Modelling of Physical Kinetics of Relaxation in Macroscopically Homogeneous F.C.C.-Ni—Fe Alloys

• Дата: 2012
• Автори: Vernyhora, I.V., Bokoch, S.M., Tatarenko, V.A.
• Формат: Стаття
• Мова: English
• Опубліковано: Інститут металофізики ім. Г.В. Курдюмова НАН України 2012
• Назва видання: Наносистеми, наноматеріали, нанотехнології
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/75893
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Modelling of Physical Kinetics of Relaxation in Macroscopically Homogeneous F.C.C.-Ni—Fe Alloys / I.V. Vernyhora, S.M. Bokoch, V.A. Tatarenko // Наносистеми, наноматеріали, нанотехнології: Зб. наук. пр. — К.: РВВ ІМФ, 2012. — Т. 10, № 4. — С. 897-916. — Бібліогр.: 37 назв. — анг.

In comparison with classical Lifshitz—Slyozov—Wagner’s theory and, where it is possible, with available experimental data, the physical kinetics of evolution of a microstructure of f.c.c.-Nі—Fe alloys is simulated by means of the Onsager-type equations of microdiffusion and with the account of the effects caused by magnetic interatomic interactions and elastic interactions of inclusions of phases. Magnetism proper in f.c.c.-Nі—Fe alloys essentially influences a tendency to atomic ordering and development of their microstructure; magnetic interactions promote stabilisation of a precipitated phase and dilate an interval of two-phase coexistence. In Elinvar alloys, elastic interactions essentially change morphology of an intermixture of formed phases of the superstructural L10 and L12 types (or of structural A1 type), giving the anisotropic character to the shape of inclusions of phases as well as to their relative spatial arrangement. Meanwhile, for an intermixture of phases of structural A1 type and superstructural L12 type in Permalloys, the anisotropic effects of such interactions are inappreciable.