摘要
采用销盘式磨损试验机对3Cr3Mo2V铸钢和3Cr13钢在环境温度200℃和400℃进行干滑动磨损试验.研究结果表明:摩擦氧化物对高温磨损行为和磨损机制有显著的影响,而摩擦氧化物的减磨作用取决于其数量和基体状况,并与钢的成份和显微组织密切相关.3Cr3Mo2V铸钢在200℃形成少量摩擦氧化物,对于回火屈氏体和回火马氏体可以完全阻止金属-金属粘着,为氧化轻微磨损;对于回火索氏体,由于基体硬度低导致大量塑性变形,加速氧化物剥落,为氧化磨损;3Cr13钢中高的铬含量阻碍摩擦氧化物的形成,200℃为粘着磨损,400℃由于基体的热软化,为氧化磨损.回火屈氏体磨损量最低,回火索氏体最高.
Dry sliding wear tests of 3Cr3Mo2V cast steel and 3Cr13 steel were performed at 200 ℃ and 400 ℃ on a pin-on-disk wear tester.The results show that tribo-oxides present marked influence on wear behavior and mechanism.The wear-reduced effect of tribo-oxides depends on content and substrate.For tempered troostite and martensite of 3Cr3Mo2V cast steel,a small amount of tribo-oxides can entirely avoid metal adhering metal to form oxidative mild wear at 200 ℃.However,for tempered sorbite,oxidative wear is prevailed due to the accelerating delamintion of tribo-oxides caused by plastic deformation in soft matrix.High Cr-content in 3Cr13 steel impedes the formation of tribo-oxides.Adhesive wear is predominant wear mechanism at 200 ℃,while oxidative wear is predominated at 400 ℃ because of thermal softening of matrix.The wear loss of tempered troosite is the lowest,while the tempered sorbite is the highest.
出处
《江苏大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2013年第6期709-714,共6页
Journal of Jiangsu University：Natural Science Edition
基金
国家自然科学基金资助项目(51071078)
江苏省自然科学基金资助项目(BK2012250)
江苏省新型环保重点实验室开放课题基金资助项目(AE201035)
关键词
钢
显微组织
摩擦磨损
高温
氧化磨损
steel
microstructure
friction and wear
elevated-temperature
oxidative wear
