Portevin-Le Chatelier effect in wrought Ni-based superalloys:Experiments and mechanisms
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2020年第16期
论文作者：Chuanyong Cui Rui Zhang Yizhou Zhou Xiaofeng Sun
文章页码：16 - 31
摘 要：The Portevin-Le Chatelier（PLC） effect is a plastic instability in alloys at certain strain rates and deformation temperatures. This plastic instability exhibits serrated yielding in the temporal domain and strain localization in the spatial domain. Wrought Ni-based superalloys often exhibit the PLC effect. To guarantee the safe and stable operation of equipment, it is important to study the PLC effect in wrought Ni-based superalloys. This paper provides a review of various experimental phenomena and micromechanisms related to the PLC effect in wrought Ni-based superalloys, which have been reported in various publications in recent years and include work from our own group. The influences of stacking fault energy and γ’ precipitates on the PLC effect in wrought Ni-based superalloys are also discussed in detail. Additionally,several suggestions for the future study of the PLC effect in wrought Ni-based superalloys are provided.
Chuanyong Cui，Rui Zhang，Yizhou Zhou，Xiaofeng Sun
Institute of Metal Research, Chinese Academy of Sciences
摘 要：The Portevin-Le Chatelier（PLC） effect is a plastic instability in alloys at certain strain rates and deformation temperatures. This plastic instability exhibits serrated yielding in the temporal domain and strain localization in the spatial domain. Wrought Ni-based superalloys often exhibit the PLC effect. To guarantee the safe and stable operation of equipment, it is important to study the PLC effect in wrought Ni-based superalloys. This paper provides a review of various experimental phenomena and micromechanisms related to the PLC effect in wrought Ni-based superalloys, which have been reported in various publications in recent years and include work from our own group. The influences of stacking fault energy and γ’ precipitates on the PLC effect in wrought Ni-based superalloys are also discussed in detail. Additionally,several suggestions for the future study of the PLC effect in wrought Ni-based superalloys are provided.
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