journal article·2025-11-01

Utilizing laser peening in mitigating hydrogen embrittlement susceptibility of TC4 titanium alloy under varying hydrogenated conditions

Emmanuel Agyenim-Boateng, Shu Huang, Jie Sheng, Chaojun Zhao, Qinqing Sha, Zhipeng Tan, Yufei Hou, Fengze Dai, Mingliang Zhu, Jianzhong Zhou

Journal of Laser Applications· Volume 37· Issue 4
Publisher page

Abstract

Hydrogen embrittlement (HE) sensitivity of laser-peened TC4 titanium alloy under various hydrogenation settings was examined in this study by analyzing the impact of laser peening (LP) generated compressive residual stress, refined grains, and dislocation density on hydrogen-induced surface changes, XRD phase shifts, microhardness, and tensile properties of the alloy under varying hydrogenation conditions. The results indicate that even at higher hydrogenation levels, LP significantly mitigated the effects of hydrogen-induced microstructural changes and alloy hardening rates. Moreover, an increase in laser pulse energy further limited the effects of hydrogen-induced negative surface properties, suggesting that hydrogen diffusion suppression is effective even at higher hydrogenation conditions. The LPed specimens showed enhanced toughness under higher laser pulse energy, and they were more resilient than the non-LPed ones for the different hydrogenation settings. Consequently, even at greater hydrogenation circumstances, LP can greatly lower the alloy’s hydrogen embrittlement index to increase its HE resistance.
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Research context

OpenAlex topics: Surface Treatment and Residual Stress · Hydrogen embrittlement and corrosion behaviors in metals · Metal and Thin Film Mechanics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Mechanical Engineering, Jiangsu University 1 , Zhenjiang 212013,

Department of Mechanical Engineering, Koforidua Technical University 2 , Koforidua KF-981,

Key Laboratory of Pressure Systems and Safety, Ministry of Education, School of Mechanical and Power Engineering, East China University of Science and Technology 3 , Shanghai 200237,

Zhejiang Provincial Innovation Center for Laser Intelligent Equipment Technology 4 , Wenzhou 325000,

Funding

National Natural Science Foundation of China · Natural Science Foundation of Jiangsu Province · Key R&D and Achievement Transformation Plan of Inner Mongolia Autonomous Region · Scientific Research Innovation Capability Support Project for Young Faculty · China Postdoctoral Science Foundation · Jiangsu Planned Projects for Postdoctoral Research Funds · Opening Project of the Key Laboratory of CNC Equipment Reliability, Ministry of Education, Jilin University

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