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中文摘要：
镍基单晶高温合金涡轮叶片缘板杂晶的出现严重影响叶片的力学性能，导致叶片报废。综述了关于缘板杂晶的形成本质的研究，总结了不同影响因素对缘板杂晶形成的影响及原因并概况了几种不同杂晶的控制方法，指出了以往研究中存在的问题，展望了未来研究的方向。
英文摘要：
Stray grains （SGs） in the platform region of the Ni-base single crystal turbine blades are deleterious to the mechanical properties in service, therefore the formation of SG may directly cause the rejection of the castings. This paper reviews the researches on the origin, mechanism and influencing factors of stray grain formation in the platform region. Several controlling techniques and their mechanism on SG control are also summarized. The current existing problem and future research aspects are stated and discussed as well.
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Effect of Directional Solidification Methods onthe Cast Microstructure and Grain Orientation of Blad
Effect of carbon and boron additions on segregation behavior of directionally solidified nickel-base
Competitive grain growth mechanism in three dimensions during directional solidification of a nickel
Competitive grain growth mechanism in threedimensions during directional solidification of a nickel-
Influences of processing parameters onmicrostructure during investment casting of nickel-base single
The process analysis of seeding-grain selectionand its effect on stray grain and orientation control
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