Phase equilibria and thermodynamics of the Fe–Al–C system: Critical evaluation, experiment and thermodynamic optimization
作者： Anh Thu Phan , Min-Kyu Paek , Youn-Bae Kang
DOI: 10.1016/J.ACTAMAT.2014.07.006
关键词: Thermodynamics 、 Materials science 、 Ternary numeral system 、 Alloy 、 Isothermal process 、 Solid solution 、 Phase (matter) 、 CALPHAD 、 Phase diagram 、 Liquidus
摘要: Abstract In order to provide an efficient tool design alloy chemistry and processing conditions for high-strength, lightweight steel, investigation of the Fe–Al–C ternary system was carried out by experimental phase diagram measurement a CALPHAD thermodynamic analysis. Discrepancies between previously available results calculations were identified. The Fe–Al sub-binary re-optimized in obtain accurate description liquid phase, while Gibbs energies solid phases mainly taken from previous modeling. Phase equilibria among face-centered cubic (fcc)/body-centered (bcc)/graphite/κ-carbide/liquid temperature range 1000 1400 °C obtained chemical equilibration followed quenching, subsequent composition analysis using electron probe microanalysis/inductively coupled plasma spectroscopy. By merging revised binary with existing Fe–C Al–C descriptions, complete present study. modified quasi-chemical model pair approximation used solutions modeled compound energy formalism. A2/B2 order/disorder transition bcc into account. Compared known experiments/thermodynamic modeling, better agreement study, regarding stable region fcc solidification thermal peak near liquidus temperature. also reproduced various types data such as isothermal sections, vertical projection, etc. steel grades predicted discussed.
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sci-hub.se 参考文章(52)
博明 岡本, Phase diagrams of binary iron alloys ASM International. ,(1993)
V. Raghavan, Phase Diagrams Of Ternary Iron Alloys ,(1989)
Jutta Herrmann, Gerhard Inden, Gerhard Sauthoff, Microstructure and deformation behaviour of iron-rich iron-aluminium alloys with ternary carbon and silicon additions Steel Research International. ,vol. 75, pp. 343- 352 ,(2004) , 10.1002/SRIN.200405965
O Kubaschewski, W.A Dench, The heats of formation in the systems titanium-aluminium and titanium-iron Acta Metallurgica. ,vol. 3, pp. 339- 346 ,(1955) , 10.1016/0001-6160(55)90038-9
D. Raj, L. Bencze, D. Kath, W.A. Oates, J. Herrmann, L. Singheiser, K. Hilpert, Thermodynamic activity measurements in the B2 phases of the Fe–Al and Ni–Al systems Intermetallics. ,vol. 11, pp. 1119- 1124 ,(2003) , 10.1016/S0966-9795(03)00149-3
L. L. Oden, Phase equilibria in the Al-Fe-C system: Isothermal sections 1550 °C to 2300 °C Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science. ,vol. 20, pp. 2703- 2706 ,(1989) , 10.1007/BF02670164
A.T. Dinsdale, SGTE data for pure elements Calphad-computer Coupling of Phase Diagrams and Thermochemistry. ,vol. 15, pp. 317- 425 ,(1991) , 10.1016/0364-5916(91)90030-N
Michel H.G. Jacobs, Rainer Schmid-Fetzer, Phase behavior and thermodynamic properties in the system Fe–Al Calphad-computer Coupling of Phase Diagrams and Thermochemistry. ,vol. 33, pp. 170- 178 ,(2009) , 10.1016/J.CALPHAD.2008.07.010
Frank Stein, Martin Palm, Re-determination of transition temperatures in the Fe–Al system by differential thermal analysis International Journal of Materials Research. ,vol. 98, pp. 580- 588 ,(2007) , 10.3139/146.101512
K. Rzyman, Z. Moser, A.P. Miodownik, L. Kaufman, R.E. Watson, M. Weinert, Enthalpies of formation of AlFe: Experiment versus theory Calphad-computer Coupling of Phase Diagrams and Thermochemistry. ,vol. 24, pp. 309- 318 ,(2000) , 10.1016/S0364-5916(01)00007-4