Deformation and Residual Stress Characteristics of TC17 Alloy Subjected to Laser Shock Peening with Single and Double Sides

Zhao, Minghuang; Duan, Chao; Li, Jiayi; Luo, Xiao

doi:10.1088/1757-899x/493/1/012001

Cited by 3 publications

(1 citation statement)

References 20 publications

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“…The absorption layer rapidly evaporates and ionizes under laser irradiation, forming high-temperature and high-pressure plasma, which propagates into the workpiece under the action of the con nement layer. Due to the peak pressure of the shock wave being much higher than the dynamic yield strength of the material, a high strain rate of plastic deformation and residual compressive stress layer with large depth (up to 1-2 mm) and high amplitude (hundreds of MPa) are produced in the material [17][18][19][20][21]. Therefore, applying LSP can change the surface and internal structure of the material and improve the comprehensive properties of the material.…”

Section: Introductionmentioning

confidence: 99%

Investigation of microstructure and tribological property of Ti-6Al-4V alloy by laser shock peening processing

Gu,

Tian,

Zhao

et al. 2023

Int J Adv Manuf Technol

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Laser shock peening (LSP) is a process to introduce compressive residual stresses for improved surface properties of materials. In this study, the effect of LSP on the microstructure and tribological property of Ti-6Al-4V alloy was investigated. The surface and cross-sectional microstructure of the samples show that the shape of the β phase changes from a long strip to a short bar and granular after the LSP treatment. With the increase of laser energy, the surface roughness decreases gradually while the surface microhardness is increased. The maximum hardness is on the surface, and with the increase of the depth, the hardness decreases until a stable value of 339.4 HV which is the microhardness of the matrix. The thickness of the high-microhardness layer is about 350 μm. LSP treatment can decrease the average friction coe cient and effectively improve the tribological property of Ti-6Al-4V alloy. The higher the laser energy, the better the wear resistance. This study is helpful for further study and applications of the LSP process in improving the tribological property of Ti alloys. Recently, research has been performed in the eld of LSP, mainly focusing on common metal materials such as steel [22], aluminum alloy [23], and titanium alloy [24]. Bai et al. [25] studied the improvement of

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Section: Introductionmentioning

confidence: 99%

Investigation of microstructure and tribological property of Ti-6Al-4V alloy by laser shock peening processing

Gu,

Tian,

Zhao

et al. 2023

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

Stepwise varying of laser parameters to enhance the residual stress field in multiple laser shock processing: numerical verification of single-point region

Luo²,

Li³

et al. 2023

Int J Adv Manuf Technol

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Investigation of microstructure and tribological property of Ti-6Al-4V alloy by laser shock peening processing

Gu¹,

Tian²,

Zhao

et al. 2023

Preprint

View full text Add to dashboard Cite

Laser shock peening (LSP) is a process to introduce compressive residual stresses for improved surface properties of materials. In this study, the effect of LSP on the microstructure and tribological property of Ti-6Al-4V alloy was investigated. The surface and cross-sectional microstructure of the samples show that the shape of the β phase changes from a long strip to a short bar and granular after the LSP treatment. With the increase of laser energy, the surface roughness decreases gradually while the surface microhardness is increased. The maximum hardness is on the surface, and with the increase of the depth, the hardness decreases until a stable value of 339.4 HV which is the microhardness of the matrix. The thickness of the high-microhardness layer is about 350 μm. LSP treatment can decrease the average friction coefficient and effectively improve the tribological property of Ti-6Al-4V alloy. The higher the laser energy, the better the wear resistance. This study is helpful for further study and applications of the LSP process in improving the tribological property of Ti alloys.

show abstract

Deformation and Residual Stress Characteristics of TC17 Alloy Subjected to Laser Shock Peening with Single and Double Sides

Cited by 3 publications

References 20 publications

Investigation of microstructure and tribological property of Ti-6Al-4V alloy by laser shock peening processing

Investigation of microstructure and tribological property of Ti-6Al-4V alloy by laser shock peening processing

Stepwise varying of laser parameters to enhance the residual stress field in multiple laser shock processing: numerical verification of single-point region

Investigation of microstructure and tribological property of Ti-6Al-4V alloy by laser shock peening processing

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