Simultaneously enhancing strength and ductility of LPBF Ti alloy via trace Y2O3 nanoparticle addition

Yinghang Liu,Zhe Song,Yi Guo,Gaoming Zhu,Yunhao Fan,Huamiao Wang,Wentao Yan,Xiaoqin Zeng,Leyun Wang

Journal of Materials Science & Technology（2024）

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摘要

•Y2O3 nanoparticles were mixed with a pre-alloyed Ti-4Al-4V (Ti44) powder•LPBF Ti44-0.1Y2O3 shows an excellent combination of strength and ductility•More variants were induced during the β→α' transformation•Y2O3 nanoparticles caused the formation of more dislocations•Y2O3 nanoparticles strengthened the material by the Orowan mechanism

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关键词

Titanium alloys,Additive manufacturing,Nanoparticles,Ductility,Synchrotron diffraction

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