Preparation of wearable Al-20Pb alloy by powder milling and extrusion densification

作者：Fang WB^*; Wang X; He WX; Wang ED

来源：Transactions of Nonferrous Metals Society of China, 2005, 15: 157-161.

• Al-Pb alloys
• mechanical milling
• extrusion
• wear

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 6 h, the composite powder possesses fine laminar structures, good plasticity, and it is easy to densify. By extruding the composite powder ball milled for 6 h 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.

• 出版日期2005-4
• 单位哈尔滨工业大学