| 脉冲电流对45钢损伤的恢复作用 |
| |
| 引用本文： | 周亦胄,周本濂,郭晓楠,何冠虎,张弗天. 脉冲电流对45钢损伤的恢复作用[J]. 材料研究学报, 2000, 14(1): 29-36 |
| |
| 作者姓名： | 周亦胄 周本濂 郭晓楠 何冠虎 张弗天 |
| |
| 作者单位： | 1. 沈阳市 110015,中国科学院金属研究所
2. 沈阳市 110015,中国科学院金属研究所;中国科学院国际材料物理中心 |
| |
| 基金项目： | 国家自然科学基金! 59889101 |
| |
| 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，热效应及热压应力可能是诱发该效应的主要因素。
|
| 关 键 词： | 脉冲电流 结构变化 热压应力 45钢 淬火裂纹 |
| 文章编号： | 1005-3093(2000)01-0029-08 |
| 修稿时间： | 1999-02-04 |
REVERSING EFFECT OF ELECTRIC CURRENT PULSE ON THE DAMAGE OF 45 STEEL |
| |
| ZHOU Yizhou,ZHOU Benlian,GUO Xiaonan,HE Guanhu,ZHANG Futian. REVERSING EFFECT OF ELECTRIC CURRENT PULSE ON THE DAMAGE OF 45 STEEL[J]. Chinese Journal of Materials Research, 2000, 14(1): 29-36 |
| |
| Authors: | ZHOU Yizhou ZHOU Benlian GUO Xiaonan HE Guanhu ZHANG Futian |
| |
| Abstract: | 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. |
| |
| Keywords: | electric current pulse crack microstructure transformation healing effect. thermal compressive stress |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
