变形对奥氏体→铁素体相变影响的热力学数值模拟
Thermodynamic Numerical Simulation of the Effect of Deformation on Austenite to Ferrite Transformation
摘 要
根据热力学理论,借助Thermo-Calc软件,对不同成分钢材的变形奥氏体→铁素体相变进行了热力学数值分析,并在Gleeble 2000热模拟试验机上进行了压缩变形试验,将试验结果与模拟结果进行了对比.结果表明:变形使奥氏体→铁素体平衡转变温度升高,相变的驱动力增大,促进了转变的发生:变形使奥氏体相中碳含量上升:模拟结果与试验结果相符.
奥氏体
相变
热力学
deformation
austenite
transformation
thermodynamics
Abstract
According to thermodynamic theory,thermodynamic numerical analysis about the transformation of deformed austenite to ferrite of steels with different compositions was carried out by using the software Thermo-Calc.The compression tests were performed on thermal simulator Gleeble 2000 and the experimental results were compared with calculated results.The results show that the deformation could enhance the equilibrium transformation temperature of austenite to ferrite,increase the transformation driving force,which accelerated the transformation.The deformation could also increase the carbon content in austenite phase.The simulated results were in agreement with experimental ones.
中图分类号 TG151.2
所属栏目 物理模拟与数值模拟
基金项目 唐山市科技发展计划资助项目(07160202B-3)
收稿日期 2009/2/1
修改稿日期 2009/8/11
网络出版日期
作者单位点击查看
备注贠冰(1968-),女,山西平陆人,工程师,博士.
引用该论文: YUN Bing,DONG Xiao-lei,LIU Xing-zhong,ZHANG Xi-jia,MA Zhi-hao. Thermodynamic Numerical Simulation of the Effect of Deformation on Austenite to Ferrite Transformation[J]. Materials for mechancial engineering, 2010, 34(3): 84～87
贠冰,董小雷,刘新忠,张习加,马志好. 变形对奥氏体→铁素体相变影响的热力学数值模拟[J]. 机械工程材料, 2010, 34(3): 84～87
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参考文献
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【2】BENGOCHEA R,LPEZ B,GUTIRREZ I.Microstructural evolution during the austenite to ferrite transformation from deformed austenite[J].Metall Mater Trans A,1998,29(2):417-422.
【3】KOJIMA A,WATANABE Y,TERADA Y,et al.Ferrite grain refinement by large reduction per pass in non-recrystallization temperature region of austenite[J].ISIJ International,1996,36(5):603-609.
【4】魏伟,李龙,杨贵玲,等.热变形及工艺参数对C-Mn钢过冷奥氏体转变的影响[J].材料与冶金学报,2004,3(4):308-312.
【5】郭振,温永红,胡水平,等.F40高强船板钢组织中针状铁素体形成及细化机制研究[J].热加工工艺,2008,37(2):38-41.
【6】张淑兰,孙新军,董瀚,等.变形过程中超低碳碳素钢微观组织转变[J].金属热处理,2006,31(11):35-37.
【7】余驰斌,颜飞,赵刚,等.奥氏体变形及其对连续冷却相变的影响[J].钢铁钒钛,2004,25(2):23-26.
【8】阴树标,刘清友,张志波,等.热变形参数对含铌钢奥氏体未再结晶区变形相变的影响[J].钢铁,2008,43(2):81-85.
【9】刘振宇,王国栋,张强.形变奥氏体→铁素体的热力学计算[J].钢铁研究学报,1994,6(4):31-34.
【10】ANDERSSON J O,HELANDER T,HOGLUND L,et al.Thermo-calc & DICTRA,computational tools for materials science[J].CALPHAD: Computer Coupling of Phase Diagrams and Thermochemistry,2002,26(2):273-12.
【11】何燕霖,李麟,叶平,等.Thermo-Calc和DICTRA软件系统在高性能钢研制中的应用[J].材料热处理学报,2003,24(4):73-77.
【12】戚正风.固态金属中的扩散与相变[M].北京:机械工业出版社,1998.
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