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李福林

作品数:1 被引量:4H指数:1
供职机构:北京航空航天大学材料科学与工程学院更多>>
发文基金:国家自然科学基金更多>>
相关领域:一般工业技术金属学及工艺更多>>

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Kinetics and microstructural evolution during recrystallization of a Ni_3Al-based single crystal superalloy被引量:4
2012年
The recrystallization kinetics and microstructural evolution of a Ni3Al-based single crystal superalloy were presented, especially the different recrystallization behaviors between the dendrite arm and the interdendritic region. The single crystal alloy was deformed by grit blasting. A succeeding annealing under inert atmosphere at 1280 ℃ for different time led to the formation of recrystallized grains close to the grit blasting surface. It was found that the recrystallization depth and velocity in the dendrite arm were respectively deeper and faster than those in the interdendritic region where the Y-NiMo phase existed. The recrystallization process in the interdendritic region was significantly inhibited by the Y-NiMo precipitates. However, the pinning effect gradually weakened with the annealing time due to the dissolution of the Y-NiMo phase, and the recrystallization depth in the dendrite arm was deeper than that in the interdendritic region.
武雨潇张恒李福林李树索宫声凯韩雅芳
关键词:RECRYSTALLIZATIONKINETICS
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