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摘要: 应用锰铜压阻计测量了峰压为4.92 GPa的平面冲击波在LY12-M铝中的衰减规律,对试样进行了正电子寿命谱探测和维氏显微硬度测试,分析了位错等缺陷对冲击波非流体动力学衰减的影响,同时还对LY12-M铝的冲击硬化效应进行了探讨。Abstract: The attenuation of planar shock waves in LY12-M aluminum was measured with the manganin piezoresistive gages. The peak pressure of shock waves initially is 4.92 GPa. Both the positron lifetimes and the vickers microhardness were measured. The influences of dislocations and other crystal defects on the nonhydrodynamic attenuation of shock waves as well as the shock hardening effect in LY12-M aluminum are discussed.
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Key words:
- shock wave /
- shock hardening /
- positron annihilation dislocation /
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