Multilevel Model for Description of Material Deformation under Structural Superplasticity Conditions: Modified Kinetic Equations; AIP Conference Proceedings; Vol. 2051 : Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2018 (AMHS’18)

Multilevel Model for Description of Material Deformation under Structural Superplasticity Conditions: Modified Kinetic Equations; AIP Conference Proceedings; Vol. 2051 : Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2018 (AMHS’18)

Библиографические подробности
Источник:AIP Conference Proceedings
Vol. 2051 : Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2018 (AMHS’18).— 2018.— [020277, 4 p.]
Главный автор: Sharifullina E. R.
Автор-организация: Национальный исследовательский Томский политехнический университет (ТПУ)
Другие авторы: Shveykin A. I., Trusov P. V.
Примечания:Title screen
It is proposed a mathematical model, describing the behavior of polycrystalline metals and alloys during deformation with transition to structural superplasticity regime. The model is constructed within the multilevel approach, based on crystal plasticity, which allows to describe explicitly changes in material structure and physical deformation mechanisms at different scale levels by introducing internal variables and their evolution equations into structure of mathematical model. Use of this approach is also promising in modeling of various deformation regimes and transitions between them. Model includes the description of main inelastic deformation mechanisms-grain boundary sliding, intragranular dislocation sliding, as well as accompanying processes-grain boundary diffusion, crystallite lattice rotations, dynamic recrystallization. The article is focused on description and physical substantiation of hardening law for grain boundary sliding, taking into account the mutual influence of basic mechanisms, and also on changing their role during inelastic deformation. The results of numerical calculations for deformation of aluminum alloy under conditions of structural superplasticity are presented: staging of stresses versus strains, observed in experiments, is shown; the role of main mechanisms and processes has been determined and analyzed at each stage.
Режим доступа: по договору с организацией-держателем ресурса
Язык:английский
Опубликовано: 2018
Предметы:
электронный ресурс
труды учёных ТПУ
многоуровневые модели
деформации
материалы
сверхпластичность
кинетические уравнения
математические модели
металлы
сплавы
неупругие деформации
границы зерен
алюминиевые сплавы
Online-ссылка:https://doi.org/10.1063/1.5083520
Формат: Электронный ресурс Статья
Запись в KOHA:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=659238

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