 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 12854 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8044
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| In English (Mech. Solids): | | 4810 |
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| A.V. Redkov, S.A. Kukushkin, and A.V. Osipov, "Vacancy Growth of a Faceted Pore in a Crystal via Chernov Mechanism," Mech. Solids. 55 (1), 77-83 (2020) |
| Year |
2020 |
Volume |
55 |
Number |
1 |
Pages |
77-83 |
| DOI |
10.3103/S0025654420010136 |
| Title |
Vacancy Growth of a Faceted Pore in a Crystal via Chernov Mechanism |
| Author(s) |
A.V. Redkov (Institute for Problems in Mechanical Engineering, Russian Academy of Sciences, St. Petersburg, 199078 Russia, avredkov@gmail.com)
S.A. Kukushkin (Institute for Problems in Mechanical Engineering, Russian Academy of Sciences, St. Petersburg, 199078 Russia)
A.V. Osipov (ITMO University, St. Petersburg, 197101 Russia) |
| Abstract |
The vacancy growth of a faceted pore in a crystal via Chernov mechanism is studied. It is assumed that the growth is due to the diffusion of excess vacancies arising in the bulk of the crystal under the influence of mechanical tensile stress. In the framework of the formalism proposed by Chernov, the distribution of vacancies in the crystal near the step and its rate of advance are found. A connection is established between the normal pore growth rate and the applied mechanical stress. The growth due to the advance of a set of equidistant "void" steps as well as due to advance of the spiral step that arose at the exit point of the screw dislocation are considered. The results can be used to analyze the durability of materials subjected constantly to low tensile stresss. |
| Keywords |
pore, growth, vacancy, crystal, fracture, Chernov mechanism |
| Received |
14 August 2019 | Revised |
26 August 2019 | Accepted |
18 September 2019 |
| Link to Fulltext |
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