周开春,赵爱民,尹鸿祥,赵征志,丁然,丁箫楠

• 1:北京科技大学冶金工程研究院

摘要(Abstract)：

应用CCT-AY-Ⅱ型钢板连续退火机、X射线衍射、扫描和透射电镜、EBSD和拉伸试验等研究了TRIP钢(0.2C-1.5Si-2Mn-0.43Cu-0.26Ni)贝氏体区(350~470℃)等温处理对组织和性能的影响。结果表明:在贝氏体等温温度为410℃时,TRIP钢综合力学性能最佳,抗拉强度达到1088 MPa,伸长率16.88%,强塑积18365 MPa·%。残留奥氏体在TRIP钢中存在的形态有粗大块状、薄膜状和细小粒状。其中薄膜状的残留奥氏体属于亚稳奥氏体,形变过程中发生渐进式转变,极大地发挥TRIP效应。残留奥氏体中的碳含量和薄膜厚度是决定残留奥氏体稳定性的关键因素。

关键词(KeyWords)： TRIP钢;亚稳奥氏体;贝氏体等温温度;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51271035);; 教育部高等学校博士学科点专项科研基金(20110006110007)

作者(Author): 周开春,赵爱民,尹鸿祥,赵征志,丁然,丁箫楠

DOI: 10.13289/j.issn.1009-6264.2015.10.021

参考文献(References)：

• [1]Wang Y,Zhang K,Guo Z,et al.A new effect of retained austenite on ductility enhancement in high strength bainitic steel[J].Materials Science and Engineering A,2012,552:288-294.
• [2]赵征志,尹鸿祥,赵爱民,等.钒微合金化对TRIP钢组织和性能的影响[J].材料热处理学报,2014,35(3):133-137.ZHAO Zheng-zhi,YIN Hong-xiang,ZHAO Ai-min,et al.Effect of V microalloying on microstructure and mechanical properties of TRIP steel[J].Transactions of Materials and Heat Treatment,2014,35(3):133-137.
• [3]张志勤,黄维,高真凤.汽车用第3代先进高强度钢的研发进展[J].特殊钢,2013(1):16-21.ZHANG Zhi-qin,HUANG Wei,GAO Zhen-feng.Progress on research and development of 3rd generation of advanced high-strength steel for car[J].Special Steel,2013(1):16-21.
• [4]梅悦旎.相变诱发塑性钢的研究现状与发展[J].江汉石油职工大学学报,2013(4):54-57.MEI Yue-ni.On the current research and development of transformation induced plasticity steel[J].Journal of Jianghan Petroleum University of Staff and Worker,2013(4):54-57.
• [5]张晓刚.近年来低合金高强度钢的进展[J].钢铁,2011(11):1-9.ZHANG Xiao-gang.Development of high strength low alloy steel in recent years[J].Iron and Steel,2011(11):1-9.
• [6]Jacques P J.Transformation-induced plasticity for high strength formable steels[J].Current Opinion in Solid State and Materials Science,2004,8(3/4):259-265.
• [7]李光瀛,马鸣图.我国汽车板生产现状及展望[J].轧钢,2014(4):22-32.LI Guang-ying,MA Ming-tu.Auto steels production in China-status and prospect[J].Steel Rolling,2014(4):22-32.
• [8]Chiang J,Lawrence B,Boyd J D,et al.Effect of microstructure on retained austenite stability and work hardening of TRIP steels[J].Materials Science and Engineering A,2011,528(13/14):4516-4521.
• [9]Pereloma E V,Russell K F,Miller M K,et al.Effect of pre-straining and bake hardening on the microstructure of thermomechanically processed CMn Si TRIP steels with and without Nb and Mo additions[J].Scripta Materialia,2008,58(12):1078-1081.
• [10]BlondéR,Jimenez-Melero E,Zhao L,et al.High-energy X-ray diffraction study on the temperature-dependent mechanical stability of retained austenite in low-alloyed TRIP steels[J].Acta Materialia,2012,60(2):565-577.
• [11]Jiao S,Hassani F,Donaberger R L,et al.The effect of processing history on a cold rolled and annealed Mo-Nb microalloyed TRIP steel[J].ISIJ International,2002,42(3):299-303.
• [12]奚琰,赵金龙,史文,等.贝氏体区等温处理对超高强度TRIP钢组织及力学性能的影响[J].上海金属,2011(1):34-38.XI Yan,ZHAO Jin-long,SHI Wen,et al.Effect of isothermal bainite treatment on microstructure and mechanical properties of ultra high strength trip steel[J].Shang Hai Metals,2011(1):34-38.
• [13]王艾青,赵爱民,张宇光.含铝TRIP钢组织和性能的研究[J].钢铁研究,2011(3):29-32.WANG Ai-qing,ZHAO Ai-min,ZHANG Yu-guang.Investigation on microstructures and mechanical properties of Al TRIP steel[J].Research on Iron&Steel,2011(3):29-32.
• [14]王超,丁桦,姚春发,等.合金元素及热处理工艺对1000MPa级TRIP钢性能的影响[J].东北大学学报:自然科学版,2012,33(7):953-957.WANG Chao,DING Hua,YAO Chun-fa,et al.Effects of alloying elements and heat treatment on mechanical properties of 1000 MPa grade TRIP steels[J].Journal of Northeastern University:Natural Science,2012,33(7):953-957.
• [15]许云波,侯晓英,王业勤,等.快速加热连续退火对超高强TRIP钢显微组织与力学性能的影响[J].金属学报,2012(2):176-182.XU Yun-bo,HOU Xiao-ying,WANG Ye-qin,et al.Effect of rapid heating continuous annealing on microstructure and mechanical properties of ultra high-strengh TRIP-aided steel[J].Acta Metallurgica Sinica,2012(2):176-182.
• [16]Kim S,Gil Lee C,Lee T,et al.Effect of Cu,Cr and Ni on mechanical properties of 0.15 wt.%C TRIP-aided cold rolled steels[J].Scripta Materialia,2003,48(5):539-544.
• [17]李振,赵爱民,曹佳丽,等.高强中锰TRIP钢的残余奥氏体含量及其稳定性[J].机械工程材料,2012(1):62-64.LI Zhen,ZHAO Ai-min,CAO Jia-li,et al.Content and stability of retained austenite in high strength medium-Mn TRIP steel[J].Materials for Mechanical Engineering,2012(1):62-64.
• [18]王作成,景财年,肖宁宁,等.添加0.5%铜及贝氏体化对0.2C-1.5Mn-1.5Si形变诱发塑性(TRIP)钢板组织和力学性能的影响[J].金属热处理,2006,31(11):38-41.WANG Zuo-cheng,JING Cai-nian,XIAO Ning-ning,et al.Effects of 0.5%copper addition and austempering on microstructures and mechanical properties of 0.2C-1.5Mn-1.5Si TRIP steel sheets[J].Heat Treatment of Metals,2006,31(11):38-41.
• [19]景财年,刘在学,王作成,等.CMn Al Cu-TRIP钢组织和力学性能研究[J].材料热处理学报,2009,30(2):67-70.JING Cai-nian,LIU Zai-xue,WANG Zuo-cheng,et al.Microstructure and mechanical properties of CMn Al Cu-TRIP steel[J].Transactions of Materials and Heat Treatment,2009,30(2):67-70.

文章评论(Comment)：