Abstract

Powerful ultrasonic vibrations of a rigid body that arise during shock-wave loading are the result of the interaction of compression and unloading waves with the faces of the sample and with each other, which proceeds in the form of standing waves. Shock-wave ultrasound accompanies the process of localization of plastic deformation. It is shown that the duration of the vibration of the sample increases in comparison with the shock load time. The fast cooling of the metal inside the localization bands, the size of which does not exceed several tens of micrometers, indicates that the phase composition changes as a result of cold deformation.

中文翻译：

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应变本地化的超声振动的特异性

摘要

冲击波加载过程中产生的刚体的强大超声波振动是压缩波和卸载波与样品表面以及彼此之间相互作用的结果，压缩和卸载波以驻波的形式进行。冲击波超声伴随塑性变形的局部化过程。结果表明，样品的振动持续时间与冲击载荷时间相比有所增加。定位带内金属的快速冷却（其大小不超过几十微米）表明，相成分由于冷变形而改变。