Низкотемпературное деформационное старение в сплавах In-Pb в условиях релаксации напряжений

В режиме релаксации напряжений изучено динамическое деформационное старение (ДДС) в монокристаллах твердых растворов замещения In-Pb с 6 и 8 ат. % Pb при температурах 77-205 К. Получены зависимости величины послерелаксационного упрочнения, обусловленного ДДС, от длительности релаксации напряжений, с...

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Published in:Физика низких температур
Date:2000
Main Author: Фоменко, Л.С.
Format: Article
Language:Russian
Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2000
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Online Access:https://nasplib.isofts.kiev.ua/handle/123456789/129245
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Journal Title:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Cite this:Низкотемпературное деформационное старение в сплавах In-Pb в условиях релаксации напряжений / Л.С. Фоменко // Физика низких температур. — 2003. — Т. 26, № 12. — С. 1245-1255. — Бібліогр.: 24 назв. — рос.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
_version_ 1860208900269146112
author Фоменко, Л.С.
author_facet Фоменко, Л.С.
citation_txt Низкотемпературное деформационное старение в сплавах In-Pb в условиях релаксации напряжений / Л.С. Фоменко // Физика низких температур. — 2003. — Т. 26, № 12. — С. 1245-1255. — Бібліогр.: 24 назв. — рос.
collection DSpace DC
container_title Физика низких температур
description В режиме релаксации напряжений изучено динамическое деформационное старение (ДДС) в монокристаллах твердых растворов замещения In-Pb с 6 и 8 ат. % Pb при температурах 77-205 К. Получены зависимости величины послерелаксационного упрочнения, обусловленного ДДС, от длительности релаксации напряжений, скорости изменения напряжения в конце релаксации, температуры, концентрации сплава, деформирующего напряжения, степени деформации. Показано, что кинетика ДДС описывается уравнением типа уравнения Харпера с показателем степени 1/3 и низким значением энергии активации процесса (0,3-0,34 эВ), что обеспечивает низкую температуру начала проявления ДДС (~ 0,17 Tm , где Tm - температура плавления) и свидетельствует о канальном характере диффузии. Предполагается, что препятствиями для движения дислокаций в изученных кристаллах являются примесные комплексы, мощность которых увеличивается в процессе ДДС в результате канальной диффузии примесных атомов вдоль дислокаций. In the stress-relaxation regime the dynamic strain aging (DSA) in single crystals of the substitutional solid solutions of substitution In–Pb with 6 and 8 at. % Pb is investigated at temperatures of 77–205 K. It is determined how the DSA-related post-relaxation hardening depends on the duration of the stress relaxation, the rate of change of the stress at the end of the relaxation, the temperature, the concentration of the alloy, the flow stress, and the degree of deformation. It is shown that the DSA kinetics is described by an equation of the Harper type with an exponent of 1/3 and a low value of the activation energy for the process (0.3–0.34 eV), which makes for a low temperature for the onset of DSA (∼0.17 Tm, where Tm is the melting temperature) and is indicative of a pipe character of the diffusion. It is assumed that the obstacles to the motion of dislocations in these crystals are impurity complexes, the strength of which increases during DSA as a result of the pipe diffusion of impurity atoms along dislocations.
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id nasplib_isofts_kiev_ua-123456789-129245
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
issn 0132-6414
language Russian
last_indexed 2025-12-07T18:13:52Z
publishDate 2000
publisher Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
record_format dspace
spelling Фоменко, Л.С.
2018-01-18T14:38:52Z
2018-01-18T14:38:52Z
2000
Низкотемпературное деформационное старение в сплавах In-Pb в условиях релаксации напряжений / Л.С. Фоменко // Физика низких температур. — 2003. — Т. 26, № 12. — С. 1245-1255. — Бібліогр.: 24 назв. — рос.
0132-6414
PACS: 62.40.+i, 83.50.By, 61.72.Yx
https://nasplib.isofts.kiev.ua/handle/123456789/129245
В режиме релаксации напряжений изучено динамическое деформационное старение (ДДС) в монокристаллах твердых растворов замещения In-Pb с 6 и 8 ат. % Pb при температурах 77-205 К. Получены зависимости величины послерелаксационного упрочнения, обусловленного ДДС, от длительности релаксации напряжений, скорости изменения напряжения в конце релаксации, температуры, концентрации сплава, деформирующего напряжения, степени деформации. Показано, что кинетика ДДС описывается уравнением типа уравнения Харпера с показателем степени 1/3 и низким значением энергии активации процесса (0,3-0,34 эВ), что обеспечивает низкую температуру начала проявления ДДС (~ 0,17 Tm , где Tm - температура плавления) и свидетельствует о канальном характере диффузии. Предполагается, что препятствиями для движения дислокаций в изученных кристаллах являются примесные комплексы, мощность которых увеличивается в процессе ДДС в результате канальной диффузии примесных атомов вдоль дислокаций.
In the stress-relaxation regime the dynamic strain aging (DSA) in single crystals of the substitutional solid solutions of substitution In–Pb with 6 and 8 at. % Pb is investigated at temperatures of 77–205 K. It is determined how the DSA-related post-relaxation hardening depends on the duration of the stress relaxation, the rate of change of the stress at the end of the relaxation, the temperature, the concentration of the alloy, the flow stress, and the degree of deformation. It is shown that the DSA kinetics is described by an equation of the Harper type with an exponent of 1/3 and a low value of the activation energy for the process (0.3–0.34 eV), which makes for a low temperature for the onset of DSA (∼0.17 Tm, where Tm is the melting temperature) and is indicative of a pipe character of the diffusion. It is assumed that the obstacles to the motion of dislocations in these crystals are impurity complexes, the strength of which increases during DSA as a result of the pipe diffusion of impurity atoms along dislocations.
ru
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
Физика низких температур
Низкотемпературная физика пластичности и прочности
Низкотемпературное деформационное старение в сплавах In-Pb в условиях релаксации напряжений
Low-temperature strain aging in In–Pb alloys under conditions of stress relaxation
Article
published earlier
spellingShingle Низкотемпературное деформационное старение в сплавах In-Pb в условиях релаксации напряжений
Фоменко, Л.С.
Низкотемпературная физика пластичности и прочности
title Низкотемпературное деформационное старение в сплавах In-Pb в условиях релаксации напряжений
title_alt Low-temperature strain aging in In–Pb alloys under conditions of stress relaxation
title_full Низкотемпературное деформационное старение в сплавах In-Pb в условиях релаксации напряжений
title_fullStr Низкотемпературное деформационное старение в сплавах In-Pb в условиях релаксации напряжений
title_full_unstemmed Низкотемпературное деформационное старение в сплавах In-Pb в условиях релаксации напряжений
title_short Низкотемпературное деформационное старение в сплавах In-Pb в условиях релаксации напряжений
title_sort низкотемпературное деформационное старение в сплавах in-pb в условиях релаксации напряжений
topic Низкотемпературная физика пластичности и прочности
topic_facet Низкотемпературная физика пластичности и прочности
url https://nasplib.isofts.kiev.ua/handle/123456789/129245
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