摘要
利用UMT-2型摩擦磨损试验机研究了T6态Al-10Si-5Cu-0.75Mg合金的干滑动摩擦磨损性能,采取SEM、XRD、EDS等方法分析了合金在不同转速和载荷下的摩擦磨损行为。结果表明:合金的磨损率随转速和载荷的增加而增大,但在800 r/min的高转速下仍具有良好的耐磨性,15 N高载荷时的磨损率相对于5 N低载荷时只增加了291%,仍属于轻微磨损;摩擦系数的平均值在0.35～0.40范围内变化,且随时间的变化不大,具有较高的稳定性;另外,磨损机制由低速轻载时的磨粒磨损、粘着磨损向高速重载时的剥层磨损、氧化磨损转变。
The dry sliding friction and wear test of T6 treated Al-10 Si-5 Cu-0.75 Mg alloy was performed using UMT-2 tribometer. The wear mechanisms of the alloy under different loads and revolving speeds were analyzed by SEM, XRD and EDS. The results reveal that the wear rate of Al-10 Si-5 Cu-0.75 Mg alloy increases with the increase of the revolving speed and applied load. However, under a high revolving speed of 800 r/min, Al-10 Si-5 Cu-0.75 Mg alloy still has good wear resistance. The wear rate of the Al-10 Si-5 Cu-0.75 Mg alloy under 15 N applied load increases only by 291% compared with under 5 N applied load, which is mild wear. The average friction coefficient changes from 0.35 to 0.40, and the change is small over time, which indicates a strong stability. Meanwhile, as t he applied load increases, the wear mechanism changes from the abrasive wear and adhesive wear at low applied speed to the delamination wear and oxidative wear at high applied speed.
作者
刘光磊
李玉山
李超
赵国师
司乃潮
Liu Guanglei;Li Yushan;Li Chao;Zhao Guoshi;Si Naichao(Jiangsu University,Zhenjiang 212013,China)
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2019年第2期620-625,共6页
Rare Metal Materials and Engineering
基金
江苏省博士后科研资助计划(1601055C)
江苏省科技型企业技术创新资金(BC2012211)
江苏大学高级人才科研启动基金(14JDG126)
