绝热剪切是金属材料在高应变速率变形条件下常见的一种现象。
The adiabatic shearing phenomena were often found in metallic materials under high-strain, high-strain-rate deformation.
综述了高应变速率超塑材料及其变形机理和工业应用的最新进展。
The recent development of the high strain rate superplasticity(HSRS), its deformation mechanism and commercial applications are reviewed in the paper.
在高应变速率条件下，LY 12铝合金具有较好的超塑性和室温性能。
In higher strain-rate condition, LY12 alloy has good superplasticity and room temperature properties.
同时介绍了玻璃陶瓷、纳米陶瓷的超塑性，并兼顾了一些结构陶瓷在高应变速率下的超塑性。
Meanwhile, the superplasticity of glass-ceramics and nanostructured ceramics were also presented. The high strain rate superplasticity was summarized particularly.
通过对高应变速率一维剪切变形理论模型的分析，提出了绝热剪切带宽度和间距与切削速度的关系式。
Based on the theoretic model of one-dimensional shear deformation under high rate loading, a relation of width and spacing for adiabatic shear band to cutting speed is proposed.
合金在高应变速率的变形中通过动态再结晶可获得更细的晶粒尺寸，其断裂时总延伸率在135%左右。
They also show that a finer grain size can be obtained by dynamic recrystallization during superplastic deformation at a high strain rate, but the total elongation to failure is limited in about 135%.
超塑性变形的主要机制是细小晶粒的晶界滑动，适当的微量液相有利于该复合材料的高应变速率超塑性。
The dominant process of superplastic deformation is fine grain boundary sliding, and an appropriately small amount of liquid phase can enhance the high strain rate superplasticity of the composite.
综述了镁合金超塑性的研究进展，总结了镁合金超塑性变形的微观机理，评述了镁合金高应变速率超塑性的研究状况，提出了几个需要解决的问题和研究方向。
The current status of research on high strain rate superplasticity of magnesium alloys is then examined, and several problems to be solved and future directions are suggested.
但是较慢的溶解速率以及相对高的应变速率使得裂纹没有足够时间发生有效扩展，应力腐蚀敏感性仍然较低。
Nevertheless, there are not enough time for the effective growth of the cracks because of slow dissolution rate and relative high strain rate. Therefore, the SCC susceptibilities are also low.
但是较慢的溶解速率以及相对高的应变速率使得裂纹没有足够时间发生有效扩展，应力腐蚀敏感性仍然较低。
Nevertheless, there are not enough time for the effective growth of the cracks because of slow dissolution rate and relative high strain rate. Therefore, the SCC susceptibilities are also low.
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