中文摘要：

有缩放 nano 的谷物的镍形状费用班机被 electroforming 技术，和变丑准备在超离频紧张率被爆炸爆炸执行。同样形成并且有缩放 nano 的谷物的 electroformed 镍形状费用班机的 deformed 以后微观结构借助于传播电子显微镜学被观察，并且谷物的取向分发被电子 backscattering 模式(EBSP ) 分析技术。在在在以超离频紧张的率的塑料变丑以后的蛞蝓的喷气碎片和恢复和再结晶的融化的现象在极其细小颗粒的镍形状费用班机被观察。研究证据证明那动态恢复和再结晶在塑料变丑起一个重要作用在超离频紧张率。

英文摘要：

Nickel shaped-charge liners with nano-sized grains were prepared by the electroforming technique, and the deformation at ultrahigh strain rate was performed by explosive detonation. The as-formed and post-deformed microstructures of electroformed nickel shaped-charge liners with nano-sized grains were observed by means of transmission electron microscopy, and the orientation distribution of the grains was analyzed by the electron backscattering pattern （EBSP） technique. The melting phenomenon in the jet fragment and the recovery and recrystallization in the slug after plastic deformation at ultrahigh-strain rate were observed in the ultrafine-grained nickel shaped-charge liners. The research evidence shows that dynamic recovery and recrystallization play an important role in plastic deformation at ultrahigh strain rate.