3.000e-5) + LIQUID (x(Tb) 0.05049)
FeTb-23Ye.tdb1575.15FCC_A1 (x(Tb) 1.000e-5) + LIQUID (x(Tb) 0.07639) + FE17TB2 (x(Tb) 0.10526)
FeTb-23Ye.tdb1575.15FCC_A1 (x(Tb) 1.000e-5) + LIQUID (x(Tb) 0.07641) + FE17TB2 (x(Tb) 0.10526)
FeTb-23Ye.tdb1575.15FCC_A1 (x(Tb) 1.000e-5) + LIQUID (x(Tb) 0.07638) + FE17TB2 (x(Tb) 0.10526)
FeTb-23Ye.tdb1561.4LIQUID (x(Tb) 0.96804) + BCC_A2 (x(Tb) 0.99987) + HCP_A3 (x(Tb) 1)
FeTb-23Ye.tdb1561.4LIQUID (x(Tb) 0.96811) + BCC_A2 (x(Tb) 0.99987) + HCP_A3 (x(Tb) 1)
FeTb-23Ye.tdb1546.59FE17TB2 (x(Tb) 0.10526) + LIQUID (x(Tb) 0.16657) + FE23TB6_D8A (x(Tb) 0.2069)
FeTb-23Ye.tdb1546.59FE17TB2 (x(Tb) 0.10526) + LIQUID (x(Tb) 0.16624) + FE23TB6_D8A (x(Tb) 0.2069)
FeTb-23Ye.tdb1485.39FE23TB6_D8A (x(Tb) 0.2069) + FE3TB (x(Tb) 0.25) + LIQUID (x(Tb) 0.31961)
FeTb-23Ye.tdb1485.39FE23TB6_D8A (x(Tb) 0.2069) + FE3TB (x(Tb) 0.25) + LIQUID (x(Tb) 0.31956)
FeTb-23Ye.tdb1461.48FE3TB (x(Tb) 0.25) + FE2TB_C15 (x(Tb) 0.33333) + LIQUID (x(Tb) 0.34893)
FeTb-23Ye.tdb1461.48FE3TB (x(Tb) 0.25) + FE2TB_C15 (x(Tb) 0.33333) + LIQUID (x(Tb) 0.34863)
FeTb-23Ye.tdb1461.48FE3TB (x(Tb) 0.25) + FE2TB_C15 (x(Tb) 0.33333) + LIQUID (x(Tb) 0.34897)
FeTb-23Ye.tdb1184.82BCC_A2 (x(Tb) 0) + FCC_A1 (x(Tb) 0) + FE17TB2 (x(Tb) 0.10526)
FeTb-23Ye.tdb1116.04FE2TB_C15 (x(Tb) 0.33333) + LIQUID (x(Tb) 0.67484) + HCP_A3 (x(Tb) 1)
FeTb-23Ye.tdb1116.04FE2TB_C15 (x(Tb) 0.33333) + LIQUID (x(Tb) 0.67465) + HCP_A3 (x(Tb) 1)
FeTb-23Ye.tdb1116.04FE2TB_C15 (x(Tb) 0.33333) + LIQUID (x(Tb) 0.67502) + HCP_A3 (x(Tb) 1)
FeTb-94Lan.tdb1637.02FCC_A1 (x(Tb) 0.00254) + BCC_A2 (x(Tb) 0.00363) + LIQUID (x(Tb) 0.09819)
FeTb-94Lan.tdb1578.32FCC_A1 (x(Tb) 0.0028) + FE17TB2 (x(Tb) 0.10526) + LIQUID (x(Tb) 0.13399)
FeTb-94Lan.tdb1578.32FCC_A1 (x(Tb) 0.0028) + FE17TB2 (x(Tb) 0.10526) + LIQUID (x(Tb) 0.13387)
FeTb-94Lan.tdb1560.46LIQUID (x(Tb) 0.96474) + BCC_A2 (x(Tb) 0.99882) + HCP_A3 (x(Tb) 0.99915)
FeTb-94Lan.tdb1542.75FE17TB2 (x(Tb) 0.10526) + FE23TB6_D8A (x(Tb) 0.2069) + LIQUID (x(Tb) 0.21167)
FeTb-94Lan.tdb1542.75FE17TB2 (x(Tb) 0.10526) + FE23TB6_D8A (x(Tb) 0.2069) + LIQUID (x(Tb) 0.21131)
FeTb-94Lan.tdb1542.75FE17TB2 (x(Tb) 0.10526) + FE23TB6_D8A (x(Tb) 0.2069) + LIQUID (x(Tb) 0.21193)
FeTb-94Lan.tdb1482.35FE23TB6_D8A (x(Tb) 0.2069) + FE3TB (x(Tb) 0.25) + LIQUID (x(Tb) 0.36103)
FeTb-94Lan.tdb1482.34FE23TB6_D8A (x(Tb) 0.2069) + FE3TB (x(Tb) 0.25) + LIQUID (x(Tb) 0.3616)
FeTb-94Lan.tdb1482.34FE23TB6_D8A (x(Tb) 0.2069) + FE3TB (x(Tb) 0.25) + LIQUID (x(Tb) 0.36179)
FeTb-94Lan.tdb1482.34FE23TB6_D8A (x(Tb) 0.2069) + FE3TB (x(Tb) 0.25) + LIQUID (x(Tb) 0.3618)
FeTb-94Lan.tdb1455.8FE3TB (x(Tb) 0.25) + FE2TB_C15 (x(Tb) 0.33333) + LIQUID (x(Tb) 0.4043)
FeTb-94Lan.tdb1455.8FE3TB (x(Tb) 0.25) + FE2TB_C15 (x(Tb) 0.33333) + LIQUID (x(Tb) 0.40366)
FeTb-94Lan.tdb1455.8FE3TB (x(Tb) 0.25) + FE2TB_C15 (x(Tb) 0.33333) + LIQUID (x(Tb) 0.40467)
FeTb-94Lan.tdb1185.05FCC_A1 (x(Tb) 9.000e-5) + BCC_A2 (x(Tb) 1.100e-4) + FE17TB2 (x(Tb) 0.10526)
FeTb-94Lan.tdb1122.85FE2TB_C15 (x(Tb) 0.33333) + LIQUID (x(Tb) 0.68684) + HCP_A3 (x(Tb) 0.99865)
FeTb-94Lan.tdb1122.85FE2TB_C15 (x(Tb) 0.33333) + LIQUID (x(Tb) 0.68674) + HCP_A3 (x(Tb) 0.99865)

Convex hulls: Materials Project DFT hull · OQMD DFT hull · CALPHAD hull FeTb-17Ron · CALPHAD hull FeTb-94Lan

Invariant reactions (literature)

Invariant reactions reported in the literature for the Fe–Tb system (38)
T (K)Reaction / phasesCompositions (mole fraction)ClassSourceLocationQuote
1667metatectic/catatectic: bcc(δ-Fe) ↔ fcc(γ-Fe) + LL: Tb 0.12experimental[1] Ye 2023
cites ref. 94
Table 6, p. 12, row 1
report
1666.9metatectic/catatectic: bcc(δ-Fe) ↔ fcc(γ-Fe) + LL: Tb 0.05model[1] Ye 2023Table 6, p. 12, row 4
report
1665.1metatectic/catatectic: bcc(δ-Fe) ↔ fcc(γ-Fe) + LL: Tb 0.08model[1] Ye 2023
cites ref. 104
Table 6, p. 12, row 2
report
1664metatectic/catatectic: bcc(δ-Fe) ↔ fcc(γ-Fe) + LL: Tb 0.1model[1] Ye 2023
cites ref. 27
Table 6, p. 12, row 3
report
1585peritecticexperimental[1] Ye 2023
cites ref. 92
p. 4
report
Four Fe17Tb2, Fe23Tb6, Fe3Tb, and Fe2Tb intermetallic compounds are produced via the peritectic transformation at 1,585 K, 1,549 K, 1,485 K, and 1,460 K, respectively, and Fe17Tb2 is produced at 1,589 K by the congruent melting.
1579eutectic: L ↔ Fe17Tb2 + fcc(γ-Fe)L: Tb 0.082model[1] Ye 2023
cites (cal
Table 6, p. 12, row 10
report
1576eutectic: L ↔ Fe17Tb2 + fcc(γ-Fe)L: Tb 0.075model[1] Ye 2023
cites ref. 27
Table 6, p. 12, row 11
report
1575eutectic: L ↔ Fe17Tb2 + fcc(γ-Fe)L: Tb 0.076model[1] Ye 2023Table 6, p. 12, row 12
report
1574eutectic: L ↔ Fe17Tb2+bcc-Feexperimental[1] Ye 2023
cites ref. 95
p. 4
report
A eutectic reaction (L ↔ Fe17Tb2+bcc-Fe) takes place according to the DTA results[95] at 1,574 K.
1574eutectic: L ↔ Fe17Tb2 + fcc(γ-Fe)L: Tb 0.075experimental[1] Ye 2023
cites ref. 95
Table 6, p. 12, row 9
report
1549eutectic: L ↔ Fe17Tb2 + Fe23Tb6L: Tb 0.216experimental[1] Ye 2023
cites ref. 92
Table 6, p. 12, row 17
report
1549peritecticexperimental[1] Ye 2023
cites ref. 92
p. 4
report
Four Fe17Tb2, Fe23Tb6, Fe3Tb, and Fe2Tb intermetallic compounds are produced via the peritectic transformation at 1,585 K, 1,549 K, 1,485 K, and 1,460 K, respectively, and Fe17Tb2 is produced at 1,589 K by the congruent melting.
1547eutectic: L ↔ Fe17Tb2 + Fe23Tb6experimental[1] Ye 2023
cites ref. 95
Table 6, p. 12, row 18
report
1546.5eutectic: L ↔ Fe17Tb2 + Fe23Tb6L: Tb 0.167model[1] Ye 2023Table 6, p. 12, row 22
report
1546eutectic: L ↔ Fe17Tb2 + Fe23Tb6L: Tb 0.208model[1] Ye 2023
cites ref. 27
Table 6, p. 12, row 21
report
1546eutectic: L ↔ Fe17Tb2 + Fe23Tb6L: Tb 0.19model[1] Ye 2023
cites (cal
Table 6, p. 12, row 20
report
1542.7eutectic: L ↔ Fe17Tb2 + Fe23Tb6L: Tb 0.212model[1] Ye 2023
cites ref. 104
Table 6, p. 12, row 19
report
1486peritectic: L+ Fe23Tb6 ↔ Fe3TbL: Tb 0.319model[1] Ye 2023Table 6, p. 12, row 29
report
1485peritectic: L+ Fe23Tb6 ↔ Fe3TbL: Tb 0.34model[1] Ye 2023
cites ref. 27
Table 6, p. 12, row 28
report
1485peritectic: L+ Fe23Tb6 ↔ Fe3TbL: Tb 0.349experimental[1] Ye 2023
cites ref. 92
Table 6, p. 12, row 25
report
1485peritecticexperimental[1] Ye 2023
cites ref. 92
p. 4
report
Four Fe17Tb2, Fe23Tb6, Fe3Tb, and Fe2Tb intermetallic compounds are produced via the peritectic transformation at 1,585 K, 1,549 K, 1,485 K, and 1,460 K, respectively, and Fe17Tb2 is produced at 1,589 K by the congruent melting.
1481peritectic: L+ Fe23Tb6 ↔ Fe3TbL: Tb 0.388model[1] Ye 2023
cites (cal
Table 6, p. 12, row 27
report
1473.1peritectic: L+ Fe23Tb6 ↔ Fe3TbL: Tb 0.361model[1] Ye 2023
cites ref. 104
Table 6, p. 12, row 26
report
1462.7peritectic: L + Fe3Tb ↔ Fe2TbL: Tb 0.348model[1] Ye 2023Table 6, p. 12, row 34
report
1460peritectic: L + Fe3Tb ↔ Fe2TbL: Tb 0.405model[1] Ye 2023
cites ref. 27
Table 6, p. 12, row 33
report
1460peritectic: L + Fe3Tb ↔ Fe2TbL: Tb 0.412experimental[1] Ye 2023
cites ref. 92
Table 6, p. 12, row 30
report
1460peritecticexperimental[1] Ye 2023
cites ref. 92
p. 4
report
Four Fe17Tb2, Fe23Tb6, Fe3Tb, and Fe2Tb intermetallic compounds are produced via the peritectic transformation at 1,585 K, 1,549 K, 1,485 K, and 1,460 K, respectively, and Fe17Tb2 is produced at 1,589 K by the congruent melting.
1459peritectic: L + Fe3Tb ↔ Fe2TbL: Tb 0.424model[1] Ye 2023
cites (cal
Table 6, p. 12, row 32
report
1456.6peritectic: L + Fe3Tb ↔ Fe2TbL: Tb 0.403model[1] Ye 2023
cites ref. 104
Table 6, p. 12, row 31
report
1185peritectoid: Fe17Tb2 + fcc(γ-Fe) ↔ bcc(α-Fe)model[1] Ye 2023
cites ref. 27
Table 6, p. 12, row 7
report
1185peritectoid: Fe17Tb2 + fcc(γ-Fe) ↔ bcc(α-Fe)experimental[1] Ye 2023
cites ref. 94
Table 6, p. 12, row 5
report
1184.8peritectoid: Fe17Tb2 + fcc(γ-Fe) ↔ bcc(α-Fe)model[1] Ye 2023
cites ref. 104
Table 6, p. 12, row 6
report
1184.8peritectoid: Fe17Tb2 + fcc(γ-Fe) ↔ bcc(α-Fe)model[1] Ye 2023Table 6, p. 12, row 8
report
1123eutectic: L ↔ Fe2Tb + hcp-TbL: Tb 0.687model[1] Ye 2023
cites ref. 104
Table 6, p. 12, row 36
report
1122eutectic: L ↔ Fe2Tb + hcp-TbL: Tb 0.7model[1] Ye 2023
cites (cal
Table 6, p. 12, row 37
report
1120eutectic: L ↔ Fe2Tb + hcp-TbL: Tb 0.69model[1] Ye 2023
cites ref. 27
Table 6, p. 12, row 38
report
1120eutectic: L ↔ Fe2Tb + hcp-TbL: Tb 0.72experimental[1] Ye 2023
cites ref. 92
Table 6, p. 12, row 35
report
1117.1eutectic: L ↔ Fe2Tb + hcp-TbL: Tb 0.675model[1] Ye 2023Table 6, p. 12, row 39
report

Other properties

Phase transition (7)

Phase transition, Fe–Tb system
PropertyValueT (K)Phases / compositionClassSourceLocationQuote
Phase transition1547 K1547congruent melting: L ↔ Fe23Tb6
L: Tb 0.207
model[1] Ye 2023
cites (cal
Table 6, p. 12, row 23
report
Phase transition1561.1 K1561.1congruent melting: L ↔ Fe23Tb6
L: Tb 0.207
model[1] Ye 2023Table 6, p. 12, row 24
report
Phase transition1585 K1585congruent melting: L ↔ Fe17Tb2
L: Tb 0.105
model[1] Ye 2023
cites (cal
Table 6, p. 12, row 14
report
Phase transition1586 K1586congruent melting: L ↔ Fe17Tb2
L: Tb 0.105
model[1] Ye 2023
cites ref. 27
Table 6, p. 12, row 15
report
Phase transition1587.5 K1587.5congruent melting: L ↔ Fe17Tb2
L: Tb 0.105
model[1] Ye 2023Table 6, p. 12, row 16
report
Phase transition1589 K1589congruent melting: L ↔ Fe17Tb2
L: Tb 0.105
experimental[1] Ye 2023
cites ref. 95
Table 6, p. 12, row 13
report
Phase transition1589 K1589congruent transformationexperimental[1] Ye 2023
cites ref. 92
p. 4
report
Four Fe17Tb2, Fe23Tb6, Fe3Tb, and Fe2Tb intermetallic compounds are produced via the peritectic transformation at 1,585 K, 1,549 K, 1,485 K, and 1,460 K, respectively, and Fe17Tb2 is produced at 1,589 K by the congruent melting.

Sources

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

  1. Hongjian Ye, Maohua Rong, Qing Chen, Qingrong Yao, Jiang Wang, Guanghui Rao et al., Assessment of phase equilibria and thermodynamic properties in the Fe-RE (RE = rare earth metals) binary systems, J Mater Inf 3 (2023). doi:10.20517/jmi.2023.08