Microstructure and wear resistance of composite coating by laser cladding Ni60A/B 4 C pre-placed powders on Ti-6Al-4V substrate
Source abstract
Abstract
Abstract The composite coatings were fabricated by laser cladding Ni60A/B 4 C pre-placed powders on the surface of Ti-6Al-4V alloy for improving wear resistance and hardness of the substrate. In this research, the composite coatings were studied by means of X-ray diffraction, scanning electron microscope and energy dispersive spectrometer. The sliding wear tests were performed using MM200 wear test machine. The hardness of the coatings was tested by HV-1000 hardness tester. After laser cladding, it was found that there was a good metallurgical bond between the laser cladding coating and Ti-6Al-4V substrate. The composite coatings were mainly composed of the matrix of γ-Ni and a little Ni 3 Ti and the reinforcements of TiB 2 , TiC and CrB. The hardness of the sample of Ni60A-5B 4 C was approximately 2.5–3.5 times that of the Ti-6Al-4V substrate. The hardness of the sample of Ni60A-10B 4 C was 30% higher than that of sample 1. The wear resistance of samples 1 and 2 were 11 times and 10 times that of the substrate, respectively.
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Research context
OpenAlex topics: High Entropy Alloys Studies · Titanium Alloys Microstructure and Properties · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Suzhou Institute , Shandong University , Suzhou 215123 , P.R. China
Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials , Ministry of Education, School of Materials Science and Engineering , Shandong University , Ji’nan 250061 , Shandong, P.R. China
Key Laboratory of High-efficiency and Clean Mechanical Manufacture (Shandong University) , Ministry of Education, School of Mechanical Engineering , Shandong University , Ji’nan 250061 , Shandong, P.R. China
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