Paper Title:
Influence of Laser Surface Melting on Wear Resistance of AZ91D Magnesium Alloy
  Abstract

In the present study, an attempt has been made to improve the surface hardness and wear resistance of magnesium alloy AZ91D by laser surface melting (LSM) with a 2kW continuous wave CO2 laser. The microstructure of the laser surface melted zone consists of fine dendrites with an average grain size of less than 10μm. Micro hardness of the melted zone was improved to 70-85HV as compared to 53HV of the substrate. The wear behavior of the laser surface melted layer was investigated using a ball-on-flat apparatus under dry sliding condition. Compared with the as-received AZ91D, the wear volume of the laser surface melted layer was decreased by 51%, the wear resistance of the laser surface melted layer was improved significantly.

  Info
Periodical
Edited by
Dunwen Zuo, Hun Guo, Hongli Xu, Chun Su, Chunjie Liu and Weidong Jin
Pages
607-611
DOI
10.4028/www.scientific.net/AMM.33.607
Citation
J. F. Chen, X. C. Li, R. X. Li, L. D. Shen, "Influence of Laser Surface Melting on Wear Resistance of AZ91D Magnesium Alloy", Applied Mechanics and Materials, Vol. 33, pp. 607-611, 2010
Online since
October 2010
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