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用微量炸药接触爆炸的方法,研究了钨合金93W─4Ni─3Fe在高加载率条件下的断裂特性,通过宏、微观观察,以及与静态断裂特性相比较,发现随着加载率的增加,钨─钨界面裂纹增加,致使钨合金的断口呈脆性状态。

A contact explosion technique is developed using PETN compact powder explosive to study the fracture behaviour of 93W-4Ni3Fe W alloy at high strain rates. The fractograph exhibits a strong feature of brittle type. This fact is because of greater increase in W-W fracture interface at high loading rates in comparison with the existing results in quasi-static test.Correspondent. LIU Xiaoping, Institute of Mechanics, Chinese Academy of Sciences, Beijing 10080

参考文献

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[3] LankfordJ,AndersonCEJr,BodnerSR.JMaterSciLett,1988
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