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| Application of Pulse Electric Current in the Field of Plastic Processing |
| WANG Guofeng, LI Xiao, LI Danfeng, ZHANG Kaifeng |
| (School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China) |
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Abstract The introduction of electric current to materials will bring some obviously positive effects on mechanical
properties and microstructure. In the term of mechanical properties, the flow stress will decrease and the capacity for plasticity
will be improved. At the same time, microcrack blunt because of the influence of electric current. As for microstructure,
it accelerates recrystallization and refines grains, resulting in the change of texture. Materials heated directly by electric
current lead to low energy consumption and the efficiency of forming rises. Electric current is applied in many plastic
forming techniques, such as stamping, rolling and superplastic forming. Nowaday, the main purpose of forming is energy
conservation and high efficiency, and electric current drives sophisticated manufacturing greatly, especially in the field of
aeronautics and astronautics. It is proved that electric current is worth in the field of plastic processing by many attempts of
scholars.
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2017, 
