Sliding wear and friction behavior of ZA-27 alloy reinforced by Mn-containing intermetallic compounds
来源期刊：中国有色金属学报(英文版)2002年第4期
论文作者：龙雁 李元元 张大童 邱诚 陈维平
文章页码：775 - 779
Key words：ZA-27 alloy; intermetallic compounds; sliding wear; friction
Abstract: A ZA-27 alloy reinforced with Mn-containing intermetallic compounds was prepared and its tribological behaviors were investigated. By adding Mn, RE, Ti and B into ZA-27 alloy, the test alloy (ZMJ) was fabricated by sand casting. Microstructural analysis shows that considerable amount of Mn-con taining intermetallic compounds such as Al5MnZn, Al9(MnZn)2 and Al65Mn(RE)6Ti4Zn36 are formed. Compared to ZA-27, ZMJ shows better wear resistance, lower friction coefficient and lower temperature rise of worn surface under lubricated sliding condition. ZMJ also shows the lowest steady friction coefficient under dry friction condition. The wear resistance improvement of ZMJ is mainly attributed to the high hardness and good dispersion of these Mn-containing intermetallic compounds. It is indicated that the intermetallic compounds play a dominant role in reducing the sever adhesive and abrasive wear of the ZA-27 alloy.
