Effect of Explosion Shock Waves on the Oscilloscopic Impact Properties of 16MnR Steel
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摘要: 采用示波冲击试验机对经单面爆炸处理和双面爆炸处理的16MnR钢板的冲击性能与未处理钢板的冲击性能进行了比较研究.结果表明:单面爆炸处理能提高材料的冲击总功,能提高材料0~20 ℃的裂纹萌生功和-20~-40 ℃的裂纹扩展功,但对裂纹扩展功与冲击总功之比没有多大影响;双面爆炸反而降低了材料各方面的冲击性能.试样冲击断口特征证实了不同处理状态下材料所具有的这种差别.Abstract: Oscilloscopic impact properties of 16MnR steel plates treated by single-side or double-side explosion shock waves were studied and compared with untreated ones.Single-side explosion treatment could improve the total impact energy (Et),especially,crack initiation energy (Ei) of 16MnR steel at 0-20 ℃ and crack growth energy (Ep) at -20 to-40 ℃,but has little effect on the ratio of Ep/Et.The double-side explosion treatment decrease all kinds of impact energy.These phenomena have been proved by the characteristics from SEM fractographs.
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Keywords:
- 16MnR steel plate /
- explosion shock wave treatment /
- impact property
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