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 |
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| Date: | 2000 |
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| Format: | Article |
| Language: | Russian |
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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. |
Institution
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 |
| work_keys_str_mv | AT fomenkols nizkotemperaturnoedeformacionnoestarenievsplavahinpbvusloviâhrelaksaciinaprâženii AT fomenkols lowtemperaturestrainagingininpballoysunderconditionsofstressrelaxation |