Effect of stress on recrystallization of single crystal superalloy

doi:10.13251/j.issn.0254-6051.2022.02.009

Abstract

Abstract: Effect of stress on recrystallization formation law of single crystal superalloy was studied through a combination of experiment and theoretical calculation. The results show that the formation of recrystallization is closely related to stress. Recrystallization only occurs when the applied stress is higher than the critical stress, but not occur when the applied stress is lower than the critical stress, meanwhile the critical stress of recrystallization decreases with the increase of temperature. At the same temperature, the thickness of recrystallization layer of the tested alloy increases linearly with the increase of stress. Under the same stress, the thickness of recrystallization layer increases exponentially with the increase of temperature. In addition, with the increase of temperature, the increasing rate of recrystallization layer thickness accelerates due to the increase of stress.

Key words: single crystal superalloy, recrystallization, stress, temperature, γ′ phase

CLC Number:

TG132.3

Li Yongshun, Xuan Weidong, Duan Fangmiao, Zhao Yujuan, Li Junjie, Wang Baojun, Ren Xingfu, Ren Zhongming. Effect of stress on recrystallization of single crystal superalloy[J]. Heat Treatment of Metals, 2022, 47(2): 48-52.

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