Experimental Study of Cu-Al-Ni-Fe-Mn Aluminum Bronze Strengthen by Ce

Abstract

Cu-Ce intermediate alloy was added to aluminum bronze alloy which contains Al, Ni, Fe and Mn to form a novel aluminum-bronze material of Cu-Al-Ni-Fe-Mn. The influence of the different concentrations of rare earth cerium on the mechanical properties, wear resistance and microstructures of as cast Cu-Al-Ni-Fe alloy has been investigated. The results indicate that the addition of an appropriate Ce content can effectively refine the microstructure and improve the tensile strength, ductility and wear resistance. When the alloy is added by 0.15% Ce, the grain is small, sleek and uniform distribution, the tensile strength, ductility and wear resistance of the alloy material can reach to the best performance, in which tensile strength is 731Mpa and elongation is 34%. However, when the rare earth cerium add to more than 0.20%, the block shape and shred of organization becomes large, which leads to the grain boundary roughening. The tensile strength, ductility and wear resistance are declining.