... grain-boundary shape || 晶界形状 grain-boundary sliding || 晶界滑动 grain-boundary strength || 晶界强度 ...
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In a large size grain (about 40-50 um), the dislocation sliding and twinning are the main deformation mechanism, and in a small size grain (5-20 um), grain boundary sliding is another important mechanism to improve the ductility of magnesium alloy.
在40～50μm的大晶粒中，变形机制以滑移和孪生为主，而在5～20μm的小晶粒中，晶界滑动机制发挥了重要作用，它可以协调大尺寸晶粒的变形，对提高镁合金变形能力起有益的补充作用。
参考来源 - 稀土变形镁合金组织性能及加工工艺研究As known from the dislocation theory, dislocations seldom appear in the grain interior, and the plasticdeformation of nanocrystallite mainly carries out by the grain boundary sliding and grain rotation.
小晶粒尺寸纳米晶体内部很少存在位错，纳米晶体的塑性变形主要依靠晶界滑移和晶粒的转动来实现。
参考来源 - Fe、Ni、Zr纳米晶体微观结构与力学性能的分子动力学模拟·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
These rocks are lack of foliation and resulted from the brittle fragmentation of mineral grains with rotation of grain fragments accompanied by fractional grain boundary sliding and dilatancy.
这类岩石缺乏面理构造，是由于矿物颗粒的脆性碎裂，旋转以及颗粒边界的磨擦滑动和扩展而造成的。
Experimental results indicate that cavities are formed during superplastic deformation due to the inconsistency of grain boundary sliding.
实验结果表明，孔洞是由于超塑性拉伸变形中品界滑动不协调而引起的。
In the process of superplastic deformation, the dislocation sliding has important cordinating effect, so that the grain boundary sliding proceeds easily.
合金在超塑变形中，位错滑移起重要协调作用，使晶界滑动易于进行。
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