scholarly journals Effect of Laser Shock Peening on the Surface Morphology of Metallic Glasses

2017 ◽  
Vol 898 ◽  
pp. 689-695
Author(s):  
Yan Sen Li ◽  
Kun Zhang ◽  
Gui Hua Duan ◽  
Guang Yue Xu ◽  
Yu Hang Wei ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Surface Morphology ◽  
Metallic Glasses ◽  
Close Correlation ◽  
Laser Shock Peening ◽  
Morphology Evolution ◽  
Laser Shock ◽  
Localized Structures ◽  
Shock Peening ◽  
Surface Morphologies

Laser shock peening is a promising effective approach for improving mechanical properties of metallic glass. In this work, laser shock peening was employed to study the surface morphologies of metallic glasses with different toughness. Numerous localized circular-or arc-shaped structures, with the size of 5~20 μm, were observed in the shock treated surface. The number of these unique localized structures has a close correlation to the ability of metallic glass to accommodate plastic deformation. In addition, the surface morphology evolution of Zr-based metallic glasses with different crystalline degrees is also discussed, indicating that the circular-or arc-shaped structures only appear in fully amorphous system.

scholarly journals A study on the surface morphology evolution of the GH4619 using warm laser shock peening

AIP Advances ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 085030 ◽  
Author(s):  
Ying Lu ◽  
Jibin Zhao ◽  
Hongchao Qiao ◽  
Taiyou Hu ◽  
Boyu Sun ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Laser Shock Peening ◽  
Morphology Evolution ◽  
Laser Shock ◽  
Shock Peening ◽  
Surface Morphology Evolution

scholarly journals The Evolution of Micromechanical Properties for Zr-Based Metallic Glass Induced by Laser Shock Peening

2021 ◽  
Vol 8 ◽  
Author(s):  
Yansen Li ◽  
Zhitao Wang ◽  
Yanpeng Wei ◽  
Tianyu Chen ◽  
Chunfeng Zhang ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Metallic Glass ◽  
Metallic Glasses ◽  
Laser Shock Peening ◽  
Laser Shock ◽  
Micromechanical Properties ◽  
Shock Region ◽  
Deformation Ability ◽  
Shock Peening ◽  
The Impact

The micromechanical properties of Zr-based metallic glass (MG) induced by laser shock peening (LSP) were studied through the use of nanoindentation. The serrations in representative load-displacement (P-h) curves exhibited a transformation from stairstep-like to ripple-shaped from untreated zone to shock region, which implied an increase in plastic deformation ability of material after LSP. Significant hardening was also observed in the impact zone, which can be attributed to the effect of compressive residual stress. Both increase in hardness and plastic deformation ability in shock region indicate the excellent effect of LSP on the micromechanical properties of investigated Zr-based MG, which provide a new way to study the deformation mechanism in metallic glasses and a further understanding of plasticization.

scholarly journals A Novel Micro-Scale Plastic Deformation Feature on a Bulk Metallic Glass Surface under Laser Shock Peening

2013 ◽  
Vol 30 (3) ◽  
pp. 036201 ◽  
Author(s):  
Yan-Peng Wei ◽  
Bing-Chen Wei ◽  
Xi Wang ◽  
Guang-Yue Xu ◽  
Lei Li ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Glass Surface ◽  
Laser Shock Peening ◽  
Laser Shock ◽  
Micro Scale ◽  
Deformation Feature ◽  
Shock Peening

scholarly journals Laser Shock Peening of Ti6Al4V Alloy with Combined Nanosecond and Femtosecond Laser Pulses

Metals ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 26
Author(s):  
Rujian Sun ◽  
Guangzhi He ◽  
Hailin Bai ◽  
Jianfeng Yan ◽  
Wei Guo
Keyword(s):  
Femtosecond Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Laser Shock Peening ◽  
Metallic Materials ◽  
Laser Shock ◽  
Laser Absorption ◽  
Shock Peening ◽  
Surface Morphologies ◽  
Equiaxed Grains

Laser shock peening (LSP) with nanosecond or femtosecond laser pulses is applied to improve the mechanical properties of metallic materials. Thus, it is necessary to compare the effects of different processing methods on microstructure changes and property improvement. In this study, nanosecond LSP (NLSP), femtosecond LSP (FLSP), and LSP with combined nanosecond and femtosecond laser pulses (F-NLSP) are conducted on Ti6Al4V alloys to compare the surface morphologies, in-depth microstructures, and nanohardness changes. In FLSP, the peened surface is smooth, and the affected depth is limited near the peened surface. NLSPed and F-NLSPed samples present rough surfaces due to the severe ablation process. Small equiaxed grains with no preferred grain orientation are denser in F-NLSPed samples than that in NLSPed samples. Compared with NLSPed samples, the affected depth and amplitude of in-depth nanohardness are larger in F-NLSPed samples. This is attributed to the increased laser absorption of incident laser on the treated surface by femtosecond laser pulses. The results in this study show the effects of different LSP methods and provide chances in engineering potentials for material property improvements.

scholarly journals Laser Shock Peening on Zr-based Bulk Metallic Glass and Its Effect on Plasticity: Experiment and Modeling

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Yunfeng Cao ◽  
Xie Xie ◽  
James Antonaglia ◽  
Bartlomiej Winiarski ◽  
Gongyao Wang ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Laser Shock Peening ◽  
Laser Shock ◽  
Shock Peening
Sign in / Sign up

Export Citation Format

Share Document