Residual Stress Removal Under Pulsed Electric Current

作     者：Siqi Xiang Xinfang Zhang Siqi Xiang;Xinfang Zhang

作者机构：State Key Laboratory of Advanced MetallurgySchool of Metallurgical and Ecological EngineeringUniversity of Science and Technology BeijingBeijing 100083China 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2020年第33卷第2期

页      面：281-289页

核心收录：

学科分类：0817[工学-化学工程与技术] 0806[工学-冶金工程] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0802[工学-机械工程] 0703[理学-化学] 0811[工学-控制科学与工程] 

基　　金：financially supported by the National Natural Science Foundation of China (Nos. 51874023, 51601011 and U1860206) the Fundamental Research Funds for the Central Universities, Recruitment Program of Global Experts 

主　　题：Electroplastic Residual stress Dislocation movement Phenomenological equation 

摘      要：The effect of a pulsed electric current on the residual stress evolution of metal materials has been *** was found that the surface and internal residual stresses in the as-quenched samples were reduced dramatically by electropulsing.A large number of experimental data show that the residual stress reduction is proportional to the initial residual stress and related to the material properties and electropulsing *** the combined actions of drift electrons,Joule heating,and residual stress,the dislocation mobility was enhanced,resulting in plastic strain and the decrease in residual *** electrons played a unique role in the electropulsing treatment,acting as an additional force pushing dislocations *** dislocations ultimately accumulated at a grain boundary,forming a parallel ***,the phenomenological equation of the residual stress evolution under electropulsing was derived from the experimental data.