TITLE:
Effect of Laser Cladding Al Ni TiC Powder on Microstructure and Properties of Aluminum Alloy
AUTHORS:
Xiaolin Zhang, Kemin Zhang, Jinxin Ma, Yu Wang
KEYWORDS:
Aluminum Alloy, Laser Cladding, TiC Powder, Microstructure, Corrosion Resistance
JOURNAL NAME:
Journal of Minerals and Materials Characterization and Engineering,
Vol.5 No.1,
December
20,
2016
ABSTRACT: In this paper, Al/Ni/TiC powders were mixed on the surface of A380 aluminum alloy, by selecting appropriate laser parameters; the cladding layer with good adhesion to the substrate was obtained. The microstructure and properties of the cladding layer under different laser parameters were analyzed. The results show that: the phase composition of the cladding layer is mainly composed of TiC, Al, Ni, C and Ti phases. The hardness of the cladding region is up to 173.3 HV, which is about 2.9 times the matrix (–59.1 HV). The corrosion voltage (–1.8 V) of the cladding layer shifted significantly from the corrosion potential (–1.18 V), the corrosion current density increased, the resistance value decreased and the diameter of the capacitor arc decreased; all these phenomena indicate that the corrosion resistance of the cladding layer is decreased.