含铬轻质双相钢相变行为的热力学计算
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摘要
通过相图计算和试验相结合,对含铬轻质钢体系(Fe-Mn-Al-Cr-C)中的一些关键体系的参数进行了评估与完善,初步建立了该五元体系的热力学数据库。并分别采用自建数据库与商用热力学数据库计算了含铬轻质钢的A3温度和熔点。结果发现:相比商用热力学数据库,采用自建数据库计算的A3温度和熔点与试验值更接近。同时,采用自建数据库与商用热力学数据库分别计算了含铬轻质钢试样经不同温度退火后奥氏体含量随温度的变化,发现自建数据库的预测结果与试验值更接近,可为含铬轻质钢成分和工艺的科学设计提供理论参考。
Combining the phase diagram calculation with the experiment,the thermodynamic parameters of some key systems of chromium-bearing lightweight steel system( Fe-Mn-Al-Cr-C) have been evaluated and improved. The iron-based thermodynamic database containing Mn,Al,Cr and C has been established. The transformation temperatures and melting points of chromium-bearing lightweight steel were calculated by USER database and commercial database,respectively. The results showed that transformation temperatures and melting points calculated by USER database was better agreement with the experiment results. Besides, the variation of austenite content with temperature after annealing at different temperatures was also predicted by USER database and commercial database. It was found that the results calculated by USER database were more closer to the experiment results,which could provide theoretical reference for the scientific design of the composition and heat treatment of chromium-bearing lightweight steel.
Combining the phase diagram calculation with the experiment,the thermodynamic parameters of some key systems of chromium-bearing lightweight steel system( Fe-Mn-Al-Cr-C) have been evaluated and improved. The iron-based thermodynamic database containing Mn,Al,Cr and C has been established. The transformation temperatures and melting points of chromium-bearing lightweight steel were calculated by USER database and commercial database,respectively. The results showed that transformation temperatures and melting points calculated by USER database was better agreement with the experiment results. Besides, the variation of austenite content with temperature after annealing at different temperatures was also predicted by USER database and commercial database. It was found that the results calculated by USER database were more closer to the experiment results,which could provide theoretical reference for the scientific design of the composition and heat treatment of chromium-bearing lightweight steel.
引文
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[18]CONNETABLE D,LACAZE J,MAUGIS P,et al. A Calphad assessment of Al-C-Fe system with theκcarbide modelled as an ordered form of the fcc phase[J]. Calphad,2008,32(2):361-370.
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[20] KHVAN A, HALLSTEDT B, BROECKMANN C. A Thermodynamic evaluation of Fe-Cr-C system[J]. Calphad,2014,46(3):24-33.
[21] LEE B J. A thermodynamic evaluation of the Fe-Cr-Mn-C system[J]. Zeitschrift Fur Metallkunde,1993,24(5):1017-1025.
[22]LEE B J. On the stability of Cr carbides[J]. Calphad,1992,16(2):121-149.
[23]KAJIHARA M,HILLERT M. Thermodynamic evaluation of the Cr-Ni-C system[J]. Metallurgical and Materials Transactions A,1990,21(10):2777-2787.
[24] THORPE W R,CHICCO B. The Fe-rich corner of the metastable C-Cr-Fe liquidus surface[J]. Metallurgical and Materials Transactions A,1985,16(9):1541-1549.
[25]ISHIDA K,OHTANI H,SATOH N,et al. Phase equilibria in Fe-Mn-Al-C alloys[J]. Transactions of the Iron&Steel Institute of Japan,1990,30(8):680-686.
[2] RANA R, LAHAYE C, RAY R K, et al. Overview of lightweight ferrous materials:strategies and promises[J]. JOM,2014,66(9):1734-1746.
[3] XU R C,HE Y L,JIANG H,et al. Microstructures andmechanical properties of ferrite-based lightweight steel with different compositions[J]. Chinese Journal of Iron and Steel,2017,24(7):737-742.
[4]LEE J W,WU C,LIU T,et al. The influence of Cr alloying on microstructures of Fe-Al-Mn-Cr alloys[J]. Scripta Materialia,2004,50(11):1389-1393.
[5]LIANG Y,GUO C P,LI C R,et al. Thermodynamic modeling of the Al-Cr system[J]. Journal of Alloys and Compounds,2008,460(1/2):314-319.
[6] GRUSHKO B, KOWALSKA-STRZECIWILK E,PRZEPIORZYNSKI B,et al. Investigation of the Al-Crγ-range[J]. Journal of Alloys and Compounds,2005,402(1/2):98-104.
[7] MAHDOUK K,GACHON J C. Thermodynamic investigation of the aluminum-chromium system[J]. Journal of Phase Equilibria,2000,21(2):157-166.
[8] GRBNER J, LUKAS H L, ALDINGER F, et al.Thermodynamic calculations in the Y-Al-C system[J]. Journal of Alloys and Compounds,1995,220(1/2):8-14.
[9] CHIN K G,LEE H J,KWAK J H,et al. Thermodynamic calculation on the stability of(Fe,Mn)3AlC carbide in high aluminum steels[J]. Journal of Alloys and Compounds,2010,505(1):217-223.
[10]JANSSON. A thermodynamic evaluation of the Al-Mn system[J]. Metallurgical and Materials Transactions A,1992,23(11):2953-2962.
[11] ANDERSSON J O. Thermodynamic properties of Cr-C[J].Calphad,1987,11(3):271-276.
[12] KHVAN A V, HALLSTEDT B, CHANG K, et al.Thermodynamic assessment of Cr-Nb-C and Mn-Nb-C systems[J]. Calphad,2012,39:54-61.
[13] GSTAFSON P A. Thermodynamic Evaluation of the Fe-C System[J]. Scandinavian Journal of Metallurgy,1985,14(5):259-267.
[14] HUANG W. A thermodynamic assessment of the Fe-Mn-C system[J]. Metallurgical and Materials Transactions A,1990,21(8):2115-2123.
[15]ANDERSSON J O,SUNDMAN B. Thermodynamic properties of the Cr-Fe system[J]. Calphad,1987,11(1):83-92.
[16]LEE B J. A thermodynamic evaluation of the Cr-Mn and Fe-CrMn systems[J]. Metallurgical and Materials Transactions A,1993,24(9):1919-1933.
[17]HUANG W. An assessment of the Fe-Mn system[J]. Calphad,1987,11(2):183-186.
[18]CONNETABLE D,LACAZE J,MAUGIS P,et al. A Calphad assessment of Al-C-Fe system with theκcarbide modelled as an ordered form of the fcc phase[J]. Calphad,2008,32(2):361-370.
[19]ANDERSSON J O. A thermodynamic evaluation of the Fe-Cr-C system[J]. Metallurgical and Materials Transactions A,1988,19(3):627-636.
[20] KHVAN A, HALLSTEDT B, BROECKMANN C. A Thermodynamic evaluation of Fe-Cr-C system[J]. Calphad,2014,46(3):24-33.
[21] LEE B J. A thermodynamic evaluation of the Fe-Cr-Mn-C system[J]. Zeitschrift Fur Metallkunde,1993,24(5):1017-1025.
[22]LEE B J. On the stability of Cr carbides[J]. Calphad,1992,16(2):121-149.
[23]KAJIHARA M,HILLERT M. Thermodynamic evaluation of the Cr-Ni-C system[J]. Metallurgical and Materials Transactions A,1990,21(10):2777-2787.
[24] THORPE W R,CHICCO B. The Fe-rich corner of the metastable C-Cr-Fe liquidus surface[J]. Metallurgical and Materials Transactions A,1985,16(9):1541-1549.
[25]ISHIDA K,OHTANI H,SATOH N,et al. Phase equilibria in Fe-Mn-Al-C alloys[J]. Transactions of the Iron&Steel Institute of Japan,1990,30(8):680-686.