可动位错(Movable dislocation)是指一个全位错分解为两个或多个不全位错。C u / N i 多层膜的强化作用来自于多层膜结构中交变应力场对位错运动的约束。该交变应力场主要包括两部分: 在共格界面处由于剪切模量差而导致的镜像力, 以及多层膜内由于晶格常数差而形成失配位错网的应力。
而塑性下降则归因于较薄薄膜的晶粒内较少的可动位错。
The decrease in the ductility of the microbeam is attributed to fewer mobile dislocations in the grain.
受非马氏体组织的影响及可动位错密度降低的作用,屈服强度、屈强比随退火温度升高而升高。
The yield strength, yield ratio increase with the increase of annealing temperature, due to the impact of non-martensite and the decrease of movable dislocation density.
这说明,即使是脆性材料,其位错在一定条件下仍然是可动的。
This phenomenon indicates that the dislocations are mobile at certain condition even in brittle materials.
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