IMPROVEMENT IN MICROSTRUCTURE PERFORMANCE OF THENiCrBSiREINFORCED COATING ON TA15 TITANIUM ALLOY

Li Peng ()
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Li Peng: Mechanical and Electronic Engineering Department, Shandong Agricultural Administrators College, Jinan 250100, P. R. China

Surface Review and Letters (SRL), 2012, vol. 19, issue 05, 1-5

Abstract: This work is based on the dry sliding wear ofNiCrBSireinforced coating deposited on TA15 titanium alloy using the laser cladding technique, the parameters of which were such as to provide almost crack-free coatings with minimum dilution and very low porosity. SEM results indicated that a laser clad coating with metallurgical joint to the substrate was formed. Compared with TA15 substrate, an improvement of the micro-hardness and wear resistance was observed for this composite coating. Rare earth oxideY2O3was beneficial in producing of the amorphous phases in laser clad coating. With addition ofY2O3, more amorphous alloys were produced, which increased the micro-hardness and wear resistance of the coating.

Keywords: TA15 titanium alloy; sliding wear; microstructures; laser processing (search for similar items in EconPapers)
Date: 2012
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DOI: 10.1142/S0218625X12500473

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