Effect of silicon content on the microstructure and properties of Fe–Cr–C hardfacing alloys
Source abstract
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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Research context
OpenAlex topics: Metal Alloys Wear and Properties · Advanced materials and composites · High Entropy Alloys Studies
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