The Thermal Stability and Variation of Precipitated Phase in Amorphous Zr70Cu30 Alloy at High Pressure

The thermal stability and the variation of constituent crystallised phase in annealing a morphous Zr70Cu30 alloy under a pressure of 2 GPa were examined by resistance measurement and X-ray diffration analysis results show an increment of crystallizing temperature at high pressure. An evident variation on phase equilibrium was observed. Instead of the precipitation of CuZr2 compound (with a little amount of -Zr) at normal pressure, a mixture of Cu10Zr7 compound and -Zr occurs under 2 GPa.