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16 December 2022 The effect of laser shock peening with and without protective coating on mechanical properties of surface of AZ31B
Pengkai Liu, Hongyu Quan, Wentai Ouyang, Liming Yuan, Wensheng Luo, Xiu Qin, Junke Jiao, Liyuan Sheng, Wenwu Zhang
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Proceedings Volume 12501, Seventeenth National Conference on Laser Technology and Optoelectronics; 125010S (2022) https://doi.org/10.1117/12.2656265
Event: Seventeenth National Conference on Laser Technology and Optoelectronics, 2022, Shanghai, China
Abstract
Laser shock peening without protective coating leads to mechanical and thermal loads of materials, resulting in surface melting and re-solidification. In this paper, the effect of laser shock peening (LSP) with and without protective coating on the surface behavior of AZ31B magnesium alloy was studied. Study on surface mechanical property of magnesium alloy by different LSP process parameters. The effects of different LSP parameters on the surface properties of the sample were studied by microhardness test, phase analysis, et al. The results show that the increase of laser power density, the surface hardness of the sample increases. Compared with the LSP with protective coating, the LSP without protective coating increases the surface roughness. And resulting microstructure and residual stress state were studied, After LSP treatment, diffraction peaks shift to high angle direction, resulting in residual compressive stress on the surface of the material.
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Pengkai Liu, Hongyu Quan, Wentai Ouyang, Liming Yuan, Wensheng Luo, Xiu Qin, Junke Jiao, Liyuan Sheng, and Wenwu Zhang "The effect of laser shock peening with and without protective coating on mechanical properties of surface of AZ31B", Proc. SPIE 12501, Seventeenth National Conference on Laser Technology and Optoelectronics, 125010S (16 December 2022); https://doi.org/10.1117/12.2656265
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KEYWORDS
Coating
Magnesium
Diffraction
Surface roughness
Laser applications
Corrosion
Image processing
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