电塑性效应及其应用  

Electroplasticity and Its Applications

作　　者：郑明新[1] 张人佶[2] 朱永华[2] 张华堂[2] 唐国翌[2] 

机构地区：[1]清华大学机械工程系,北京市100084 [2]清华大学,北京市100084

出　　处：《中国机械工程》1997年第5期91-94,共4页China Mechanical Engineering

基　　金：国家自然科学基金!59475056

摘　　要：评述显示电塑性效应的最早实验，电塑性研究的新近信息和电塑性技术的应用前景。利用高密度电流脉冲刺激导致的电塑性现象，是一种综合物理效应，它主要由电子对位错的有效推动作用引起，焦尔热效应、磁压缩效应、电流集肤效应、电子润滑剂效应起辅助作用。与传统拨丝工艺比较，电塑性拨丝显著降低拔制力，增大金属的塑性，改进丝的质量和性能，减免中间退火，强化生产，提高生产力，节约能源，改善生态环境，是一种有发展前途的新的拔丝工艺。The prime experiments first show-ing the electroplastic effect, the latest informa-tion concerning studies on electroplasticity andthe application prospects of electroplastic tech-nologies were briefly reviewed. Theoretically,electroplasticity resulting from the stimulationby high density electric current pulses is a conse-quence of combined physical effects, it stems ba-sically from an active electron push on movingdislocations during plastic flow and the Jouleheating. pinch, skin and electron lubrication ef-fects just play a supplementary role. Comparedwith the traditional wire drawing, electroplasticone can lead to reducing drawing force, enhanc-ing metal's plasticity, advancing wire's qualityand properties, diminishing or eliminating pro-cess annealing, intensifying production, raisingproductivity, economizing on electricity, improv-ing ecological conditions,and so,is a prospective-ly new wire drawing technology.

关 键 词：金属 电塑性 高密度电流脉冲 电子位错 拔丝 

分 类 号：TG111.7[金属学及工艺—物理冶金]