摘要
对含碳1.4wt%和含铬15wt%的Fe-C-Cr合金进行了退火处理。借助光学显微镜、扫描电镜、XRD,通过MMU-5G型屏显式材料端面摩擦磨损试验机研究。结果表明,在铸造条件下,基材高铬钢组织由初生奥氏体枝晶和(Fe,Cr)7C3、(Fe,Cr)23C6合金碳化物组成。在定转速r=100r/min,载荷分别为50N、100N、150N、200N、250N的情况下,随着载荷的逐渐增大,滑动摩擦系数均不断下降,在载荷较小时其下降幅度较明显,随着载荷的增大,下降幅度变化趋于平缓。
Fe-C-Cr alloy with 1.4wt% carbon and 15wt% chromium has been annealed. By use ol an optical microscope, scanning electron microscopy and XRD, MMU-5G screen material face friction and wear tester, it is obtained that high-chromium steel is made up of primary austenite dendrites and （Fe, Cr）7C3, （Fe, Cr）23C6 carbides under casting condition. The coefficient of sliding friction becomes smaller when the load increases gradually, and the reducing is obvious when the load is smaller while the reducing is gentle when the load is bigger under the condition that constant Speed r = 100r/min, the load is respectively, for 50N, 100N, 150N, 200N, 250N.
出处
《锻压装备与制造技术》
2012年第5期84-87,共4页
China Metalforming Equipment & Manufacturing Technology
