冷轧304不锈钢的马氏体逆相变及奥氏体再结晶行为  

Behavior of martensite reverse transformation and austenite recrystallization of cold-rolled 304 stainless steel

作　　者：张梅 孙国胜[1,2] 秦岽烊 杜林秀 Zhang Mei;Sun Guosheng;Qin Dongyang;Du Linxiu(State Key Laboratory of Rolling Automation,Northeastern University,Shenyang Liaoning 110819,China;School of Materials Science and Engineering,Nanjing University of Science and Technology,Nanjing Jiangsu 210014,China)

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110819 [2]南京理工大学材料科学与工程学院,江苏南京210014

出　　处：《金属热处理》2021年第7期51-55,共5页Heat Treatment of Metals

摘　　要：将冷轧304不锈钢在750~800℃退火78~127 s,采用光学显微镜(OM)、扫描电镜(EBSD)、X射线衍射仪(XRD)、透射电镜(TEM)等手段探究其组织演变行为并测定其拉伸性能。结果表明:在等温退火过程中,试验钢内发生扩散型和切变型马氏体逆相变和奥氏体的再结晶,随着退火温度的升高和保温时间的延长,马氏体逆相变和奥氏体再结晶逐渐完成,试验钢的屈服强度下降,断后伸长率提高。Cold-rolled 304 stainless steel was annealed at 750-800℃for 78-127 s,the microstructure evolution was investigated by means of metallographic microscope(OM),scanning electron microscope(EBSD)and X-ray diffractometer(XRD),and the tensile properties were determined.The results show that diffusion-type and shear-type martensite reverse transformation and austenite recrystallization occur in the tested steel during isothermal annealing.With the increase of annealing temperature and holding time,the reverse transformation of martensite and austenite recrystallization are gradually completed,the yield strength of the tested steel decreases but the elongation after fracture increases.

关 键 词：奥氏体不锈钢 马氏体逆相变 再结晶行为 拉伸性能 

分 类 号：TG142.25[一般工业技术—材料科学与工程]