Abstract
In this study, the surface of St52 steel was alloyed with preplaced powders 55Fe39Cr6C, 49Fe39Cr6C6Si, and 45Fe39Cr6C10Si using a tungsten-inert gas as the heat source. Following surface alloying, conventional characterization techniques, such as optical microscopy, scanning electron microscopy, and X-ray diffraction were employed to study the microstructure of the alloyed surface. Microhardness measurements were performed across the alloyed zone. Room-temperature dry sliding wear tests were used to compare the coatings in terms of their tribological behavior. It was found that the as-deposited coatings contained higher volume fractions of carbides (Cr7C3). The presence of 6%Si in the preplaced powders caused an increase in microhardness and wear resistance.
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The authors wish to thank Isfahan University of Technology (Iran) for their financial support through Grant No. 1MSA851.
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Azimi, G., Shamanian, M. Effect of silicon content on the microstructure and properties of Fe–Cr–C hardfacing alloys. J Mater Sci 45, 842–849 (2010). https://doi.org/10.1007/s10853-009-4008-4
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DOI: https://doi.org/10.1007/s10853-009-4008-4