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Formation of nano icosahedral quasicrystalline phase in Zr-Ni-M (M=Pd, Au, Pt) ternary glassy alloys

Abstract A nano icosahedral quasicrystalline phase was confirmed as a primary precipitation phase in the melt-spun Zr70Ni10M20 (M=Pd, Au and Pt) ternary glassy alloys. It is clarified that the precipitation of the icosahedral phase takes place by a diffusion-controlled growth mode with increasing nucleation rate. The formation of the nano scale icosahedral phase also indicates the existence of short-range order correlated with an icosahedral structure in the glassy state.