Abstract:Amorphous Ti 60 Zr 15 Ni 15 Cu 10 alloy ribbons containing an icosahedral quasicrystalline phase were prepared by melt-spinning. The microstructure of this alloy strongly depends on cooling rate, which controlled by the circumferential velocity of copper roll. At a low velocity of 10 m/s, stable α-Ti/Zr, Ti 2 Ni and Ti 2 Cu crystalline phases are formed. At the velocities of 15 and 20 m/s, an icosahedral quasicrystal phase (I-phase) is formed directly. At the velocities of 25, 30 and 35 m/s, a mixed structure … Show more
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