Effect of spot diameter on corrosion resistance of aluminum alloy subjected to laser shock peening

被引：0
作者：
Luo K.-Y. [1 ,2 ]
Chen J.-C. [1 ]
Wang C.-Y. [1 ]
Lu J.-Z. [1 ]
机构：
[1] School of Mechanical Engineering, Jiangsu University, Zhenjiang
[2] College of Engineering Technology, Jiangsu University, Zhenjiang
来源：
Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) | 2021年 / 51卷 / 02期
关键词：
Aluminum alloy; Electrochemical corrosion; Laser shock peening; Residual stress; Surface roughness;
D O I：
10.13229/j.cnki.jdxbgxb20200037
中图分类号：
学科分类号：
摘要：
In order to investigate the effect of different spot diameters on the electrochemical corrosion resistance of 6061-T6 aluminum alloy subjected to laser shock peening, the surface roughness and residual stress of the alloy were measured. The cross-sectional metallographic and electrochemical corrosion experiments were carried out. Corroded specimens were observed and analyzed by scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS). Results show that laser shock peening refines the surface grains of 6061-T6 alloy, increases the surface roughness and generates a compressive residual stress. The corrosion current densities of the untreated specimen, treated specimens with 2 mm and 3 mm spot diameters were 154.5 μA/cm2, 14.70 μA/cm2 and 11.17 μA/cm2, respectively, indicating that laser shock peening effectively improves the corrosion resistance. The treated specimen with 2 mm spot diameter had worse surface topographies than that of the treated specimen with 3 mm spot diameter, resulting in the lower corrosion resistance. © 2021, Jilin University Press. All right reserved.
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页码：501 / 510
页数：9
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  • [1] Salimianrizi A, Foroozmehr E, Badrossamay M, Et al., Effect of laser shock peening on surface properties and residual stress of Al6061-T6, Optics and Lasers in Engineering, 77, pp. 112-117, (2016)
  • [2] Miao Hong, Zuo Dun-wen, Wang Min, Et al., Effect of shot peening on surface integrity of NAK80 steel, Journal of Jilin University (Engineering and Technology Edition), 41, 5, pp. 1290-1294, (2011)
  • [3] Sun Q Q, Han Q Y, Xu R, Et al., Localized corrosion behaviour of AA7150 after ultrasonic shot peening: Corrosion depth vs. impact energy, Corrosion Science, 130, pp. 218-230, (2018)
  • [4] Wang Zhi-tai, Lin Xin, Cao Yong-qing, Et al., External cooling condition effects on formation of anomalous eutectic in Ni-Sn alloy by laser remelting, Chinese J Lasers, 41, 12, pp. 91-96, (2014)
  • [5] Luo Kai-yu, Xing Yue-hua, Chai Qing-feng, Et al., Effect of laser shock peening on corrosion fatigue behaviour of 2Cr13 stainless steel, Journal of Jilin University (Engineering and Technology Edition), 49, 3, pp. 850-858, (2019)
  • [6] Wu Bian, Wang Sheng-bo, Guo Da-hao, Et al., Research of material modification induced by laser s hock processing on aluminum alloy, Acta Optica Sinica, 25, 10, pp. 1352-1356, (2005)
  • [7] Zhou Jian-zhong, Liu Hui-xia, Feng Ai-xin, Et al., Advances on the application of laser induced shock wave in metal processing, Applied Laser, 25, 1, pp. 27-31, (2005)
  • [8] Zhang Qing-lai, Wang Rong, Zhang Bing-xin, Et al., Effect of laser shock processing on mechanical properties and microstructures of AZ31 magnesium alloy, Chinese J Lasers, 42, 3, pp. 39-45, (2015)
  • [9] Wang Cheng, Lai Zhi-lin, He Wei-feng, Et al., Effect of multi-impact on high cycle fatigue properties of 1Cr11Ni2W2MoV stainless steel subject to laser shock processing, Chinese J Lasers, 41, 1, pp. 46-51, (2014)
  • [10] Wang Jiang-tao, Zhang Yong-kang, Chen Ju-fang, Et al., Effect of laser shock processing on electrochemical corrosion behavior of 7075 aluminum alloy plasma arc weldments, Chinese J Lasers, 42, 12, pp. 106-115, (2015)
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