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Every’s and Blackman’s Diagrams, Cauchy Pressure, and Analysis of Elastic Properties of Crystalline Lattice of Ti49Ni51 (at %) and TiNi–TiFe Alloys with and without Martensitic Transformationsстатья
Дата последнего поиска статьи во внешних источниках: 25 января 2024 г.
- Авторы: Muslov S.A., Lotkov A.I., Sukhochev P.Yu
- Журнал: Inorganic Materials: Applied Research
- Том: 14
- Номер: 2
- Год издания: 2023
- Первая страница: 249
- Последняя страница: 253
- DOI: 10.1134/s2075113323020326
- Аннотация: Analysis of elastic properties of Ti49 Ni51 (at %) and TiNi–TiFe single crystals, where the B2 phasecan be both stable and unstable with respect to martensitic transformations, has been performed using theEvery’s and Blackman’s diagrams, which are well known as two characterization methods of elastic propertiesof cubic crystals. Pair correlation relationships between (s2, s3), (s3 , s1), and (F44 , F12 ) have been calculated.The evolution of Cauchy pressure pC has been analyzed as a function of content of iron atoms in the crystal-line lattice of the B2 phase of the alloys. It has been established that, irrespective of composition of the alloys,the Cauchy pressure is higher than zero and nearly monotonically decreases from 100.5 to 35.0 GPa withincrease in content of Fe atoms in the crystalline lattice of the TiNi–TiFe B2 phase and increase in its stabilitywith respect to martensitic transformations (up to complete stabilization). Such evolution of pC correspondsto the data, according to which significant constituent of bond forces in TiNi is a metallic bond, and withincrease in concentration of Fe atoms in the alloys instead of Ni atoms and approaching the composition ofTiFe, the fraction of the covalent constituent of bond forces increases.
- Добавил в систему: Сухочев Павел Юрьевич