Abstract

The above-barrier glide of edge dislocations in binary alloys containing Guinier–Preston zones under high-energy impacts was theoretically analyzed. It was shown that the dependence of the yield stress of these alloys on the dislocation density in conditions of high-rate deformation deviates from the Taylor relationship and is a nonmonotonic function with a maximum. The maximum point corresponds to the dislocation density value at which their contribution to the formation of spectral gap becomes predominant.

中文翻译：

---

高能冲击下二元合金动态屈服应力与位错密度的关系

摘要

从理论上分析了在高能冲击下含Guinier-Preston区的二元合金中边缘位错的上述势垒滑移。结果表明，在高速变形条件下，这些合金的屈服应力对位错密度的依赖性偏离了泰勒关系，并且是最大的非单调函数。最高点对应于位错密度值，在位错密度值上，它们对形成光谱间隙的作用变得占主导。