Microstructure and texture evolution of nonoriented silicon steel during the punching process  

作　　者：Xiang Fang Wei Wang François Brisset Anne-Laure Helbert Thierry Baudin 

机构地区：[1]School of Automotive Engineering,Wuhan University of Technology,Wuhan 430070,China [2]Hubei Key Laboratory of Advanced Technology for Automotive Components,Wuhan University of Technology,Wuhan 430070,China [3]Hubei Collaborative Innovation Center for Automotive Components Technology,Wuhan University of Technology,Wuhan 430070,China [4]Hubei Research Center for New Energy&Intelligent Connected Vehicle,Wuhan University of Technology,Wuhan 430070,China [5]Institut de Chimie Moléculaire et des Matériaux d’Orsay,UniversitéParis-Saclay,CNRS,91405 Orsay,France

出　　处：《International Journal of Minerals,Metallurgy and Materials》2022年第11期2064-2071,共8页矿物冶金与材料学报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (No. 51801141);the Fundamental Research Funds for the Central Universities (No. 2019IVB015);the support from the 111 Project (No. B17034);the Innovative Research Team Development Program of the Ministry of Education of China (No. IRT_17R83)

摘　　要：The iron core of a motor is mainly manufactured from rolled nonoriented silicon steel using a punching process that leads to deformation and texture evolution at the cutting edge.According to this process,circular samples of nonoriented silicon steel were prepared by punching using blunt punch tools.In this work,two positions along the rolling and transverse directions at the cutting edge were analyzed.The main mechanisms of deformation for both positions are dislocation slip and formation of shear bands.These two mechanisms lead to similar texture evolutions for both positions.The dislocation slip leads to the formation of the{221}<uvw>component in the unbending area(200μm away from the cutting edge)and intermediate continuum-bent area.Additionally,the evolution of the texture from the{111}γfiber to the{110}fiber was observed at the extremity of the cutting edge with the formation of shear bands.

关 键 词：MICROSTRUCTURE TEXTURE nonoriented silicon steel PUNCHING 

分 类 号：TM275[一般工业技术—材料科学与工程] TG386[电气工程—电工理论与新技术]