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 sam...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.展开更多
基金financially supported by the National Natural Science Foundation of China (No. 51801141)the Fundamental Research Funds for the Central Universities (No. 2019IVB015)+1 种基金the support from the 111 Project (No. B17034)the Innovative Research Team Development Program of the Ministry of Education of China (No. IRT_17R83)
文摘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.
