Abstract
The phase equilibria among the face-centered cubic (fcc), body-centered cubic (bcc), and βMn phases at 800, 900, 1000, 1100, and 1200 °C were examined by electron probe microanalysis (EPMA), and the A2/B2 and B2/D03 ordering temperatures were also determined using the diffusion couple method and differential scanning calorimetry (DSC). The critical temperatures for the A2/B2 and B2/D03 ordering were found to increase with increasing Mn content. Thermodynamic assessment of the Fe−Mn−Al system was also undertaken with use of experimental data for the phase equilibria and order-disorder transition temperatures using the CALPHAD (Calculation of Phase Diagrams) method. The Gibbs energies of the liquid, αMn, βMn, fcc, and ε phases were described by the subregular solution model and that of the bcc phase was represented by the two-sublattice model. The thermodynamic parameters for describing the phase equilibria and the ordering of the bcc phase were optimized with good agreement between the calculated and experimental results.
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References
1933Kos: W. Köster, and W. Tonn, Die Eisenecke des Systems Eisen-Mangan-Alminium, Arch Eisenhüttenwes, 1933, 7, p. 365–366, in German
1948Red: O. Redlich, and A.T. Kister, Algebraic Representation of Thermodynamic Properties and the Classification of Solutions. Ind. Eng. Chem., 1948, 40, p 345–348
1959Sch: D.J. Schmatz. Formation of Beta Manganese-Type Structure in Iron-Aluminum-Manganese Alloys, Trans. AIME, 1959, 215, lp 21–123
1976All1: S.M. Allen, and J.W. Cahn, Mechanisms of Phase Transformations within the Miscibility Gap of Fe-rich Fe−Al Alloys, Acta Metall., 1976, 24 (5), p 425–437
1976All2: S.M. Allen, and J.W. Cahn, On Tricritical Points Resulting from the Intersection of Lines of Higher-Order Transitions with Spinodals, Scripta Metall., 1976, 10 (5), p 451–454
1977Cha: D.J. Chakrabati, Phase Stability in Ternary System of Transition Elements with Aluminum, Metall. Trans., 1977, 8B, p 112–114
1978Ban: S.K. Banerji, Austenitic Stainless-Steel without Nickel and Chromium, Metall. Prog., 1978, 113 (4), p 59–62
1978Hil: M. Hillert, and M. Jarl, A Model for Alloying Effects in Ferromagnetic Metals, CALPHAD, 1978, 2 (3), p 227–238
1981Cha: J. Charles, A. Berghezan, A. Lutts, and P.L. Dancolsne, New Cryogenic Materials—Fe−Mn−Al Alloys, Metall. Prog., 1981, 119 (6), p 71–74
1983Nis: T. Nishizawa, S.M. Hao, M. Hasebe, and K. Ishida, Thermodynamic Analysis of Miscibility Gap due to Ordering in Ternary Systems, Acta Metall., 1983, 31 (9), p 1403–1416
1984Hao: S.M. Hao, T. Takayama, K. Ishida, and T. Nishizawa, Miscibility Gap in Fe−Ni−Al and Fe−Ni−Al−Co Systems, Metall. Trans. A, 1984, 15A, p 1819–1828
1984Den: W.T. Denholm, J.D. Esdaile, N.G. Siviour, and B.W. Wilson, Crystallization Studies in the Aluminum-Rich Corner of the Aluminum-Iron-Manganese System, Metall. Trans. A, 1984, 15A, p 1311–1317
1985Sun: B. Sundman, B. Jansson, and J-O. Andersson, The Thermo-Calc Databank System, CALPHAD, 1985, 9 (2), p 150–190
1989Hua: W. Huang. An Assessment of the Fe−Mn System, CALPHAD, 1989, 13 (3), p 243–252
1989Sat: K. Sato, K. Tanaka, and Y. Inoue, Determination of α/γ Equilibrium in the Iron Rich Portion of the Fe−Mn−Al System, ISIJ Int., 1989, 29 (9), p 788–792
1991Din: A.T. Dinsdale, SGTE Data for Pure Elements, CALPHAD, 1991, 15 (4), p 317–425
1992Jan: A. Jansson, A Thermodynamic Evaluation of the Al−Mn System, Metall. Trans. A, 1992, 23A, p 2953–2962
1992Ran: Q. Ran, Aluminum-Iron-Manganese, Ternary Alloys—A Comprehensive Compendium of Evaluated Constitutional Data and Phase Diagrams, Volume 5, G. Petzow and G. Effenberg, Ed., VCH, Weinheim, Germany, 1992, p 250–264
1993Liu1: X.J. Liu, and S.M. Hao, Phase Equilibria and α(BCC) Phase Region Continuity at 1000°C in the Fe−Mn−Al System, Scripta Metall. Mater., 1993, 28, p 611–616
1993Liu2: X.J. Liu, and S.M. Hao, A Thermodynamic Calculation of the Fe−Mn−Al Ternary System, CALPHAD, 1993, 17 (1), p 79–91
1996Liu1: X.J. Liu, S.M. Hao, L.Y. Xu, Y.F. Guo, and H. Chen, Experimental Study of the Phase Equilibria in the Fe−Mn−Al System, Metall. Mater. Trans. A, 1996, 27A, p 2429–2435
1996Liu2: X.J. Liu, R. Kainuma, H. Ohtani, and K. Ishida. Phase Equilibria in the Mn-rich Portion of the Binary System Mn−Al. J. Alloys Compd., 1996, 235, p 256–261
1997Ans: I. Ansara, N. Dupin, and B. Sundman, When is a Compound Energy not a Compound Energy? A Critique of the 2-sublatticr Order/Disorder Model, CALPHAD, 1997, 21 (4), p 535–542
1998Liu: X.J. Liu, I. Ohnuma, R. Kainuma, and K. Ishida, Phase Equilibria in the Cu-rich Portion of the Cu−Al Binary System. J. Alloy Compd., 1998, 264, p 201–208
1998Ish: K. Ishikawa, M. Ise, I. Ohnuma, R. Kainuma, and K. Ishida, Phase Equilibria and Stability of the bcc Aluminide in the Co−Cr−Al System, Ber. Bunsen. Phys. Chem., 1998, 102 (9), p 1206–1210
1998Ohn: I. Ohnuma, O. Ikeda, R. Kainuma, B. Sundman, and K. Ishida, Interaction between Magnetic and Chemical Ordering Using Compound Energy Model, Z. Metalkde., 1998, 89, p 847–853
1999Liu: X.J. Liu, I. Ohnuma, R. Kainuma, and K. Ishida. Thermodynamic Assessment of the Aluminum-Manganese (Al−Mn) Binary Phase Diagram, J. Phase Equilibria, 1999, 20 (1), p 45–56
2000Kai: R. Kainuma, I. Ohnuma, K. Ishikawa, and K. Ishida, Stability of B2 Phase in the Ti-rich Portion of Ti−Al−Cr and Ti−Al−Fe Ternary Systems, Intermetallics, 2000, 8, p 869–875
2001Ike: O. Ikeda, I. Ohnuma, R. Kainuma, and K. Ishida, Phase Equilibria and Stability of Ordered bee Phase in the Fe-rich Portion of the Fe−Al System, Intermetallics, 2001, 9, p 755–761
2004Ohn: I. Ohnuma, N. Kamiya, R. Kainuma, and K. Ishida, Tohoku University, private communication
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Umino, R., Liu, X.J., Sutou, Y. et al. Experimental determination and thermodynamic calculation of phase equilibria in the Fe−Mn−Al system. JPED 27, 54–62 (2006). https://doi.org/10.1361/105497106X92817
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DOI: https://doi.org/10.1361/105497106X92817