The results show that Widmansttten structure needle consists of many blocky subgrains that have higher dislocation density and subgrain boundary is made up of dislocation tangle.
结果表明，魏氏组织针由多个块状的亚晶粒组成，亚晶粒边界由位错缠结而成，在亚晶粒内有较高的位错密度；
2
We propose an ideal configuration of a dislocation obliquely intersecting the phase boundary in a two phase medium.
本文建立了二相介质中与相界斜交位错的一种理想构型。
3
In the process of superplastic deformation, the dislocation sliding has important cordinating effect, so that the grain boundary sliding proceeds easily.