河北科技大学学报2025，Vol.46Issue(4)：434-442,9.DOI:10.7535/hbkd.2025yx04009
预拉伸对TRIP钢微观组织及成形性能的影响
Influence of pre-stretching on microstructure and formability of TRIP steel
摘要
Abstract
To study the effect of pre-deformation on martensitic transformation and microstructural evolution in transformation induced plasticity(TRIP)steels,and to investigate the forming ability of TRIP steels,the TRIP590 steel plate was selected as the testing material,and pre-stretching in the range of 0～0.12 was applied on two sizes of specimens(standard specimen and wide specimen).Tensile testing and microstructure observation were conducted on the pre-stretched specimens.The effect of pre-stretching on the anisotropy and bulging properties of wide specimens was analyzed.The results show that pre-stretching causes a certain degree of martensitic transformation in TRIP steel,and a larger pre-stretching produces more dislocations,bringing in increase in material strength and decrease in plasticity;The highest product of strength and elongation is obtained at pre-stretch of 0.02;The larger pre-stretch also has an effect on material anisotropy,and elongation of the 90°-oriented specimen is a litter higher;the peak load and cupping value gradually decrease with increase of pre-stretch.Moderate pre-stretching can improve the overall performance of the TRIP steel,while excessive pre-stretching reduces its formability,which provides reference for structure design and formability of TRIP.关键词
黑色金属及其合金/马氏体相变/TRIP钢/微观组织/预拉伸/杯突胀形Key words
ferrous metals and their alloys/martensite phase transformation/TRIP steel/microstructure/pre-stretching/cup bulging分类
矿业与冶金引用本文复制引用
刘坡,王润铮,黎旺,陈龙茂,马海坤,李青,韩鹏彪..预拉伸对TRIP钢微观组织及成形性能的影响[J].河北科技大学学报,2025,46(4):434-442,9.基金项目
国家自然科学基金(52401207) （52401207）
广西省自然科学基金(2020JJA160034) （2020JJA160034）
河北省重点研发计划项目(23311004D) （23311004D）
中央引导地方科技发展资金(246Z1020G) （246Z1020G）
