Sliding wear and friction behavior of ZA-27 alloy reinforced by Mn-containing intermetallic compound

来源 :Transactions of Nonferrous Metals Society of China | 被引量 : 0次 | 上传用户:watta515
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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 containing intermetallic compounds such as Al 5MnZn, Al 9(MnZn) 2 and Al 65 Mn(RE) 6Ti 4Zn 36 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. 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 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. It is indicated that the intermetallic compounds play a dominant role in reducing the sever adhesive and abrasive wear of the ZA 27 alloy.
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