가스분무 공정에 의한 과공정 Al-Si 합금 분말 압출재의 마모 거동

Abstract

Wear behaviors of gas atomized and extruded Al-Si alloys were investigated using the dry sliding wear apparatus. The wear tests were conducted on Al-Si alloy discs against cast iron pins and vice versa at constant load of 10N with different sliding speed of 0.1, 0.3, 0.5 m/s. In the case of Al-Si alloy discs slid against the cast iron pins, the wear rate slightly increased with increasing the sliding speed due to the abrasive wear occurred between Al-Si alloy discs and cast iron pins. Conversely, in the case of cast iron discs against Al-Si alloy pins, the wear rate decreased with increasing the sliding speed up to 0.3 m/s. However, the wear rate increased with increasing the sliding speed from 0.3 m/s to 0.5 m/s. It could be due to adhesive wear behavior and abrasive wear behavior between cast iron discs and Al-Si alloy pins.