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Mechanical properties, strength physics and plasticity
Model of formation of discrete dislocations of the thermoelastic martensitic transformation
G. A. Malygin Ioffe Institute, St. Petersburg, Russia
Abstract:
The problem of the transition of a pre-martensite nanostructure of a SME crystal to a structure of discrete dislocation loops of the martensitic transformation is considered in the framework of the Ginzburg–Landau (GL) theory of nonequilibrium first-order phase transitions and a number of reasonable assumptions for the first time. Two asymptotic solutions of the GL equation have been obtained: one solution for a homogeneous source of crystal nanomodulation and another, for a spatially periodic pre-martensite nanostructure. An analysis of these solutions shows that the consolidation of local elastic lines of the nanostructure can be a cause of the formation of discrete dislocation loops of the martensitic transformation.
Keywords:
SME alloys, pre-martensite nanostructure, nonequilbrium phase transition, discrete dislocations of martensitic transformation.
Received: 12.10.2020 Revised: 12.10.2020 Accepted: 19.10.2020
Citation:
G. A. Malygin, “Model of formation of discrete dislocations of the thermoelastic martensitic transformation”, Fizika Tverdogo Tela, 63:2 (2021), 272–276; Phys. Solid State, 63:2 (2021), 308–312
Linking options:
https://www.mathnet.ru/eng/ftt8187 https://www.mathnet.ru/eng/ftt/v63/i2/p272
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Statistics & downloads: |
Abstract page: | 47 | Full-text PDF : | 17 |
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