Investigating the wear characteristics of metal matrix composite coating deposited on AA5083 Al-alloy by laser surface engineering technique
Creators
- 1. Research institute of Surface Engineering, Taiyuan University of Technology, Taiyuan 030024 Shanxi, China
- 2. Department of Mechanical Engineering, Faculty of Engineering, University Malaya Pahang, 26600, Malaysia
- 3. Department of Engineering Science, Pakistan navy engineering college (nust) PNS johar Karachi, Pakistan
- 4. College of Mechanical Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi China
- 5. Department of Environmental Science and Chemical Engineering, Shaanxi University of Science and Technology, Shaanxi, China
Description
Abstract: Laser composite surfacing technique is an emerging field of surface engineering that has been applied in automotive, aerospace and manufacturing industries. This technique provides inherent advantages of robust and localized processing. In addition, it allows for materials researchers to explore the potential combination of various materials. In this research work, laser composite surfacing of Ni-WC-TiO2 has been deposited on AA5083 wrought aluminium alloy. The microstructure, mechanical and tribological properties were evaluated by scanning electron microscopy integrated with energy dispersive x-ray spectroscopy and ball on plate tribo-meter. Laser composite surfacing led to the formation of Al-Ni based intermetallic matrix phases. It was observed that the wear resistance in-terms of weight loss was improved to about 4.1 times and the friction coefficient was reduced to about 37.5 % when compared with the Al-Si substrate. The wear mechanism of the substrate was reduced from severe adhesive oxidative to that of mild abrasive.
Keywords: Laser surfacing, metal matrix composite, tribological properties, wear mechanism
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