【摘 要】
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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 mic
【机 构】
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Daneshpajoohan Pishro Higher Education Institute,Isfahan,Iran;Department of Materials Science and En
论文部分内容阅读
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.
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