The homogeneity of multi-textured micro-pattern arrays in a laser shock surface patterning process and its effect on the surface properties of aluminum alloy

2020 ◽  
Vol 382 ◽  
pp. 125149 ◽  
Author(s):  
Se Joo Koo ◽  
Hong Seok Kim
Keyword(s):  
Aluminum Alloy ◽  
Surface Properties ◽  
Surface Patterning ◽  
Laser Shock ◽  
Shock Surface ◽  
Micro Pattern

A Novel Laser Shock Surface Patterning Process Toward Tribological Applications

2019 ◽  
Author(s):  
Bo Mao ◽  
Arpith Siddaiah ◽  
Pradeep L. Menezes ◽  
Yiliang Liao
Keyword(s):  
Laser Processing ◽  
Processing Parameters ◽  
Surface Patterning ◽  
Laser Shock ◽  
Shock Surface ◽  
Surface Strengthening ◽  
Broader Impacts ◽  
Aisi 1045 ◽  
Surface Patterns ◽  
Surface Profiles

Abstract We report a novel laser-based surface processing process, laser shock surface patterning (LSSP) integrating both surface strengthening and patterning effects might lead to broader impacts in tribology research and applications. This process utilizes the laser-induced shockwave loadings to introduce the surface strengthening and patterning effects simultaneously, leading to the fabrication of arrays of micro-indentations or protrusions for the enhanced wear resistance and manipulated friction values. Two process designs, direct-LSSP and indirect-LSSP were proposed and carried out on AZ31B Mg alloys and AISI 1045 steels, respectively. The 3D surface profiles of the samples after LSSP were characterized. The hardness of surface patterns prepared by laser processing was measured. The friction values as affected by laser processing parameters were measured by sliding tests. The relationships among laser processing parameters, micro-feature characteristics, and COF were discussed.

Nonlinear surface wave measurements on aged and laser shock surface-treated Inconel 718 superalloy

2021 ◽  
Vol 121 ◽  
pp. 102457
Author(s):  
Vania M. Rodríguez-Herrejón ◽  
Alberto Ruiz ◽  
Carlos Rubio-González ◽  
Víctor H. López-Morelos ◽  
Jin-Yeon Kim ◽  
...  
Keyword(s):  
Surface Wave ◽  
Inconel 718 ◽  
Laser Shock ◽  
Shock Surface ◽  
Wave Measurements ◽  
Inconel 718 Superalloy ◽  
Nonlinear Surface

Effects of Sheet Thickness on Residual Stress Distribution by Laser Shock Processing of 7050-T7451 Aluminum Alloy

2011 ◽  
Vol 189-193 ◽  
pp. 3778-3781
Author(s):  
Yin Fang Jiang ◽  
Lei Fang ◽  
Zhi Fei Li ◽  
Zhen Zhou Tang
Keyword(s):  
Finite Element ◽  
Aluminum Alloy ◽  
Stress Distribution ◽  
Residual Stresses ◽  
Sheet Thickness ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Element Analysis ◽  
Finite Element Software ◽  
Shock Processing

Laser shock processing is a technique similar to shot peening that imparts compressive residual stresses in materials for improved fatigue resistance. Finite element analysis techniques have been applied to predict the residual stresses from Laser shock processing. The purpose of this paper is to investigate of the different sheet thickness interactions on the stress distribution during the laser shock processing of 7050-T7451 aluminum alloy by using the finite element software. The results indicate that the sheet thickness has little effects on the compression stress in the depth of sheet, but great impacts on the reserve side.

Micro-Structural Enhancement Mechanism of LY2 Aluminum Alloy by Means of a Single Laser Shock Processing

2010 ◽  
Vol 37 (10) ◽  
pp. 2662-2666 ◽  
Author(s):  
鲁金忠 Lu Jinzhong ◽  
罗开玉 Luo Kaiyu ◽  
冯爱新 Feng Aixin ◽  
钟俊伟 Zhong Junwei ◽  
孙桂芳 Sun Guifang ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Enhancement Mechanism ◽  
Single Laser ◽  
Shock Processing

WC Nano-Particle Implanting Strengthening on Aluminum Alloy Surface Via Laser Shock Peening

2011 ◽  
Vol 38 (12) ◽  
pp. 1203006
Author(s):  
吕亮 Lü Liang ◽  
黄婷 Huang Ting ◽  
钟敏霖 Zhong Minlin
Keyword(s):  
Aluminum Alloy ◽  
Laser Shock Peening ◽  
Alloy Surface ◽  
Nano Particle ◽  
Laser Shock ◽  
Shock Peening ◽  
Aluminum Alloy Surface

Experimental Study of Residual Stress Formation Mechanism of 7050 Aluminum Alloy Sheet by Laser Shock Processing

2016 ◽  
Vol 43 (7) ◽  
pp. 0702008
Author(s):  
曹宇鹏 Cao Yupeng ◽  
徐影 Xu Ying ◽  
冯爱新 Feng Aixin ◽  
花国然 Hua Guoran ◽  
周东呈 Zhou Dongcheng ◽  
...  
Keyword(s):  
Residual Stress ◽  
Experimental Study ◽  
Aluminum Alloy ◽  
Alloy Sheet ◽  
Laser Shock ◽  
Aluminum Alloy Sheet ◽  
Laser Shock Processing ◽  
7050 Aluminum Alloy ◽  
Stress Formation ◽  
Shock Processing

Enhancing the Frictional Behaviour of H-BN Reinforced Nanocomposites Through Laser Shock Peening

2019 ◽  
Author(s):  
J. Joel ◽  
M. Anthony Xavior
Keyword(s):  
Powder Metallurgy ◽  
Surface Properties ◽  
Squeeze Casting ◽  
Matrix Material ◽  
Research Work ◽  
Friction Material ◽  
Laser Shock Peening ◽  
Laser Shock ◽  
Wear Properties ◽  
Shock Peening

Abstract In this research work, LM6 Aluminum alloy based metal matrix composites reinforced with varying amounts (0.2, 0.4, 0.6 and 0.8 wt%) of boron nitride (BN) having 10 to 30 nanometers average size were developed by using powder metallurgy and squeeze casting routes. The mechanical and tribological properties are analyzed for the samples developed through the two different routes and the influence of the process on the properties is discussed. Thus developed nano composite is studied for the effect of weight percentage addition of nano H-BN particle on the bulk and surface properties. Mechanical testing and advanced characterization methods are used to study the effect of the nano H-BN addition to the matrix material and to evaluate the composite for its suitability as a potential friction material used in strategic sectors. It has been inferred that the presence of nano H-BN have improved the bulk and surface properties. Further, it has been established that the powder metallurgy route has some favorable results when compared to squeeze casting in terms of certain properties. Thus fabricated composites were subjected to laser shock peening process to study its impact on the surface and wear characteristics. The 0.6 wt% H-BN reinforced composites fabricated separately by Powder metallurgy and Squeeze casting method are exposed to laser shock peening process and it was inferred that there is a significant improvement on the surface and wear properties when compared to normal specimen.

Sign in / Sign up

Export Citation Format

Share Document