Mechanisms of Cold Deformation under High Pressure of Superconductive MgB2 Ceramics
- Авторы: Kuznetsova E.1, Krinitsina T.1, Sudareva S.1, Blinova Y.1, Degtyarev M.1, Akshentsev Y.1
-
Учреждения:
- Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
- Выпуск: Том 119, № 8 (2018)
- Страницы: 802-809
- Раздел: Strength and Plasticity
- URL: https://journals.rcsi.science/0031-918X/article/view/167768
- DOI: https://doi.org/10.1134/S0031918X18080070
- ID: 167768
Цитировать
Аннотация
Structures of the massive MgB2 samples deformed in Bridgman anvils that were initially in different structural states, namely, as-synthesized and post-four-stage-treated (via deformation + annealing), have been studied by methods of the X-ray diffraction, scanning and transmission electron microscopy, and measurements of microhardness. The process of the deformation of brittle ceramic samples of MgB2 under high pressure has been discussed. An analysis of the obtained data has shown that the plastic deformation of the superconductor MgB2 preliminarily compacted by a four-stage treatment has been implemented in the main through the mutual rotation of crystallites (grains) and by grain-boundary sliding without a noticeable refinement of the grain structure.
Ключевые слова
Об авторах
E. Kuznetsova
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Автор, ответственный за переписку.
Email: monocrist@imp.uran.ru
Россия, Ekaterinburg, 620108
T. Krinitsina
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Email: monocrist@imp.uran.ru
Россия, Ekaterinburg, 620108
S. Sudareva
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Email: monocrist@imp.uran.ru
Россия, Ekaterinburg, 620108
Yu. Blinova
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Email: monocrist@imp.uran.ru
Россия, Ekaterinburg, 620108
M. Degtyarev
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Email: monocrist@imp.uran.ru
Россия, Ekaterinburg, 620108
Yu. Akshentsev
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Email: monocrist@imp.uran.ru
Россия, Ekaterinburg, 620108