Accelerating matrix/boundary precipitations to explore high-strength and high-ductile Co34Cr32Ni27Al3.5Ti3.5 multicomponent alloys through hot extrusion and annealing

Xiaoming Liu,Zongde Kou,Ruitao Qu,Weidong Song,Yijia Gu,Changshan Zhou,Qingwei Gao, Jiyao Zhang,Chongde Cao,Kaikai Song,Vladislav Zadorozhnyy,Zequn Zhang,Jürgen Eckert

Journal of Materials Science & Technology（2023）

引用 8|浏览27

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摘要

•Hot extrusion reduces grain sizes and simultaneously accelerates precipitation.•Pre-existing dislocation slips and hierarchical precipitates cause high strength.•Interaction among dislocations, stacking faults, and twins ensures acceptable ductility.

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关键词

Multicomponent alloys,Hot extrusion,Microstructure,Mechanical properties,Precipitation strengthening

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