Calorimetric and structural analysis of the new phase Al33Ni16Zr51 produced by direct synthesis and mechanical alloying

A new phase has been synthesized in the ternary phase diagram Al-Ni-Zr: its nominal composition is Al33Ni16Zr51. For the Al33Ni16Zr51 compound obtaine d by mixing the three components in suitable proportions, a study has been carried out by direct synthesis (calorimetry) and mechanical alloying in ou r laboratory. With the first method we know directly the enthalpy of format ion of this alloy. For the amorphous alloys prepared by mechanical alloying we can determine the crystallisation enthalpy with the differential scanni ng calorimetry (DSC) method. So it is possible to determine a fundamental p iece of information: the amorphous alloy formation enthalpy. (C) 1999 Elsev ier Science S.A. All rights reserved.