本文研究了Bi原子偏析于Cu的∑=17(530)/〔001〕四种对称倾转晶界引起的晶界结构变化.观察到了晶界因偏析而由一种结构转变成另一种结构,同时伴随着上、下两晶粒的相对位移及晶界的迁移.根据晶界结构单元模型及结构的多重性,提出了切变模型对这些现象进行了解释.
Atomic structures of four ∑=17 (530)/[001] symmetrical bound-aries in Cu containing segregated Bi atoms at different sites have been studied. Thesegregation induced structural transformations from one structure to another accom-panying with the displacement of the upper grain in respect to the lower grainand the migration of the grain boundary plane have been observed. A shear mecha-nism has been proposed in order to explain such foundings on basis of the grainboundary structural unit model and the structural multiplicity.
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