流变压铸与液态压铸成形镁合金摩擦磨损性能的比较  

Comparation of Friction and Wear Characteristics of Magnesium Alloy AZ91D Formed by Rheo-diecasting and Die Casting Process

作　　者：李东南[1] 范有发[1] 田君[1] 

机构地区：[1]福建工程学院材料科学与工程系

出　　处：《特种铸造及有色合金》2008年第S1期392-395,共4页Special Casting & Nonferrous Alloys

基　　金：福建省青年人才科技创新基金项目(2006F3004);福建省自然科学基金计划资助项目(E0640002);福建省教育厅科技项目(J06030)

摘　　要：采用MM-200型磨损试验机,研究了干滑动摩擦条件下液态压铸成形和流变压铸成形镁合金AZ91D的摩擦磨损性能。试验结果表明,在相同试验条件下,流变压铸成形镁合金AZ91D的磨损速率和摩擦系数均比液态压铸成形试样的要高。两种材料的磨损速率和摩擦系数均随着载荷的增大而增大,当载荷增大到250N之后,其磨损质量损失反而降低。随着磨损时间的增加,材料的磨损质量损失成线性比例迅速增加,摩擦系数则基本保持不变。对磨偶件的转速越高,压铸镁合金的磨损质量损失越大,摩擦系数越小。The dry sliding friction and wear characteristics of magnesium alloy AZ91D,which were formed by rheo-diecasting and die casting process, were studied at different load、rotate speed and wear time by using an MM-200 abrasion tester. The results show that the wear rate and friction coefficient of magnesium alloy formed by rheo-diecasting process are higher than that of magnesium alloy formed by die casting process in the same expeiment condition. The wear rate and friction coefficient of magnesium alloy enhanc...

关 键 词：液态压铸 流变压铸 镁合金 摩擦磨损 

分 类 号：TG115.58[金属学及工艺—物理冶金]