材料科学
高温合金
冶金
晶界
单晶
微观结构
复合材料
粒度
作者
Bartosz Chmiela,Dariusz Szeliga,Maria Sozańska,G. Jarczyk,Jan Cwajna
出处
期刊:Practical Metallography
[De Gruyter]
日期:2013-10-18
卷期号:50 (8): 548-560
被引量:3
摘要
Abstract Modern single crystal (SX) turbine blades are fabricated by directional solidification using a grain selector. The grain selection process was investigated by numerical simulation and verified by the experiment. A coupled ProCAST and cellular automaton finite element (CAFE) model was used in this study. According to the latest literature data, we designed the grain selector. Simulation confirmed an optimal grain selection efficiency of the applied selector geometry. The obtained experimental results reveal the possibility of stray grain formation in SX castings with a designed selector, in contrast to the simulation results.
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