| Cite this article as: |
Hossein Hosseini-Tayeb and Seyed Mahdi Rafiaei, Enhanced microstructural and mechanical properties of Stellite/WC nanocomposite on Inconel 718 deposited through vibration-assisted laser cladding, Int. J. Miner. Metall. Mater., 29(2022), No. 2, pp. 327-334. https://doi.org/10.1007/s12613-020-2211-0
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Seyed Mahdi Rafiaei E-mail: rafiaei@gut.ac.ir
通过具有不同激光参数的振动辅助激光熔覆，将 Stellite-21/WC 纳米粉末沉积在 Inconel 上。 采用光学和扫描电子显微镜、硬度测量和磨损表征来了解纳米复合材料的微观结构和力学性能。 研究结果表明，改变冷却速率对包覆复合材料的微观结构产生显着影响。 此外，当激光功率从 150 W 增加到 250 W 会增加热输入和稀释度。 在 250 W 的高激光功率下，扫描速率和送粉速率会影响稀释度。当加入 WC 纳米颗粒作为增强材料时，稀释幅度加剧，同时硬度值从 HV 350 增加到 HV 700。磨损特性表明， 含有 3wt% WC 纳米颗粒的复合材料具有最高的耐磨性。
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 microstructural and mechanical behaviors of the nanocomposites. Results showed that varying the cooling rate exerted remarkable effects on the microstructure 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 reinforcement, the dilution magnitude intensified while the hardness value increased from HV 350 to HV 700. The wear characterizations indicated that the composites containing 3wt% WC nanoparticles possessed the highest wear resistance.
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