The mierostructure of an AuNiFeCrlnZr alloy has been studied by means of TEM,CBED. SEM and EDS. The results show that the alloy contains Au-rich solid solution, Ni-rich solid solution, and η- and -ωphases. The η-phase containing 90at%Cr possesses an orlhorhombic .structure with a = 0.448nm. b = 1.40nm and c = 1.21nm, and space group of Pmm2 or Pmmm. The ω-phase is an fee structure with a = 0.682nin and space group of Fm3m. The ω-phase dispersed in the alloy matrix plays an important role in increasing strength and wear resistance of the alloy.
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