Sub-solvus Cellular Recrystallization and P Phase Formation in a Single-Crystal Superalloy Containing Re
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- 作者：Long-Chao Zhuo ; Ming Huang ; Ji-Chun Xiong…
- 关键词：Nickel ; based single ; crystal superalloys ; Interfaces ; Recrystallization ; Twin boundary ; STEM
- 刊名：Acta Metallurgica Sinica (English Letters)
- 出版年：2015
- 出版时间：January 2015
- 年：2015
- 卷：28
- 期：1
- 页码：72-76
- 全文大小：6,197 KB
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文摘
Sub-solvus recrystallization behavior of a second-generation single-crystal superalloy has been studied by transmission electron microcopy and scanning transmission electron microcopy. Surface local stress facilitated cellular recrystallization accompanied with formation of twin structure and TCP phase of P during annealing at sub-solvus temperature of 1,100?°C. The precipitation of P phase is considered to be attributed to the coarsening of γ-/em> phase in the recrystallized aggregates which lower the activation energy for atomic migration.