摘要
研究了脉冲电流对４５钢淬火裂纹的修复作用结果表明，脉冲电流显著提高有裂纹的马氏体材料的强度和塑性，但硬度降低不多脉冲电流处理后，裂纹周围的组织发生了显著变化，对裂纹钝化有利探讨了裂纹在脉冲电流作用下的愈合效应，说明电流。
The influence of electric current pulse on the damage of 45 steel was studied. The results showed that electric current pulse can substantially increase the strength and ductili.ty of the damaged material with a little decrease of the martensite hardness. After the treatment of electric current pulse, the microstructure around the crack was modified, and the new microstructure can prevent the crack from growing. The healing effect of crack with electric current pulse was discussed. It was thought that electric current, temperature and thermal compressive stress were the main possible factors causing the healing effect.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2000年第1期29-36,共8页
Chinese Journal of Materials Research
基金
国家自然科学基金! 59889101
关键词
脉冲电流
结构变化
热压应力
45钢
淬火裂纹
electric current pulse, crack, microstructure transformation, healing effect. thermal compressive stress
