The formation of B2-precipitate and its effect on grain growth behavior in aluminum-containing CoCrNi medium-entropy alloy

Hyomin Kim,Donghee Lee, Hyungjun Kim,Yejin Kim, Myeonghyeon Jang, Dongyoung Kwen, Yoonseong Koo, Eunjin Kim,Hyeonseok Cho,Maya Putri Agustianingrum,Nokeun Park,Boris Straumal

Materials Letters（2021）

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摘要

•B2-precipitate formation at grain boundary of Al7.45CoCrNi92.55 was investigated.•FCC grain growth has been delayed using the pinning effect of B2-precipitate.•Unusual hardness behavior is explained by major role of precipitation strengthening.•B2-precipitate exhibited Kurjumov-Sachs orientation relationship with FCC matrix.

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关键词

Metals and alloys,Grain growth,Interfaces,Electron microscopy,B2-precipitate

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