High strength Al0.7CoCrFeNi2.4 hypereutectic high entropy alloy fabricated by laser powder bed fusion via triple-nanoprecipitation

Zhaowen Geng,Chao Chen,Miao Song,Jinru Luo, Jiaxuan Chen,Ruidi Li,Kechao Zhou

Journal of Materials Science & Technology（2024）

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摘要

•Al0.7CoCrFeNi2.4 HEAs were manufactured by LPBF with better printability.•2. Cellular structures consisting of FCC cells and B2 networks were obtained.•3. Aging treatment achieved the coexistence of three nanoprecipitates.•4. The rod-like B2 compensated the strength decrement caused by dislocation recovery and cellular structure receding.

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关键词

Laser powder bed fusion,Hypereutectic,High entropy alloys,Nanoprecipitation,Strengthening mechanism

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