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The microstructure and wear resistance of Al-Bi-Ce-Cu immiscible alloys
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Key Laboratory of Electromagnetic Processing of Materials Ministry of Education,Northeastern University

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TG132.3

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    Abstract:

    Immiscible alloys have been investigated as a kind of alloys with special metallurgy characteristics. Liquid phase separation of Al-Bi immiscible alloys has been investigated for decades. In this work, the microstructure and the wear resistance of Al-Bi-Ce-Cu alloys were investigated. The intermetallic compounds Bi2Ce form and act as heterogeneous nucleation sites of Bi-rich droplets, which promote the nucleation of Bi phase and obtain a dispersed microstructure. The intermetallic compound Al2Cu locate in the Al-rich matrix and enhance the hardness of matrix. The wear resistance of alloys is not only dependent on the size of Bi-rich droplets but also dependent on the hardness of matrix. The refined microstructure and the strengthened hardness improve the wear resistance of Al-Bi alloys. Therefore, Al-Bi-Ce-Cu immiscible alloys is useful as a wear resistance material.

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[Man Tiannan, Zhang Lin, Xiang Zhaolong, Wang Wenbin, Huang Minghao, Wang Engang. The microstructure and wear resistance of Al-Bi-Ce-Cu immiscible alloys[J]. Rare Metal Materials and Engineering,2018,47(12):3716~3720.]
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History
  • Received:March 29,2017
  • Revised:June 13,2017
  • Adopted:June 23,2017
  • Online: January 04,2019
  • Published: