Investigation of fatigue behavior of laser powder bed fusion Ti-6Al-4V: Roles of heat treatment and microstructure

Jianwen Liu,Kai Zhang,Jie Liu,Hao Wang,Yi Yang,Liangming Yan,Xinni Tian,Yuman Zhu,Aijun Huang

International Journal of Fatigue（2023）

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摘要

•The influence of the GB-α on the fatigue behavior of LPBF Ti–64 was investigated.•HCF property is improved due to low aspect ratio α lath and discontinuous GB-α.•Discontinuous GB-α could improve the crack propagation resistance.•α lath with a low aspect ratio inhibits the crack initiation at the interface.

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关键词

Laser powder bed fusion,Ti-6Al-4V,Grain boundary α-phase,Fatigue performance

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