In this paper, the thermal evolution of nanocrystalline intermetallic alloys prepared by ball-milling is reported. A broad exothermic transformation occurs on heating the nanocrystalline intermetallic samples. The stored energy of cold work has been evaluated by measuring the enthalpy release during heating. The values obtained far exceed the energies achieved by conventional deformation processes. The apparent activation energy for the broad exothermic peak was determined by the Kissinger method and corresponds to typical values for vacancy migration. The possible mechanisms involved in the exothermic process are discussed.
|Journal||Materials Science Forum|
|Publication status||Published - 1 Jan 1995|