Austempering AISI 5160Public
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This report discusses the result of different austempering holding times and their effect on the material's hardness, ductility and yield strength. AISI 5160 steel samples were heated until they were entirely austenite and then subjected to the austempering process, submerged in a 600°F salt bath for 1, 2, 5, 30, or 90 minutes depending on the sample. Some samples were also heat-treated using water quenching and annealing for comparison. The samples were then cut, ground, and polished using standard sample preparation methods for analysis using optical microscopy, scanning electron microscopy, and x-ray diffraction. Separate samples in the form of tensile testing bars were prepared similarly. Vickers microhardness, Rockwell hardness, and tensile testing was performed.
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