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Інформація × Реєстраційний номер 2112U001574, Матеріали видань та локальних репозитаріїв Категорія Thesis Назва роботи Structural Evolution and Phase Transformation in Nanoquasicrystalline Al-Fe-Cr Alloy: DSC Analysis Автор Дата публікації 01-01-2012 Постачальник інформації Сумський державний університет Першоджерело http://essuir.sumdu.edu.ua/handle/123456789/34854 Видання Sumy State University Опис Kinetic parameters for microstructural evolution and phase transformation in water atomized Al-Fe-Cr based alloy with nominal composition Al94Fe3Cr3 have been examined by means of developed precise method of DSC technique and confirmed by the results of XRD analysis. Two exothermic reactions including that with a maximum at 380 – 400 degrees Celsius has been ascribed to dislocation reorganisation and recrystallisation process within the Al matrix although the main exothermic reaction with a maximum around 540 degrees Celsius arose from decomposition of icosahedral quasicrystalline particles and simultaneous formation of the metastable Al6Fe phase and more stable crystalline particles compositionally corresponded to the O-Al13Cr2 and O-Al13Fe4 phases. Activation energy for the main exothermic reaction has been found to be roughly about 53.1 kJ mol-1 which is significantly smaller than that for the bulk diffusion of either iron or chromium atoms in aluminium and very close to that for the vacancy migration. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/34854 Додано в НРАТ 2025-05-12 Закрити