ATOMISTIC SIMULATION OF SEGREGATION IN Cu-Bi SYSTEM II. SEGREGATION INDUCED STRUCTURAL TRANSFORMATIONS AT GRAIN BOUNDARIES
WANG Guijin Senior engineer ,
Central Iron ,
Steel Reseorch Institute ,
Ministry of Metatturgicol Industry ,
Beijing ,
V VITEK Central Iron ,
Steel Research Institute ,
Ministry of Metallurgical Industry ,
Beijing ,
V VITEK Central Iron ,
steel Research Institute ,
Ministry of Metallurgical Industry ,
,
V.VITEK Keywords: grain boundary transformation ,segregation ,atomistic similation ,Cu-Bi alloy ,偏析 ,原子模拟 ,Cu-Bi合金
Abstract:
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.
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