Surface rolling deformed severity-dependent fatigue mechanism of Ti-6Al-4V alloy

Ni Ao, Daoxin Liu, Xiaohua Zhang, Jiwang Zhang, Shengchuan Wu

科研成果: 期刊稿件文章同行评审

29 引用 (Scopus)

摘要

This work investigates the effect of initial surface plastic deformation on the fatigue behavior of Ti-6Al-4V alloy based on the microstructure and residual stress evolution under fatigue loading. The high strain hardening ability, full play of compressive residual stress, and excellent surface integrity of samples with low plastic deformation severity resulted in relatively higher fatigue strength. Microstructural analysis revealed that the ultrasonic surface rolling process (USRP) applied to samples with low plastic deformation severity accommodated plastic strain by refining the grains, whereas the grains coarsened in the USRP samples with high plastic deformation severity for accommodating the plastic strain.

源语言英语
文章编号106732
期刊International Journal of Fatigue
158
DOI
出版状态已出版 - 5月 2022

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