摘要
研究了稀土铈含量(质量分数)为0、0.05%、0.15%、0.25%的Cu-Al-Ni-Fe-Mn铝青铜的组织变化,并采用M-2000型磨损试验机进行了对比试验。结果表明,适量加入稀土铈能有效地细化显微组织,提高合金的强度、延展性和耐磨性,在Cu-Al-Ni-Fe-Mn合金中添加0.15%稀土铈时,铝青铜晶粒细小、圆润,分布均匀,无论是在油润滑条件还是干摩擦条件下材料耐磨性均达到最好;当稀土铈添加量达到0.25%时,角块状、细片状组织增加,晶界粗化,铝青铜耐磨性呈下降趋势。
Effects of varied Ce addition, such as 0. 0.05% ,0.15%, 0.25% in weight, on microstructure and wear resistance of Cu-Al-Ni-Fe-Mn aluminum bronze were investigated by OM （optical microscopy）, SEM （scanning electron microscopy） and M-2000-type abrasion tester. The results indicate that the addition of proper Ce content can effectively refine the microstructure and improve the tensile strength, ductility and wear resistance. With 0.15% Ce addition, fine and round grain with uniform distribution can be observed in the Cu-Al-Ni-Fe-Mn alloy, and desirable wear resistance can be obtained. However, with 0.20% Ce addition, the polygonal and lamellar structure are increased in the alloy with the coarseness of grain boundary, leading to the deterioration of wear resistance of the alloy materials.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2013年第7期672-675,共4页
Special Casting & Nonferrous Alloys
基金
国家科技型中小企业技术创新基金资助项目(09C26213203808)
国家火炬计划资助项目(2010GH030468)
