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%.
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。
The results show that tensile strength and yield strength increase generally, while total elongation and product of strength and ductility decrease with the increase of strain rate.
结果表明，随应变率的增加，抗拉强度与屈服强度总体呈上升趋势，而断裂伸长率及强塑积单调下降。
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