Abstract
The phase composition and the magnetic characteristics of 20 as-cast of Cu–Mn–Bi alloy samples have been studied experimentally. The samples have been studied using scanning electron microscopy, electron-probe microanalysis, atomic emission with inductive-coupled plasma, and X-ray diffraction analysis. The magnetic characteristics of the alloys are studied by a vibration method at room temperature. The samples contain the α-MnBi and Mn3Cu4Bi4 intermetallic compounds along with a copper-based solid solution and bismuth precipitates. The α-Mn phase can precipitate at high manganese contents in the sample compositions. The magnetic characteristics of the alloys are dependent on the volume proportion of the phases. A high of intermetallic compound content leads to an increase in the magnetic susceptibility of the samples up to the manifestation of their ferromagnetic properties. In addition, Vickers microhardness HV0.1 is measured.
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