摘要
利用电子背散射衍射技术(EBSD)技术分析了两种不同热处理工艺下的TRIP800钢板取向分布、晶粒角度、显微织构与残余奥氏体的分布及其稳定性,并结合试验钢的力学性能进行了讨论。研究表明:两类试验退火钢的晶粒没有优势的取向分布,呈现较弱的织构;面心立方晶粒中的取向以{001}<100>与{011}<100>较多;残余奥氏体大多以分布在晶界上为主,但拉伸断裂后基本上消失,即产生了相变诱导塑性(TRIP)效应,而体心立方晶粒内部的残余奥氏体相对稳定,断裂后还有部分稳定的存在。
The grain orientation distribution,grain angle,microstructure texture and stability of retained austenite of a cold-rolled TRIP steel treated by different process were investigated by electron back scattering diffraction technique（EBSD）.The effect of heat treatment process on mechanical properties of the steel was discussed.The results show that grains of the annealed steel don t have prevailing orientation and exhibit weaker texture.The most orientation of fcc grains are {001}〈100〉 and {011}〈100〉; The retained austenite distributed at grain boundary disappears after tensile fracture, and transformation induced plasticity （TRIP）effect occurs. However, the retained austenite in grains is relative stability, and is observed after tensile test.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2009年第4期53-56,共4页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金资助项目(50804005)
北京市科技计划项目(D07010300700000)
