Abstract
In order to apply low-carbon weld steel modified by minor and trace element doping to tribological products, the friction and wear properties of the low-carbon steel and conventional carbon steel were investigated by two kinds of sliding tests, hardness measurement and microstructure observation. The sliding test result showed that the initial wear of the minor and trace element-doped low-carbon steel was higher than that of conventional carbon steel. The hardness of the conventional steel was measured to be hardened faster than the minor and trace element-doped steel. Microstructure observations showed that the grain size of the conventional steel became smaller after the sliding test. These experimental result suggested that the change in the grain size of the conventional steel promoted the increasing hardness of the sliding surface. In case of the element doped steel, it is considered that the tribo-oxidation on the sliding surface improved the wear property.
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