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题名: Intergrowth of C phase within mu phase in a Re-containing Ni-base single crystal superalloy
作者: Gao, S;  Zhou, YZ;  Liu, ZQ;  Jin, T
发表日期: 2018-5-1
摘要: Precipitation of topologically close-packed phases in a Re-containing Ni-base single crystal superalloy was studied under elevated temperature by in situ transmission electron microscopy. Above 1150 degrees C, a new intergrowth structure called C phase was found within mu phase with a defined crystallographic orientation relationship. Elements mapping analysis reveals that C phase has a similar element composition as mu phase, but contains a lower level of Cr, W and Re. With increasing temperature, the proportion of C phase increases gradually. At 1250 degrees C, C phase becomes the dominant precipitate. It is demonstrated that C phase is more thermodynamically stable than mu phase above 1150 degrees C that leads to an intergrowth pathway from mu phase to C phase. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
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Recommended Citation:
Gao, S,Zhou, YZ,Liu, ZQ,et al. Intergrowth Of C Phase Within Mu Phase In A Re-containing Ni-base Single Crystal Superalloy[J]. Journal Of Materials Science & Technology,2018,34(5):806-810.

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