北京科技大学学报Issue(2)：189-193,5.DOI:10.13374/j.issn1001-053x.2014.02.008
高强TRIP钢的动态力学性能
Dynamic mechanical properties of high strength TRIP steel
摘要
Abstract
Using Si-Mn dual-phase ( DP) steel as a reference, the microstructural evolution and dynamic mechanical properties of Si-Mn transformation-induced plasticity steel ( TRIP) steel at the 600 MPa level and TRIP steel offering the ultimate tensile strength ( UTS) level up to 1000 MPa containing Al and Ni were investigated under high strain-rate deformation. It is found that the tensile strength increases with increasing strain rate and the fracture elongation increases due to adiabatic heating in the DP steel. In the TRIP steel, the tensile strength increases with increasing strain rate while the fracture elongation decreases at first and then increases. However, the ductility of the TRIP steel is relatively low at high strain rate since the gradual transformation effect of retained austenite is inhibited. The adiabatic heat produced during high strain-rate deformation is higher in the TRIP steel than in the DP steel, and it is suggested that this extra heat originates from the latent heat of martensitic transformation in the TRIP steel during dynamic deformation.关键词
高强钢/动态力学分析/显微组织/应变速率/绝热温升Key words
high strength steel/dynamic mechanical analysis/microstructure/strain rate/adiabatic heating分类
矿业与冶金引用本文复制引用
朱超群,徐超,何燕霖,朱娜琼,李麟..高强TRIP钢的动态力学性能[J].北京科技大学学报,2014,(2):189-193,5.基金项目
国家重点基础研究发展计划资助项目(2010CB630802) （2010CB630802）
上海大学材料学院一流学科建设项目 （）
