Effect of Laser Shock Peening on Fretting Fatigue Life of TC11 Titanium Alloy

The purpose of this paper is to investigate the performance of laser shock peening (LSP) subjected to fretting fatigue with TC11 titanium alloy specimens and pads. Three laser power densities (3.2 GW/cm(2), 4.8 GW/cm(2) and 6.4 GW/cm(2)) of LSP were chosen and tested using manufactured fretting fati...

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Detalles Bibliográficos
Autores principales: Yang, Xufeng, Zhang, Hongjian, Cui, Haitao, Wen, Changlong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7660071/
https://www.ncbi.nlm.nih.gov/pubmed/33105746
http://dx.doi.org/10.3390/ma13214711
Descripción
Sumario:The purpose of this paper is to investigate the performance of laser shock peening (LSP) subjected to fretting fatigue with TC11 titanium alloy specimens and pads. Three laser power densities (3.2 GW/cm(2), 4.8 GW/cm(2) and 6.4 GW/cm(2)) of LSP were chosen and tested using manufactured fretting fatigue apparatus. The experimental results show that the LSP surface treatment significantly improves the fretting fatigue lives of the fretting specimens, and the fretting fatigue life increases most when the laser power density is 4.8 GW/cm(2). It is also found that with the increase of the laser power density, the fatigue crack initiation location tends to move from the surface to the interior of the specimen.

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