Towards the distribution of a class of polycrystalline materials with an equilibrium defect structure by grain diameters: Temperature behavior of the yield strength; AIP Conference Proceedings; Vol. 2899, iss. 1 : Physical Mesomechanics of Condensed Matter: Physical Principles of Multiscale Structure Formation and the Mechanisms of Nonlinear Behavior (MESO 2022)
| Parent link: | AIP Conference Proceedings.— : AIP Publishing Vol. 2899, iss. 1 : Physical Mesomechanics of Condensed Matter: Physical Principles of Multiscale Structure Formation and the Mechanisms of Nonlinear Behavior (MESO 2022).— 2023.— Article number 020122, 8 p. |
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| Summary: | Title screen We modify a theory of flow stress introduced in [6,7,8] for a class of polycrystalline materials with equilibrium and quasy-equilibrium defect structure under quasi-static plastic deformations. We suggest Maxwell-like distribution law for defects (within dislocation-disclination mechanism) in the grains of polycrystalline samples with respect to grain’s diameter. Polycrystalline aggregates are considered within single-and two-phase models that correspond by the presence of crystalline and grain-boundary (porous) phases. The scalar dislocation density is derived. Analytic and graphic forms of the generalized Hall–Petch relations for yield strength are produced for single-mode samples with BCC (a-Fe), FCC (Cu, Al, Ni) and HCP (a-Ti, Zr) crystal lattices at T=300 K with different values of the grain-boundary phase. We derived new form of the temperature-dimensional effect. The values of extremal grain and maximum of yield strength are decreased with raising the temperature in accordance with experiments up to UFG region Текстовый файл AM_Agreement |
| Sprog: | engelsk |
| Udgivet: |
2023
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| Fag: | |
| Online adgang: | https://doi.org/10.1063/5.0162982 |
| Format: | MixedMaterials Electronisk Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=672531 |
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| 200 | 1 | |a Towards the distribution of a class of polycrystalline materials with an equilibrium defect structure by grain diameters: Temperature behavior of the yield strength |f A. A. Reshetnyak, V. V. Shamshutdinova | |
| 203 | |a Текст |c электронный |b визуальный | ||
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| 300 | |a Title screen | ||
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| 330 | |a We modify a theory of flow stress introduced in [6,7,8] for a class of polycrystalline materials with equilibrium and quasy-equilibrium defect structure under quasi-static plastic deformations. We suggest Maxwell-like distribution law for defects (within dislocation-disclination mechanism) in the grains of polycrystalline samples with respect to grain’s diameter. Polycrystalline aggregates are considered within single-and two-phase models that correspond by the presence of crystalline and grain-boundary (porous) phases. The scalar dislocation density is derived. Analytic and graphic forms of the generalized Hall–Petch relations for yield strength are produced for single-mode samples with BCC (a-Fe), FCC (Cu, Al, Ni) and HCP (a-Ti, Zr) crystal lattices at T=300 K with different values of the grain-boundary phase. We derived new form of the temperature-dimensional effect. The values of extremal grain and maximum of yield strength are decreased with raising the temperature in accordance with experiments up to UFG region | ||
| 336 | |a Текстовый файл | ||
| 371 | 0 | |a AM_Agreement | |
| 461 | 1 | |0 640270 |9 640270 |t AIP Conference Proceedings |n AIP Publishing | |
| 463 | 1 | |t Vol. 2899, iss. 1 : Physical Mesomechanics of Condensed Matter: Physical Principles of Multiscale Structure Formation and the Mechanisms of Nonlinear Behavior (MESO 2022) |o International Conference, 5-8 September 2022 Tomsk, Russia |v Article number 020122, 8 p. |d 2023 | |
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| 610 | 1 | |a metallurgy | |
| 610 | 1 | |a polycrystalline material | |
| 700 | 1 | |a Reshetnyak |b А. А. |c physicist |c Associate Professor of Tomsk Polytechnic University, Candidate of Physical and Mathematical Sciences |f 1970- |g Aleksandr Aleksandrovich |9 88518 | |
| 701 | 1 | |a Shamshutdinova |b V. V. |c physicist |c Associate Professor of Tomsk Polytechnic University, candidate of physical and mathematical sciences |f 1982- |g Varvara Vladimirovna |9 20209 | |
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