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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers. Part L, Journal of Materials: Design and Application >Processing and characterization of composite cladding through microwave heating on martensitic steel
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Processing and characterization of composite cladding through microwave heating on martensitic steel

机译：马氏体钢微波加热复合熔覆层的加工与表征

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摘要

The composite wear resistant cladding of nickel-based powder matrix and 10% SiC powder as reinforced was developed through microwave hybrid heating on martenisitic stainless steel (SS-420) substrate. The development of the clad has been carried out by using a domestic microwave applicator of frequency 2.45 GHz and 900W power level. The microstructural and mechanical characterizations of the developed clad were carried out by using scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction, and Vicker's microhardness analysis. Results revealed that clads of approximately 1.25mm thickness were developed with significantly low porosity (approximate to 1.10%). The scanning electron microscopic results show that the microstructure of clad exhibits typical cellular-like structure. The metallurgical bonding between clad and substrate surface was obtained with partial dilution. The complex carbides of chromium and silicides of chromium, iron, and nickel phases were identified in the clad region by XRD study, which may enhance the Vicker's microhardness of the clads significantly. The average Vicker's microhardness of the developed clad was in the range of 652 +/- 90 HV.
机译：通过在马氏体不锈钢（SS-420）衬底上进行微波混合加热，开发了镍基粉末基体和10％SiC增强复合材料复合耐磨覆层。使用频率为2.45 GHz和900W功率水平的家用微波辐射器进行了包覆层的开发。通过使用扫描电子显微镜，能量色散谱，X射线衍射和维氏显微硬度分析，对开发的复合层进行了显微组织和力学表征。结果显示，厚度约为1.25mm的包层的孔隙率极低（约1.10％）。扫描电子显微镜结果表明，包覆层的微观结构表现出典型的细胞状结构。通过部分稀释获得包层和基底表面之间的冶金结合。通过X射线衍射研究，在包层区域发现了铬的复杂碳化物和铬，铁和镍相的硅化物，这可能会显着提高包层的维氏显微硬度。所开发的覆层的平均维氏显微硬度在652 +/- 90HV的范围内。

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