弛豫-析出-控制相变工艺生产热轧TRIP钢的显微组织与力学性能
Microstructure and Mechanical Properties of Hot Rolled TRIP Steel Produced by Relaxation-Precipitation-Phase Transformation Technology
摘 要
采用扫描电镜、X射线衍射仪、透射电镜和拉伸试验机等, 研究了通过弛豫-析出-控制相变工艺制备的热轧TRIP钢显微组织与力学性能。结果表明: 通过对轧后TRIP钢在弛豫阶段保温时间的控制可准确得到设定比例的铁素体; 在铁素体量较多, 贝氏体量较少的情况下, 较强的TRIP效应使得试验钢的抗拉强度并没有下降; 较多的残余奥氏体和较高的残余奥氏体力学稳定性, 使得热轧TRIP钢的强度和塑性得到良好匹配。
TRIP钢
弛豫-析出-控制相变技术
残余奥氏体
hot rolling
TRIP steel
relaxation-precipitation-phase transformation technology
residual austenite
Abstract
By means of scanning electron microscopy, X-ray diffraction, transmission electron microscopy and tensile tester, the microstructure and mechanical properties of hot rolled transformation-induced plasticity (TRIP) steels which were prepared through relaxation-precipitation-phase transformation technology were investigated. The results show that a accurate setting proportion of ferrite could be obtained by controlling the holding time during relaxation after rolled. It was also found that tensile strength did not decline as a result of stronger TRIP effect in the case of larger amount of ferrite and less bainite. Because of more residual austenite and high mechanical stability of the residual austenite, strength and ductility were well matched in hot-rolled TRIP steels.
中图分类号 TG335.3
所属栏目
基金项目 国家“十一五”科技支撑计划项目(2006BAE03A06); 北京市科委重大项目(D07010300700701)
收稿日期 2010/6/18
修改稿日期 2011/2/15
网络出版日期
作者单位点击查看
备注张明明(1983-), 男, 河南项城人, 硕士研究生。
引用该论文: ZHANG Ming-ming,ZHAO Ai-min,ZHAO Zheng-zhi,GAO Xu-tao,ZHANG Yu-guang. Microstructure and Mechanical Properties of Hot Rolled TRIP Steel Produced by Relaxation-Precipitation-Phase Transformation Technology[J]. Materials for mechancial engineering, 2011, 35(7): 71～74
张明明,赵爱民,赵征志,高绪涛,张宇光. 弛豫-析出-控制相变工艺生产热轧TRIP钢的显微组织与力学性能[J]. 机械工程材料, 2011, 35(7): 71～74
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参考文献
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【2】MINTZ B. Hot dip galvanizing of transformation induced plasticity and other intercritically annealed steels[J].Int Materials Review, 2001, 46(4): 169-197.
【3】HANZAKI A Z, HODGSON P D, YUE S. Hot deformation characteristics of Si-Mn TRIP steels with and without Nb microalloy additions[J].ISIJ Int, 1995, 35(3): 324-331.
【4】GEORGES C, GODET S, JACQUES P J. Development of high performance Nb-added hot rolled bainitic steels presenting a TRIP effect[J].Materials Science Forum, 2005, 500/501: 437-444.
【5】马世良.金属X射线衍射学[M].西安: 西北工业大学出版社, 1987.
【6】李玉兰.真应力-真应变的定义及其力学特征[J].重庆大学学报: 自然科学版, 2001, 24(3): 58-60.
【7】徐祖耀.贝氏体相变与贝氏体[M].北京: 科学出版社, 1991.
【8】方鸿生.贝氏体相变[M].北京: 科学出版社, 1999.
【9】翁宇庆.超细晶钢-钢的组织细化理论与控制技术[M].北京: 冶金工业出版社, 2003.
【10】朱丽娟, 吕义.TRIP钢相变诱发塑性的影响因素研究[J].汽车工艺与材料, 2008(12): 46-49.
【11】JACQUES P J, PETEIN A, HARLET P. Improvement of mechanical properties through concurrent deformation and transformation: new steels for 21st century[C]//TRIP-International Conference on TRIP Aided High Strength Ferrous Alloys. Aachen: WMG, 2001.
【12】TOMOTA Y, TOKUDA H, ADAEHI Y, et al. Tensile behavior of TRIP-aided multi-phase steels studied by in situ neutron diffraction[J].Aeta Materialia, 2004, 52(20): 5737-5745.
【13】KRIZAN D, ANTONISSEN J, BARBE L, et al. Properties of austenite in micro-alloyed C-Mn-Al-Si-P TRIP steels[C]//Baker M A.45th MWSP.Chicago: David L Kanagy, 2003.
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