Mechanical Properties and Retained Austenite Transformation Mechanism of TRIP-Aided Polygonal Ferrite Matrix Seamless Steel Tube

作     者：ZHANG Ming-ya ZHU Fu-xian ZHENG Dong-sheng 

作者机构：State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110819 Liaoning China 

出 版 物：《Journal of Iron and Steel Research(International)》 (钢铁研究学报（英文版）)

年 卷 期：2011年第18卷第8期

页      面：73-78页

核心收录：

学科分类：08[工学] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0703[理学-化学] 080201[工学-机械制造及其自动化] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：Item Sponsored by Key Project of National Eleventh-Five Year Research Program of China(2006BAE03A08) Fundamental Research Funds for Central Universities of China(N100607002) 

主　　题：TRIP steel retained austenite austempering heat treatment 

摘      要：Through the comparison of microstructure for polygonal ferrite （PF） matrix transformation induced plasticity （TRIP） seamless steel tube at different positions before and after tensile rupture, the transformation behavior of retained austenite （RA） was studied. The results showed that there were no yield points in tensile process and the splendid elongation and tensile strength were contributed by the uniform ferrite/bainite grains and the transformation of RA. The stability of RA was to some extent in inverse proportion with the ability of transformation induced plas ticity. The coarse retained austenite located in ferrite and ferrite/bainite laths were all transformed into martensite during the tensile process.