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Effect of Laser Cladding Al Ni TiC Powder on Microstructure and Properties of Aluminum Alloy
College of Materials Engineering, Shanghai University of Engineering Science, Shanghai, China
College of Materials Engineering, Shanghai University of Engineering Science, Shanghai, China
College of Materials Engineering, Shanghai University of Engineering Science, Shanghai, China
College of Materials Engineering, Shanghai University of Engineering Science, Shanghai, China
- 1 College of Materials Engineering, Shanghai University of Engineering Science, Shanghai, China
- 2 College of Materials Engineering, Shanghai University of Engineering Science, Shanghai, China
- 3 College of Materials Engineering, Shanghai University of Engineering Science, Shanghai, China
- 4 College of Materials Engineering, Shanghai University of Engineering Science, Shanghai, China
Journal of Minerals and Materials Characterization and Engineering·Volume 05 (2016)·Pages 29–38·Published 16 December 2016·DOI10.4236/jmmce.2017.51003
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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.
KeywordsAluminum AlloyLaser CladdingTiC PowderMicrostructureCorrosion Resistance
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