Thermal evolution of nanocrystalline intermetallic materials by DSC measurements

S. Surinach, J. Malagelada, M. D. Baro

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Abstract

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.
Original languageEnglish
Pages (from-to)463-468
JournalMaterials Science Forum
Volume179-181
Publication statusPublished - 1 Jan 1995

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