Effect of temperature on the sliding wear behavior of laser surface alloyed Ni-base on Al-Mg-Si alloy
Journal
Applied Surface Science
Journal Volume
253
Journal Issue
3
Pages
1404-1410
Date Issued
2006
Author(s)
Abstract
The surface microstructures of 6061 Al-Mg-Si alloy coated with laser surface alloyed (LSA) Ni-Cr-B-Si powder and their sliding wear performance have been investigated. Experimental results show that there are three regions, as grayish region (G.R.), dark region (D.R.) and bright region (B.R.), in the pool. The Al 3 Ni and Al 3 Ni 2 compounds appear in the G.R. and D.R., respectively. The Al-Ni-Cr amorphous structure can be observed in the B.R. The hardness of the LSA specimens is much higher than the Al-matrix. Compared with the Al-matrix, the LSA specimens have excellent sliding wear performance. They have lower friction coefficient and wear rate. The critical temperature of sliding wear resistance of LSA specimen is higher than that of Al-matrix by about 50 °C. The stress relief during thermal treatment will slightly reduce the hardness and the wear resistance of LSA specimens, especially at testing temperature >200 °C. © 2006 Elsevier B.V. All rights reserved.
Publisher
Elsevier
Type
journal article