Stellite-21/WC nanopowders were deposited on Inconel through vibration-assisted laser cladding with different laser parameters. Optical and scanning electron microscopy, hardness measurements, and wear characterizations were employed to understand the microstruc-tural and mechanical behaviors of the nanocomposites. Results showed that varying the cooling rate exerted remarkable effects on the micro-structure of the as-cladded composites. Moreover, increasing the laser power from 150 W to 250 W increased the heat input and the dilutions. Dilution was affected by the scanning rate and powder feeding rate at a high laser power of 250 W. When WC nanoparticles were added as re-inforcement, the dilution magnitude intensified while the hardness value increased from HV 350 to HV 700. The wear characterizations indic-ated that the composites containing 3wt％ WC nanoparticles possessed the highest wear resistance.

Daneshpajoohan Pishro Higher Education Institute,Isfahan,Iran;Department of Materials Science and Engineering,Golpayegan University of Technology,Golpayegan,Isfahan,Iran

[1]Hossein Hosseini-Tayeb;Seyed Mahdi Rafiaei-.Enhanced microstructural and mechanical properties of Stellite/WC nanocom-posite on Inconel 718 deposited through vibration-assisted laser cladding)[J].矿物冶金与材料学报,2022(02):327-334

dilutions,inforcement,indic

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