Formation of micro-discontinuities during thermal processing and plastic deformation of polycrystalline materials
Influence of initial micro-defective structure and microdefects arising during thermal and mechanical treatment on mechanical characteristics of polycrystalline aluminum samples has been studied experimentally. It is shown that heat treatment of samples with strongly distorted structure results in a...
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Дата: | 2008 |
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Формат: | Стаття |
Мова: | English |
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НТК «Інститут монокристалів» НАН України
2008
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Назва видання: | Functional Materials |
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Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/134559 |
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Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
Цитувати: | Formation of micro-discontinuities during thermal processing and plastic deformation of polycrystalline materials / E.E. Badiya, A.G.Tonkopryad, O.V. Shekhovtso, R.V. Shurinov // Functional Materials. — 2008. — Т. 15, № 2. — С. 198-202. — Бібліогр.: 10 назв. — англ. |
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irk-123456789-1345592018-06-14T03:06:21Z Formation of micro-discontinuities during thermal processing and plastic deformation of polycrystalline materials Badiyan, E.E. Tonkopryad, A.G. Shekhovtsov, O.V. Shurinov, R.V. Characterization and properties Influence of initial micro-defective structure and microdefects arising during thermal and mechanical treatment on mechanical characteristics of polycrystalline aluminum samples has been studied experimentally. It is shown that heat treatment of samples with strongly distorted structure results in a decreased sample density due to generation of porous structure. Formation of pores on grain boundaries hinders recrystallization and results in appearance of microcracks near the pores at plastic straining that causes the grain-boundary failure character of fine-grained samples. It is shown that pre-straining promotes decrease in porosity during high-temperature annealing that, in turn, causes coarsening of grains. Експериментально досліджено вплив вихідної мікродефектної структури та мікродефектів, що виникають у процесі термічної та механічної обробки, на механічні характеристики полікристалічних зразків алюмінію. Показано, що термічна обробка зразків із сильно викривленою структурою приводить до зменшення їхньої густини внаслідок утворення пористої структури. Утворення пор на межах зерен перешкоджає рекристалізації та приводить до виникнення при пластичному деформуванні в області пор мікротріщин, що обумовлює зерномежевий характер руйнування дрібнозернистих зразків. Показано, що попередня деформація сприяє зменшенню пористості у ході високотемпературного відпалу, що, в свою чергу, приводить до укрупнення зерен. Экспериментально исследовано влияние исходной микродефектной структуры и микродефектов, возникающих в процессе термической и механической обработки, на механические характеристики поликристаллических образцов алюминия. Показано, что термическая обработка образцов с сильно искаженной структурой приводит к уменьшению их плотности вследствие образования пористой структуры. Образование пор на границах препятствует рекристаллизации и приводит к возникновению при пластическом деформировании в области пор микротрещин, что обусловливает зернограничный характер разрушения мелкозернистых образцов. Показано, что предварительная деформация способствует уменьшению пористости в процессе высокотемпературного отжига, что, в свою очередь, приводит к укрупнению зерен. 2008 Article Formation of micro-discontinuities during thermal processing and plastic deformation of polycrystalline materials / E.E. Badiya, A.G.Tonkopryad, O.V. Shekhovtso, R.V. Shurinov // Functional Materials. — 2008. — Т. 15, № 2. — С. 198-202. — Бібліогр.: 10 назв. — англ. 1027-5495 http://dspace.nbuv.gov.ua/handle/123456789/134559 en Functional Materials НТК «Інститут монокристалів» НАН України |
institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
collection |
DSpace DC |
language |
English |
topic |
Characterization and properties Characterization and properties |
spellingShingle |
Characterization and properties Characterization and properties Badiyan, E.E. Tonkopryad, A.G. Shekhovtsov, O.V. Shurinov, R.V. Formation of micro-discontinuities during thermal processing and plastic deformation of polycrystalline materials Functional Materials |
description |
Influence of initial micro-defective structure and microdefects arising during thermal and mechanical treatment on mechanical characteristics of polycrystalline aluminum samples has been studied experimentally. It is shown that heat treatment of samples with strongly distorted structure results in a decreased sample density due to generation of porous structure. Formation of pores on grain boundaries hinders recrystallization and results in appearance of microcracks near the pores at plastic straining that causes the grain-boundary failure character of fine-grained samples. It is shown that pre-straining promotes decrease in porosity during high-temperature annealing that, in turn, causes coarsening of grains. |
format |
Article |
author |
Badiyan, E.E. Tonkopryad, A.G. Shekhovtsov, O.V. Shurinov, R.V. |
author_facet |
Badiyan, E.E. Tonkopryad, A.G. Shekhovtsov, O.V. Shurinov, R.V. |
author_sort |
Badiyan, E.E. |
title |
Formation of micro-discontinuities during thermal processing and plastic deformation of polycrystalline materials |
title_short |
Formation of micro-discontinuities during thermal processing and plastic deformation of polycrystalline materials |
title_full |
Formation of micro-discontinuities during thermal processing and plastic deformation of polycrystalline materials |
title_fullStr |
Formation of micro-discontinuities during thermal processing and plastic deformation of polycrystalline materials |
title_full_unstemmed |
Formation of micro-discontinuities during thermal processing and plastic deformation of polycrystalline materials |
title_sort |
formation of micro-discontinuities during thermal processing and plastic deformation of polycrystalline materials |
publisher |
НТК «Інститут монокристалів» НАН України |
publishDate |
2008 |
topic_facet |
Characterization and properties |
url |
http://dspace.nbuv.gov.ua/handle/123456789/134559 |
citation_txt |
Formation of micro-discontinuities during thermal processing and plastic deformation of polycrystalline materials / E.E. Badiya, A.G.Tonkopryad, O.V. Shekhovtso, R.V. Shurinov // Functional Materials. — 2008. — Т. 15, № 2. — С. 198-202. — Бібліогр.: 10 назв. — англ. |
series |
Functional Materials |
work_keys_str_mv |
AT badiyanee formationofmicrodiscontinuitiesduringthermalprocessingandplasticdeformationofpolycrystallinematerials AT tonkopryadag formationofmicrodiscontinuitiesduringthermalprocessingandplasticdeformationofpolycrystallinematerials AT shekhovtsovov formationofmicrodiscontinuitiesduringthermalprocessingandplasticdeformationofpolycrystallinematerials AT shurinovrv formationofmicrodiscontinuitiesduringthermalprocessingandplasticdeformationofpolycrystallinematerials |
first_indexed |
2025-07-09T21:40:35Z |
last_indexed |
2025-07-09T21:40:35Z |
_version_ |
1837207114158702592 |
fulltext |
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