| 脉冲电流作用下炮钢裂纹尖端的金相组织分析 |
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| 引用本文： | 范伏生,郑坚.脉冲电流作用下炮钢裂纹尖端的金相组织分析[J].燕山大学学报,2007,31(1):16-18. |
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| 作者姓名： | 范伏生 郑坚 |
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| 作者单位： | 军械工程学院,火炮工程系,河北,石家庄,050003 |
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| 摘 要： | 利用材料的电热效应对炮钢进行裂纹止裂实验,并对裂纹尖端材料进行金相组织分析.结果表明:对带有裂纹试件进行脉冲放电裂纹止裂,裂纹尖端处瞬间形成微小焊口,尖端附近组织发生相变,不仅可以达到止裂的目的,还提高了材料的抗断裂能力.
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| 关 键 词： | 电热效应 脉冲放电 裂纹 止裂 金相组织分析 |
| 文章编号： | 1007-791X(2007)01-0016-03 |
| 修稿时间： | 2006年8月24日 |
Analysis of microstructure in gunsteel crack tip arrested by pulse current |
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| FAN Fu-sheng,ZHENG Jian.Analysis of microstructure in gunsteel crack tip arrested by pulse current[J].Journal of Yanshan University,2007,31(1):16-18. |
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| Authors: | FAN Fu-sheng ZHENG Jian |
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| Abstract: | Using theory of electro-thermal effects, tests of crack arrest were executed on gunsteel. And microstructure in crack tip was analyzed. The results show that a small welded joint can be formed at crack tip when impulsive discharge was applied, and phase transformation was taken place near the crack tip. As a result, the crack propagation is prevented, and the crack resistance is increased. |
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| Keywords: | electro-thermal effects impulsive discharge crack crack arrest analysis of microstructure |
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