Friction and wear properties of 10CrMn2NiSiCuAl icebreaker steel plates effected by temperature
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Abstract:
Dry reciprocating friction and wear properties of a novel icebreaker steel (10CrMn2NiSiCuAl), which is co-developed by our group and BaoSteel Co., Ltd, were investigated using a UMT-3 Tribolab multi-specimen tester at different temperature. In this study, the wear scar morphologies and friction cross sections of the tested samples before and after the friction tests were recorded by coherence Scanning Interferometry.The surface morphologies, composition of worn surfaces and wear debris were characterized by scanning electron microscope, energy dispersive spectrometer and X-ray diffusion. Results show that the friction and wear properties are obviously affected by temperature. The wear mechanism is mainly fatigue failure accompanied with oxidation and adhensive wear at 20℃,which turn to abrasive wear and fatigue wear when the temperature decreases. The transition layer on the worn scar formed by Fe2O3 and Fe3O4 reduces the friction coefficient and wear rate. The declamation and spherical wear debris occur on the worn surface when the temperature decreases to -20℃, which aggravates the wear rate quickly.
