Abstract
Wear behaviour of AM50B magnesium alloy was tested using pin-on-disc configuration with carbon steel discs as counterpart on dry-sliding conditions. Wear rates and friction coefficients were measured in a sliding velocity range of 0.1–1 m s−1 and normal force range of 10–250 N. Worn surfaces were analysed using Scanning Electron Microscope (SEM) and Energy Dispersive X-ray Spectrometer (EDS) to define the main wear mechanisms. Abrasion, adhesion, delamination, oxidation, and plastic and severe plastic deformation were observed. Wear mechanism map was proposed. Oxidation and abrasion mechanisms dominated at the lowest sliding velocities and loads. Increasing load and speed led to a combination of oxidation, delamination and adhesion. Plastic deformation and severe plastic deformation were detected for the highest applied load and sliding speeds.
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