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Dry sliding tribological properties and worn subsurface microstructures were investigated in Cu–Al alloys with Al concentrations of 0–2.2wt%. It was found that the wear volume of Cu–Al alloys decreases with an increasing Al content below 0.5wt%, and increases at higher Al contents above 0.5wt%. For each sample, a worn subsurface layer is generated consisting of dynamic recrystallization (DRX) structures...
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