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金属学报  2001 

Ni基单晶高温合金原树枝状晶结构典型区域γ和γ′相成分的测算

, PP. 345-352

Keywords: Ni基高温合金,相成分,元素分配比

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Abstract:

导出了高温合金γ和γ′相的元素分配比和分配系数.以CMSX-2合金为研究对象,用EDAX区域扫描测得热处理后未变形试样和经持久变形至断裂试样原树枝状晶三个典型区域(枝晶干、枝晶臂和枝晶间)的成分,使用分配系数法计算了各区域中γ和γ′相的成分分析了各区相成分分布的特点及其与合金持久寿命的对应关系

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