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Microscopic mechanism and numerical calculation of electroplastic effect on metal's flow stress

机译:塑性作用对金属流动应力的微观机理及数值计算

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摘要

Based on the quantum theory and dislocation thermally activated plastic flow concept, the mechanism of electroplastic effect will be studied at a microscopic level. From the perspective of energy exchange between free electrons and metallic ions, the change in free energy of dislocation can be calculated using the quantum theory. According to the thermally activated strain rate equations, the relationship between electric current and strain rate could then be obtained. Eventually a new analytical formulation for the determination of flow stress in the electroplastic forming process will be derived to address the effect of electric current on the plastic deformation of metals. The results of this paper will help establish solid theoretical foundation for the accurate prediction of electroplastic forming process of metals.
机译:基于量子理论和位错热活化塑性流动概念,将在微观层面研究塑性效应的机理。从自由电子与金属离子之间的能量交换的角度,可以使用量子理论计算位错自由能的变化。根据热活化应变率方程,可以得到电流与应变率之间的关系。最终,将得出一种新的用于确定电铸成型过程中流动应力的分析公式,以解决电流对金属塑性变形的影响。本文的结果将为准确预测金属的塑性成形过程奠定坚实的理论基础。

著录项

  • 来源
    《Materials Science and Engineering》 |2013年第15期|410-413|共4页
  • 作者单位

    National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao 066004, China ,The College of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China;

    National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao 066004, China ,The College of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China;

    The College of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China ,Luoyang Engineering and Research Institute for Nonferrous Metals Processing, 471003, China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Electroplastic effect; Thermal activation; Dislocation; Flow stress;

    机译:塑性效应;热活化;错位;流应力;

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