Preparation of wearable Al-20Pb alloy by powder milling and extrusion densification
来源期刊：中国有色金属学报(英文版)2005年第z2期
论文作者：房文斌 王新 贺文雄 王尔德
文章页码：157 - 161
Key words：Al-Pb alloys； mechanical milling； extrusion； wear
Abstract: Composite powder of Al-20Pb alloy was prepared by mechanical milling. The microstructure of the powder was analyzed by electronic probe microscopy. Compaction of the powder was also performed. The results show that after ball milling for 6h, the composite powder possesses fine laminar structures, good plasticity, and it is easy to densify. By extruding the composite powder ball milled for 6h with an extrusion ratio of 4, the Al-20Pb alloy with a relative density of 97%, a porosity of 3% and fine and homogenously distributed Pb phase was obtained. The results of wear and friction test indicate that a lubricating layer with a friction coefficient of about 0.4 forms on the friction surface, and the wear model is slight oxidation wear.
