低碳钢临界奥氏体区的变形行为
Deformation Behavior of Low Carbon Steel
摘 要
在Gleeble-3500型热模拟试验机上对Q235钢进行了单向压缩试验,研究了不同温度下低碳钢的变形特征以及形变诱导铁素体的演变行为和在保温过程中的变化.结果表明：降低变形温度有利于低碳钢的组织细化,但变形温度低于Ar3时,得到混晶组织,并使珠光体成条状分布;随着变形的进行,形变诱导铁素体首先在晶界形核,然后在相界上反复形核;铁素体数量随着应变量的增加而增加,但存在一个极限值;应变量较高时,将会发生铁素体的动态回复和再结晶;形变诱导铁素体在变形后的保温过程中发生了逆相变并伴随着铁素体晶粒的粗化.
形变诱导铁素体
动态再结晶
晶粒细化
low carbon steel
deformation induced transformation ferrite
dynamic recrystallization
grain refinement
Abstract
Hot compression tests of Q235 steel were performed using Gleeble-3500 tester.The deformation characters and the evolution of deformation induced transformation ferrite of low carbon steel were studied.The ferrite grain became finer as the deformation temperature was decreased,but mixed grain microstructure appeared when the deformation temperature was below Ar3.As the deformation progressed,ferrite nucleated first at austenite boundaries and then at the ferrite/austenite interface.The ferrite fraction increased as the strain increased up to a limit.The dynamic recrystallization of ferrite occurred at high strain.Isothermal holding after deformation led to an inverse transformation of ferrite and the corsing phenomenon of ferrite grain was observed.
中图分类号 TG111.5
所属栏目
基金项目
收稿日期 2004/12/19
修改稿日期 2005/3/14
网络出版日期
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备注裴新华(1973-),男,安徽铜陵人,工程师,硕士研究生.
引用该论文: PEI Xin-hua,WU Sheng-qin,HU Heng-fa,HUANG Xu-chuan. Deformation Behavior of Low Carbon Steel[J]. Materials for mechancial engineering, 2006, 30(4): 26～29
裴新华,吴申庆,胡恒法,黄绪传. 低碳钢临界奥氏体区的变形行为[J]. 机械工程材料, 2006, 30(4): 26～29
被引情况:
【1】王倩,杨忠民,吴春京, "变形量和变形后保温时间对Q235钢形变诱导铁素体逆相变的影响",机械工程材料 33, 12-15(2009)
【2】唐明华,刘志义,胡双开,邓彬,厉春元, "ZrC/奥氏体相界面形变诱导铁素体相变的研究进展",机械工程材料 33, 1-4(2009)
【3】李雯雯,张春玲,史东日,蔡大勇,廖波, "变形温度及压下量对SS400低碳钢显微组织的影响",机械工程材料 35, 20-22(2011)
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参考文献
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【2】Huang Y D,Yang W Y,Sun Z Q.Formation of ultrafine grained ferrite in low carbon steel by heavy or dual phase region[J].Journal of Materials Processing Technology,2002,134:19-25.
【3】杨忠民,赵燕.低温变形低碳钢超细铁素体的形成[J].金属学报,2000,36(10):1061-1066.
【4】Akihiko Kojima,Yoshiyuki Watanabe,Yoshio Terada,et al.Ferrite grain refinement by large reduction per pass in non-recrystallization temperature region of Austenite[J].ISIJ International,1996,36(5):603-610.
【5】王有铭,李曼云,韦光.钢材的控制轧制和控制冷却[M].北京:冶金工业出版社,1995.
【6】Hong Seung Chan,Lee Kyung Sub.Influence of deformation induced ferrite transformation on grain refinement of dual phase steel[J].Materials Science and Engineering,2002,A323:148-159.
【7】杨平,崔凤娥,傅云义,等.Q235碳素钢应变诱导相变中的应力-应变曲线分析[J].金属学报,2001,37(6):609-616.
【8】Hiroshi YADA,Chun-Ming LI,Hiroshi YAMAGATA.Dynamic γ→α transformation during hot deformation in iron-nickel-carbon alloys[J].ISIJ International,1996,36(2):200-207.
【9】Sun W P,Hawbolt E B.Comparison between static and metadynamic recrystallization-an application to the hot rolling of steels[J].ISIJ International,1997,37(10):1000-1008.
【10】杨平,张栋华,孙祖庆.Q235碳素钢超细铁素体在奥氏体内的形核[J].北京科技大学学报,2002,24(2):211-215.
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