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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Бібліографічні деталі
Дата:2008
Автори: Badiyan, E.E., Tonkopryad, A.G., Shekhovtsov, O.V., Shurinov, R.V.
Формат: Стаття
Мова:English
Опубліковано: НТК «Інститут монокристалів» НАН України 2008
Назва видання:Functional Materials
Теми:
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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Digital Library of Periodicals of National Academy of Sciences of Ukraine
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spelling 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
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