High energy laser shock peening of Ti6Al4V alloy without any protective coating

Maharjan, Niroj; Ramesh, Thivyaa; Wang, Zichen

doi:10.1016/j.apsusc.2023.158110

Cited by 16 publications

(2 citation statements)

References 25 publications

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“…Consequently, the wear mechanism of the material is altered, resulting in a reduction in the incidence of abrasive wear and fatigue wear. In LSP, the high-density energy affects grain orientation and triggers grain slip, resulting in a significant number of dislocations [70]. Dislocations multiply and result in grains moving around in bulk materials, as well as near the surface.…”

Section: Discussionmentioning

confidence: 99%

“…In the region affected by the shock wave, the grain size reduces, leading to a substantial increase in the quantity of grain boundaries [73]. Additionally, LSP-treated In LSP, the high-density energy affects grain orientation and triggers grain slip, resulting in a significant number of dislocations [70]. Dislocations multiply and result in grains moving around in bulk materials, as well as near the surface.…”

Section: Discussionmentioning

confidence: 99%

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Laser Shock Peening: Fundamentals and Mechanisms of Metallic Material Wear Resistance Improvement

Cao,

Wu,

Zhong

et al. 2024

Materials

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With the rapid development of the advanced manufacturing industry, equipment requirements are becoming increasingly stringent. Since metallic materials often present failure problems resulting from wear due to extreme service conditions, researchers have developed various methods to improve their properties. Laser shock peening (LSP) is a highly efficacious mechanical surface modification technique utilized to enhance the microstructure of the near-surface layer of metallic materials, which improves mechanical properties such as wear resistance and solves failure problems. In this work, we summarize the fundamental principles of LSP and laser-induced plasma shock waves, along with the development of this technique. In addition, exemplary cases of LSP treatment used for wear resistance improvement in metallic materials of various nature, including conventional metallic materials, laser additively manufactured parts, and laser cladding coatings, are outlined in detail. We further discuss the mechanism by which the microhardness enhancement, grain refinement, and beneficial residual stress are imparted to metallic materials by using LSP treatment, resulting in a significant improvement in wear resistance. This work serves as an important reference for researchers to further explore the fundamentals and the metallic material wear resistance enhancement mechanism of LSP.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%