Abstract

The elastoplastic shock compression, unloading, and steplike shock compression of titanium at room temperature and in the vicinity of 600°C are measured. The dependences of the dynamic yield strength on the pressure of shock compression and temperature are determined, and the dependences of the strain rate in shock waves in the range 10⁵–10⁷ s^–1 on the shear stress and temperature are obtained. In contrast to the data obtained for fcc metals, the yield strength of titanium behind a shock wave is found to decrease. The decrease in the yield strength is thought to be caused by a decrease in the plastic flow stress during the growth of twins and their reversibility.

中文翻译：

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常温和高温下冲击波中钛的高速变形

摘要

在室温和600°C附近测量钛的弹塑性冲击压缩，卸载和阶梯状冲击压缩。确定了动态屈服强度对冲击压缩压力和温度的依赖关系，并获得了在10 ⁵ –10 ⁷ s ^-1范围内的冲击波应变率与剪切应力和温度的依赖关系。与从fcc金属获得的数据相反，发现冲击波后钛的屈服强度降低。屈服强度的降低被认为是由于孪晶生长过程中塑性流动应力的降低及其可逆性引起的。