scholarly journals Research on Corrosion Control Factors of 2A02 Aluminum Alloy of Different States before and after Laser-Shock-Processing

2018 ◽  
Vol 381 ◽  
pp. 012006
Author(s):  
Yongfeng Ren ◽  
Lingfeng Zhang ◽  
Yi Xiong ◽  
Fengzhang Ren
Keyword(s):  
Aluminum Alloy ◽  
Laser Shock ◽  
Corrosion Control ◽  
Laser Shock Processing ◽  
Control Factors ◽  
Before And After ◽  
Shock Processing

Effect of Laser Shock Processing (LSP) on the Fatigue Resistance of an Aluminum Alloy

1999 ◽  
Vol 122 (1) ◽  
pp. 104-107 ◽  
Author(s):  
Tang Yaxin ◽  
Zhang Yongkang ◽  
Zhang Hong ◽  
Yu Chengye
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Life ◽  
Polyvinylidene Fluoride ◽  
Surface Hardness ◽  
Resistance Mechanisms ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Fatigue And Fracture ◽  
Before And After ◽  
Shock Processing

The laser shock induced stress wave is described and measured with a polyvinylidene fluoride (PVDF) transducer. A principle for selecting laser parameters is proposed. A small sized laser with a high power is used for Laser Shock Processing (LSP). The fatigue life of the aluminum alloy 2024T62 is greatly improved after LSP. With 95% confidence, the mean fatigue life of LSP specimens is 4.5–9.8 times that of unshocked ones. The fatigue and fracture resistance mechanisms of LSP such as the variation of the surface hardness, the microstructure and the fracture section of specimens before and after LSP are analyzed. [S0094-4289(00)01601-7]

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

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

Experiment of Laser Shock Processing on AISI 8620 Alloy Steel

2011 ◽  
Vol 464 ◽  
pp. 478-481
Author(s):  
R.H. Shen ◽  
J.Z. Lu ◽  
J.W. Zhong ◽  
L. Zhang ◽  
Kai Yu Luo ◽  
...  
Keyword(s):  
Residual Stress ◽  
Surface Hardness ◽  
Base Material ◽  
High Amplitude ◽  
High Energy ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Before And After ◽  
Shock Peening ◽  
Shock Processing

Laser shock processing (LSP, also known as Laser shock peening) is applied by using a high energy pulsed laser to create a high amplitude stress wave or shock wave on the surface to be treated. LSP is proved to be superior to conventional treatments such as shot peening in many engineering products. This paper focuses on Laser shock processing and its effects on mechanical properties of material AISI 8620 alloys steel. Experiment results indicated that compared with base material, the surface hardness increased by 13.8%, and compressive residual stress increased by 521%. Statistical method was introduced to analyze hardness and residual stress change before and after the LSP.

Elastic properties modification in aluminum alloy induced by laser-shock processing

2001 ◽  
Vol 297 (1-2) ◽  
pp. 138-143 ◽  
Author(s):  
Y.K Zhang ◽  
X.R Zhang ◽  
X.D Wang ◽  
S.Y Zhang ◽  
C.Y Gao ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Elastic Properties ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Shock Processing
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