摘要
将铸态Cu-15Ni-8Sn合金进行均匀化退火处理、固溶处理后,再在400℃下进行时效处理,时效时间为1-10h,然后采用球盘式摩擦磨损试验机研究了铸态和时效态合金在油润滑条件下的摩擦磨损性能。结果表明：时效时间对Cu-15Ni-8Sn合金摩擦因数的影响不大,时效时间为2-8h时的磨损率较低,超过8h后略有增大;时效态合金的摩擦因数比铸态合金的约降低了10%,时效态合金的最小磨损率约为铸态合金的43%;时效态合金摩擦磨损性能优于铸态合金的主要原因是前者的强度显著高于后者的。
Homogenization annealing treatment and solid solution heat treatment were carried out for as-cast Cu-15Ni-8Sn alloy,and then aging heat treatment at 400 ℃ for 1-10 h was adopted.The friction and wear properties of the alloy in as-cast state and aging state were studied under oil-lubricated conditions by means of ballon-disc wear tester.Results indicate that aging time had little effects on friction coefficient of Cu-15Ni-8Sn alloy,the alloy obtained a relative low wear rate when the aging time was 2-8hand the wear rate slightly increased when the aging time was over 8h.The friction coefficient of the aged alloy was 10%less than that of as-cast alloy,the minimum wear rate of aged alloy was about 43% of that of as-cast alloy.The cause of the friction and wear properties of aged alloy exceeding that of as-cast alloy was the aged alloy owing the higher hardness.
出处
《机械工程材料》
CAS
CSCD
北大核心
2015年第7期73-76,共4页
Materials For Mechanical Engineering
基金
广东省高等学校科技创新重点项目(2012CXZD0010)
