| Precipitation behavior of γ′ phase in superalloy FGH96 under interrupted cooling test |
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| 作者姓名： | Heng-San Liu Lin Zhang Xin-Bo He Xuan-Hui Qu Zhou Li Guo-Qing Zhang |
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| 作者单位： | Beijing Key Laboratory for Powder Metallurgy and Particulate Materials, University of Science and Technology Beijing;National Key Laboratory of High Temperature Structural Materials, Beijing Institute of Aeronautical Materials |
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| 基金项目： | supported by the Science and Technology Project of Beijing (No. D09080300510901);National High Technology Research and Development Pro-gram of China (No. 2012AA03A514) |
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| 摘 要： | The precipitation behavior of γ′ phase,under various interrupt cooling tests after 1170℃,solution treatment was examined.The results indicate that the size of secondary γ′ precipitates increases with the decrease of interrupt temperature,and the shape changes from spherical to butterfly like.The fine tertiary γ′ can form either during the post cool air quenching at high interrupt-temperatures,or during the specified 5℃ min-1cooling.Air quenching at high temperatures cannot suppress further nucleation of tertiary γ′ phase.
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| 关 键 词： | Powder metallurgy Ni-base superalloy Interrupt cooling Precipitation |
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