Emission Mössbauer spectroscopy of grain boundaries in ultrafine-grained W and Mo produced by severe plastic deformation
- Авторы: Popov V.1, Sergeev A.1, Stolbovsky A.1
-
Учреждения:
- Mikheev Institute of Metal Physics, Ural Branch
- Выпуск: Том 118, № 4 (2017)
- Страницы: 354-361
- Раздел: Structure, Phase Transformations, and Diffusion
- URL: https://journals.rcsi.science/0031-918X/article/view/167008
- DOI: https://doi.org/10.1134/S0031918X17040081
- ID: 167008
Цитировать
Аннотация
Grain boundaries in ultrafine-grained W and Mo produced by severe plastic deformation (SPD) by high-pressure torsion method have been studied by emission Mössbauer spectroscopy on 57Co (57Fe) nuclei. The evolution of the state of the grain boundaries has been studied upon heating. It has been shown that, after SPD, the grain boundaries are in a nonequilibrium state, which is characterized by an excess free volume. Upon annealing, the state of the grain boundaries changes as it approaches the state typical of coarse-grained materials.
Ключевые слова
Об авторах
V. Popov
Mikheev Institute of Metal Physics, Ural Branch
Автор, ответственный за переписку.
Email: vpopov@imp.uran.ru
Россия, ul. S. Kovalevskoi 18, Ekaterinburg, 620990
A. Sergeev
Mikheev Institute of Metal Physics, Ural Branch
Email: vpopov@imp.uran.ru
Россия, ul. S. Kovalevskoi 18, Ekaterinburg, 620990
A. Stolbovsky
Mikheev Institute of Metal Physics, Ural Branch
Email: vpopov@imp.uran.ru
Россия, ul. S. Kovalevskoi 18, Ekaterinburg, 620990