Anisotropic Electroplastic Effects on the Mechanical Properties of a Nano-Lamellar Austenitic Stainless Steel  

作　　者：Y.R.Ma H.J.Yang D.D.Ben X.H.Shao Y.Z.Tian Q.Wang Z.F.Zhang 

机构地区：[1]Shi-changxu Innovation Center for Advanced Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang,110016,China [2]School of Materials Science and Engineering,University of Sciences and Technology of China,Hefei,230026,China [3]Shenyang National Laboratory of Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang,110016,China [4]Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education),School of Materials Science and Engineering,Northeastern University,Shenyang,110016,China

出　　处：《Acta Metallurgica Sinica(English Letters)》2021年第4期534-542,共9页金属学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grants No.51501196,51975552 and 50711007);the IMR foundation for“Young merit scholars”;the Youth Innovation Promotion Association CAS(No.2017235);the LiaoNing Revitalization Talents Program under Grant No.XLYC1808027。

摘　　要：Effects of electropulsing treatment(EPT)on the microstructural evolution and mechanical properties of a cold-rolled 316 L austenitic stainless steel with nano-lamellar structure were investigated.The EPT experiments were carried out with the electric current direction along the rolling direction(RD)and the transverse direction(TD)of the samples,respectively.Significant anisotropic electroplastic effects for the RD and TD specimens,i.e.,reduced hardness/strength and enhanced ductility,were obtained owing to the different recrystallization behaviors of the RD and TD specimens during EPT.The RD specimens after EPT with larger recrystallized grain size and higher volume fraction of recrystallization show lower strength and higher elongation than that of the TD specimens.The main reason might be attributed to the change of the current direction in the two kinds of samples,which results in the different sensitivity of the microstructures to thermal and athermal effects during EPT.

关 键 词：Stainless steel Electroplastic effect ELECTROPULSING RECRYSTALLIZATION ANISOTROPY Strength PLASTICITY 

分 类 号：TG142.71[一般工业技术—材料科学与工程]