Laser surface cladding of a ZM5 magnesium alloy with nano-Al2O3

被引：0

作者：

Chen, Changjun ^{[1
,2
]}

Zhang, Min ^{[2
]}

Chang, Qingming ^{[2
]}

Zhang, Shichang ^{[2
]}

Ma, Hongyan ^{[3
]}

机构：

[1] State Key Laboratory of Gansu Advanced Non-Ferrous Metal Materials, Lanzhou University of Technology

[2] Key Laboratory for Ferrous Metallurgy and Resources Utilization, College of Materials and Metallurgy, Wuhan University of Science and Technology

[3] Department of Materials Engineering, Shenyang Institute of Aeronautical Engineering

来源：

Zhongguo Jiguang/Chinese Journal of Lasers | 2008年 / 35卷 / 11期

关键词：

Laser cladding; Laser technique; Magnesium alloy; Nano-Al[!sub]2[!/sub]O[!sub]3[!/sub; Nano-cermic coating; Wear;

D O I：

10.3788/CJL20083511.1752

中图分类号：

学科分类号：

摘要：

Mg alloy has become promising materials for industrial structural and transport applications due to their attractive properties such as low density, high specific strength, good electrical and thermal condivity. The poor wear property is the major concern when it is subjected to motion in automotive or other engine components. To improve its wear property, many different surface engineering methods have been developed. Laser surface cladding technology is a very promising one among these methods. Nano-Al2O3 particles are dispersed on the ZM5 surface by laser surface engineering to improve its wear resistance property. Laser processing is carried out with a 500 W pulsed Nd:YAG laser by melting preplaced nano-Al2O3 particles on the surface of ZM5. Following laser processing, a detailed microstructural analysis of the surface modified layer is carried out. The microhardness of the surface layer is measured as a function of laser parameters and wear resistance property was evaluated in details. Microhardness of the surface layer is significantly improved to as high as 350 HV as compared to 100 HV of the substrate compared to the as-received specimen, the wear resistance property of the laser surface modified samples is considerably improved.

引用

页码：1752 / 1755

页数：3

共 11 条

[1] Majumdar J.D., Chandra B.R., Galun R., Et al., Laser composite surfacing of a magnesium alloy with silicon carbide, Composites Science and Technology, 63, 6, pp. 771-778, (2002)
[2] Majumdar J.D., Chandra B.R., Mordike B.L., Et al., Laser surface engineering of a magnesium alloy with Al+Al2O3, Surface and Coatings Technology, 179, 2-3, pp. 297-305, (2002)
[3] Yao J., Sun G.P., Wang H., Et al., Laser (Nd:YAG) cladding of AZ91D magnesium alloys with Al+Si+Al2O3, Journal of Alloys and Compounds, 407, 1-2, pp. 201-207, (2006)
[4] Gao Y., Wang C., Yao M., Et al., The resistance to wear and corrosion of laser-cladding Al2O3 ceramic coating on Mg alloy, Applied Surface Science, 253, pp. 5306-5311, (2007)
[5] Hua G., Luo X., Huang Y., Et al., Microstructure and corrosion characteristics of plasma-sprayed ceramic coating by laser remelting of nano-Al2O3 modifying, Chinese J. Nonferrous Metals, 14, 6, pp. 934-938, (2004)
[6] Hua G., Huang Y., Zhao J., Plasma-sprayed ceramic coating by laser cladding of Al2O3 nano-particles, Chinese J. Nonferrous Metals, 14, 2, pp. 199-203, (2004)
[7] Zhang J., Tian Z., Zhao J., Et al., Study on laser cladding of nano-Al2O3 composite coating, Laser Journal, 25, 3, pp. 67-69, (2004)
[8] Li H., Wang M., Zhao J., Et al., Microstructure character of aluminium alloy coating with Nd:YAG pulsed laser SiC composition, Chinese J. Lasers, 31, 6, pp. 765-768, (2004)
[9] Chen C., Zhang M., Chang Q., Et al., Laser cladding of ZM5 magnesium base alloy with Al+Nano-SiC powder, Lasers in Engineering, 18, pp. 85-94, (2008)
[10] Liu W., Rao Y., Ran Z., Et al., Novel Fabry-Perot fiber-optica refractive-index sensor based on laser micromachining, Acta Optica Sinica, 28, 7, pp. 1400-1404, (2008)

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