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介绍了某些材料在高应变速率条件下形成的绝热剪切带的微观结构中包含着极其细微的动态再结晶晶粒这一现象，指出两种传统的动态再结晶机制都无法解释这一现象，阐述了目前对这种新动态再结晶机制的研究进展及研究这种机制的重大现实意义。
The phenomenon that some microstructures of adiabatic shear bands formed at high strain rates contain extremely fine dynamic recrystallized grains is described. It is pointed out that neither of the two conventional dynamic recrystallization mechanisms can explain this phenomenon , Expounds the current research progress on this new dynamic recrystallization mechanism and its great practical significance to study this mechanism.