Characteristics of thermal transitions during annealing of a nanocrystalline Ni3Al-based alloy
作者： Masoud Nazarian-Samani , Ali Reza Kamali
DOI: 10.1016/J.JALLCOM.2009.06.130
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摘要: Abstract In this study, the changes in atomic ordering of a Ni 3 Al-based alloy were investigated. The mechanically alloyed powders annealed at different temperatures up to 1300 °C and then subjected X-ray diffraction (XRD) analysis. addition, differential thermal analysis (DTA) with heating rates was used for calculating activation energy (using Kissinger Augis & Bennet methods) enthalpy three transitions: crystalline structure, transformation γ ′ -L 1 2 → -fcc melting. According results obtained, maximum obtained 600 °C, beyond which it decreased increasing temperature. Ultimately, completely vanished due lattice occurring from L1 ordered structure Ni-based solid solution phase.
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