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Pisma v Zhurnal Tekhnicheskoi Fiziki, 2021, Volume 47, Issue 18, Pages 40–42
DOI: https://doi.org/10.21883/PJTF.2021.18.51472.18872 (Mi pjtf4683) 		 
A model of pore dissolution at grain boundaries during annealing of an ultra-fine-grained aluminum alloy

M. Yu. Gutkina, T. S. Orlovab, N. V. Skibaac

a Institute of Problems of Mechanical Engineering, Russian Academy of Sciences, St. Petersburg
b Ioffe Institute, St. Petersburg
c Peter the Great St. Petersburg Polytechnic University
Full-text PDF (94 kB)
DOI: https://doi.org/10.21883/PJTF.2021.18.51472.18872
Abstract: A theoretical model which describes the mechanism of pore dissolution at grain boundaries in ultrafine-grained materials during the ageing annealing is suggested. Within the framework of the model, pore dissolution occurs due to the emission of vacancies and the climb of grain-boundary dislocations along the grain boundary towards the pore. It is shown that in this case there is a significant decrease in the total energy of the system. The results of the model are in good agreement with the available experimental observations of pore dissolution during annealing of ultrafine-grained Al–Zr alloy.
Keywords: ultrafine-grained materials, pores, grain boundary disclinations, grain boundary dislocations.
Funding agency Grant number
Russian Foundation for Basic Research 19-08-00474
Ministry of Education and Science of the Russian Federation 0784-2020-0027
This work was supported in part by the Russian Foundation for Basic Research (grant no. 19-08-00474) and (for N.V. Skiba) by the Ministry of Science and Higher Education of the Russian Federation (assignment no. 0784-2020-0027).
Received: 14.05.2021
Revised: 07.06.2021
Accepted: 09.06.2021
English version:
Technical Physics Letters, 2022, Volume 48, Issue 1, Pages 8–11
DOI: https://doi.org/10.1134/S1063785022010047
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: M. Yu. Gutkin, T. S. Orlova, N. V. Skiba, “A model of pore dissolution at grain boundaries during annealing of an ultra-fine-grained aluminum alloy”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 47:18 (2021), 40–42; Tech. Phys. Lett., 48:1 (2022), 8–11
Citation in format AMSBIB
\Bibitem{GutOrlSki21}
\by M.~Yu.~Gutkin, T.~S.~Orlova, N.~V.~Skiba
\paper A model of pore dissolution at grain boundaries during annealing of an ultra-fine-grained aluminum alloy
\jour Pisma v Zhurnal Tekhnicheskoi Fiziki
\yr 2021
\vol 47
\issue 18
\pages 40--42
\mathnet{http://mi.mathnet.ru/pjtf4683}
\crossref{https://doi.org/10.21883/PJTF.2021.18.51472.18872}
\elib{https://elibrary.ru/item.asp?id=46321958}
\transl
\jour Tech. Phys. Lett.
\yr 2022
\vol 48
\issue 1
\pages 8--11
\crossref{https://doi.org/10.1134/S1063785022010047}
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