Evolution of Grain Selection in Spiral Selector during Directional Solidification of Nickel-base Superalloys

查看全文 作　　者：Xiangbin [1,2]Meng;Jinguo [1]Li;Tao [1]Jin;Xiaofeng [1]Sun;Changbo [3]Sun;Zhuangqi [1]Hu

机构地区：[1]Institute of Metal Research,Chinese Academy of Sciences,Shenyang 00,China;[2]Graduate School of Chinese Academy of Sciences,Beijing 000,China;[3]Shenyang Liming Aero-engine(Group) Corporation Ltd.,Aviation Industry Corporation of China(AVIC),Shenyang 110043,China

出　　处：《Journal of Materials Science & Technology》索引2011年第27卷第2期,共9页

基　　金：supported by the National Basic Research Program of China ('973 Program') under grant Nos. (2010CB631200 and 2010CB631206);the National Natural Science Foundation of China undergrant No.50931004 摘　　要：The process of grain selection in the spiral selector was investigated by both a ProCAST simulation based on a cellular automaton finite element(CAFE) model and experimental confirmation.The results show that the height of starter block,the spiral diameter and initial angle play an important role in grain selection.The dimension of selector should be maintained in a stable range to optimize the grain orientation and select a single crystal efficiently.A selector which can efficiently select a single crystal had been successfully designed.Grain orientation fluctuation in the spiral part was also studied by means of the variation of thermal condition. 关键词：螺旋直径粮食合金凝固进化过程 PROCAST 高温镍基元胞自动机

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Evolution of Grain Selection in Spiral Selector during Directional Solidification of Nickel-base Superalloys

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