Transactions of Materials and Heat Treatment

Title：Research on the properties of transformation induced by martensite deformation of stainless steel 201

Authors： Zhang Hao Xia Qinxiang Fang Ming Zhou Chi

Unit： South China University of Technology Guangdong Linkfair Group Co. Ltd.

KeyWords： stainless steel 201 uniaxial tensile test martensitic transformation deformation temperature strain rate aging cracking

ClassificationCode：TG141

year,vol(issue):pagenumber：2017,42(1):105-111

Abstract：

Martensitic transformation occurs during the plastic deformation of stainless steel 201, changes the mechanical properties of material and leads stainless steel 201 to become aging cracking after deep drawing. In order to find out the reason of aging cracking induced by martensitic transformation for stainless steel 201, the influences of martensitic transformation characteristics, temperature and strain rate on martensitic transformation were mainly studied by uniaxial tensile test. The results show that martensitic transformation increases with the increase of strain, and the increase of deformation temperature and strain rate suppress the martensitic transformation. When the deformation temperature is up to 100 ℃, there will be no longer martensitic transformation. At the same temperature, the yield strength and yield ratio increase, while the elongation decreases with the increase of strain rate. Due to martensitic transformation, the material tensile strength shows an opposite variation below 50 ℃and above 100 ℃. Therefore, the best plasticity of stainless steel 201 is at the strain rate of 0.001 s-1 at different temperatures.

Funds：

国家自然科学基金资助项目（51375172）；广东省自然科学基金资助项目（2016A030313519）

张豪（1991-），男，硕士研究生 E-mail：460278249@qq.com 通讯作者: 夏琴香(1964-),女，博士,教授 E-mail：meqxxia@scut.edu.cn

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