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unknown
Microstructure Evolution of Ni-based Single Crystal Superalloy During Heat-treating
Authors
孙跃军
张军
葛艳辉
Publication date
25 January 2012
Publisher
Abstract
利用螺旋选晶法制备了镍基单晶合金,研究了热处理过程中合金的组织演变。结果表明:合金的铸态组织由枝晶组成,W偏析于枝晶干,Ti、Cr、Mo和Ta偏析于枝晶间,固溶处理可以消除铸态组织中的枝晶,减小成分偏析,固溶温度越高,粗大的γ’和γ/γ’共晶溶解的越完全。时效处理过程中,大尺寸的γ’发生粗化,小尺寸的γ’逐渐消失,时效温度越高,γ’粗化得越严重。热处理促进合金元素在γ和γ’中的均匀分布,减小了合金的错配度
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Institute Of Mechanics,Chinese Academy of Sciences
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Last time updated on 12/02/2018