Journal
OPTICS AND LASERS IN ENGINEERING
Volume 55, Issue -, Pages 237-242Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.optlaseng.2013.11.014
Keywords
Laser treatment; Microstructure; Magnesium alloys; Wear
Categories
Funding
- Project 985-Bionic Engineering Science and Technology Innovation of Jilin University
- National Natural Science Foundation for Youths [51005097]
- Research Fund of Young Scholars for the Doctoral Program of Higher Education of China [20100061120074]
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We investigate the effects of laser surface remelting on the wear resistance of the AZ91D magnesium alloy. A CO2 continuous laser was used to treat the samples. The sample surface was strengthened by laser-treated area in the shape of stripes. The wear resistance was improved by marked microstructural characteristics, due to the notable effect of laser treatment, such as the grain refinement and very small sized beta-Mg17Al12 dendrite. The microhardness was increased up to 130 HV. And the wear volume loss was reduced by similar to 70%. The variations in some laser parameters, the output power and the laser scanning speed, also influenced the microstructure and related wear resistance. (C) 2013 Elsevier Ltd. All rights reserved.
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