• Effect of processing on microstructure and wear characteristics of an Al-4·5Cu-10Pb alloy

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    • Keywords

       

      Spray forming; impeller mixing; solidification; microstructure; particle dispersion; wear

    • Abstract

       

      An Al-4·5Cu-10Pb alloy was processed by spray forming as well as impeller mixing followed by chill casting methods. The microstructure, mechanical properties and dry sliding wear characteristics of the alloy were evaluated. The spray formed alloy showed an equiaxed grain morphology with a uniform dispersion of lead particles in the matrix phase. In contrast a cellular-dendritic morphology of the primary phase was the characteristic feature of the alloy processed by impeller mixing and chill casting method. The spray formed alloy indicated its superior mechanical properties and low wear rate particularly at higher applied load and sliding velocity. The possible reason for this behaviour is discussed in the light of microstructure of the alloy and the nature of the worn out surfaces of the wear test specimens.

    • Author Affiliations

       

      J P Pathak1 S N Ojha1

      1. Centre for Advanced Study, Department of Metallurgical Engineering, Banaras Hindu University, Varanasi - 221 005, India
    • Dates

       
  • Bulletin of Materials Science | News

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