稀土对新型多元铝青铜磨损行为的影响  

Effect of Rare Earth on Abrasion Resistance of Multi-aluminum Bronze

作　　者：万浩[1] 司乃潮[1] 刘光磊[1] 李萌[1] 许超[1] 许亮[1] 

机构地区：[1]江苏大学材料科学与工程学院,江苏镇江212013

出　　处：《稀土》2015年第4期81-87,共7页Chinese Rare Earths

基　　金：科技部国家火炬计划(2011GH040562)

摘　　要：研究了稀土对铸CuAl9Fe4Ni4Mn2合金的显微组织、力学性能、不同载荷下磨损量大小和磨面成分变化的影响,利用扫描电镜和能谱仪对合金的显微组织、磨面形貌及磨面成分进行了观察与分析。结果表明,少量的稀土即可使合金表现出十分优异的力学性能,进而显著提高了合金的耐磨性能。与未加稀土的合金相比,加入0.08%稀土的合金在600 N、900 N、1200 N三种载荷下,磨损量分别减少了29 mg、32 mg、64 mg。随着载荷的变化,未加稀土合金呈现不同的磨损机理,磨面O、C、Fe、Al含量变化很大;而添加适量稀土合金在三种载荷下有着稳定的磨损机理,且同种载荷下磨面O、C、Fe、Al含量变化远小于未添加稀土合金。可见,稀土对铸CuAl9Fe4Ni4Mn2合金微观组织的优化作用可以显著提高合金的性能。The effects of RE on microstructure, mechanical behavior, abrasion loss and wear surface composition changes under different load of casting Cu -9A1 -4Fe -4Ni -2Mn alloy were investigated by means of scanning electron microscope （SEM） and energy disperse spectroscopy（EDS）. The result shows that the role of RE make the alloy show excellent mechani- cal properties which could obviously improve the wear resistance of the alloy . Compared to the alloy without RE under loads of 600N,90ON,120ON,weight loss of the alloys with 0.08% RE reduce 29 mg,32 mg,64 mg respectively. With the change of load,wear mechanism of alloys without RE show different and content of O, C, Fe, Al elements on wear surface vary greatly while the alloy with 0.08% RE addition presents the same and elements content change little. So we can find that microstruc- ture optimization by RE makes the alloy show excellent properties.

关 键 词：稀土 铝青铜合金 显微组织 力学性能 磨损性能 

分 类 号：TG146.11[一般工业技术—材料科学与工程] TG115.8[金属学及工艺—金属材料]