Characteristic Features of Ultrafine-Grained Ti-45 wt.% Nb Alloy under High Cycle Fatigue; Materials; Vol. 14, iss. 18
| Источник: | Materials Vol. 14, iss. 18.— 2021.— [5365, 21 p.] |
|---|---|
| Автор-организация: | |
| Другие авторы: | , , , , , , , , |
| Примечания: | Title screen The paper presents the results of fatigue-testing ultrafine-grained and coarse-grained Ti-45 wt.% Nb alloy samples under very high cycle fatigue (gigacycle regime), with the stress ratio R = ?1. The ultrafine-grained (UFG) structure in the investigated alloy was formed by the two-stage SPD method, which included multidirectional forging (abc–forging) and multipass rolling in grooved rollers, with further recrystallization annealing. The UFG structure of the Ti-45 wt.% Nb alloy samples increased the fatigue limit under the high-cycle fatigue conditions up to 1.5 times compared with that of the coarse-grained (CG) samples. The infrared thermography method was applied to investigate the evolution of temperature fields in the samples under cyclic loading. Based on numerical morphology analysis, the scale invariance (the Hurst exponent) and qualitative differences for UFG and CG structures were determined. The latter resulted from the initiation and propagation of fatigue cracks in both ultra-fine grained and coarse-grained alloy samples under very high-cycle fatigue loading. |
| Язык: | английский |
| Опубликовано: |
2021
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| Предметы: | |
| Online-ссылка: | https://doi.org/10.3390/ma14185365 |
| Формат: | Электронный ресурс Статья |
| Запись в KOHA: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=668824 |
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| 200 | 1 | |a Characteristic Features of Ultrafine-Grained Ti-45 wt.% Nb Alloy under High Cycle Fatigue |f A. M. Mayrambekova, A. Yu. Eroshenko, V. A. Oborin [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 54 tit.] | ||
| 330 | |a The paper presents the results of fatigue-testing ultrafine-grained and coarse-grained Ti-45 wt.% Nb alloy samples under very high cycle fatigue (gigacycle regime), with the stress ratio R = ?1. The ultrafine-grained (UFG) structure in the investigated alloy was formed by the two-stage SPD method, which included multidirectional forging (abc–forging) and multipass rolling in grooved rollers, with further recrystallization annealing. The UFG structure of the Ti-45 wt.% Nb alloy samples increased the fatigue limit under the high-cycle fatigue conditions up to 1.5 times compared with that of the coarse-grained (CG) samples. The infrared thermography method was applied to investigate the evolution of temperature fields in the samples under cyclic loading. Based on numerical morphology analysis, the scale invariance (the Hurst exponent) and qualitative differences for UFG and CG structures were determined. The latter resulted from the initiation and propagation of fatigue cracks in both ultra-fine grained and coarse-grained alloy samples under very high-cycle fatigue loading. | ||
| 461 | |t Materials | ||
| 463 | |t Vol. 14, iss. 18 |v [5365, 21 p.] |d 2021 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a Ti-45 wt.% Nb alloy | |
| 610 | 1 | |a ultrafine-grained structure | |
| 610 | 1 | |a fatigue testing | |
| 610 | 1 | |a surface morphology | |
| 610 | 1 | |a Hurst exponent | |
| 610 | 1 | |a infrared thermography method | |
| 610 | 1 | |a ультрамелкозернистая структура | |
| 610 | 1 | |a показатель Херста | |
| 610 | 1 | |a инфракрасная термография | |
| 701 | 1 | |a Mayrambekova |b A. M. |g Aykol Mayrambekovna | |
| 701 | 1 | |a Eroshenko |b A. Yu. |g Anna Yurjevna | |
| 701 | 1 | |a Oborin |b V. A. |g Vladimir Aleksandrovich | |
| 701 | 1 | |a Bannikov |b M. V. |g Mikhail Vladimirovich | |
| 701 | 1 | |a Chebodaeva |b V. V. |g Valentina Vadimovna | |
| 701 | 1 | |a Terekhina |b A. I. |g Alena | |
| 701 | 1 | |a Naymark |b O. B. |g Oleg Borisovich | |
| 701 | 1 | |a Dmitriev |b A. I. |g Andrey Ivanovich | |
| 701 | 1 | |a Sharkeev |b Yu. P. |c physicist |c Professor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences |f 1950- |g Yury Petrovich |3 (RuTPU)RU\TPU\pers\32228 |9 16228 | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Исследовательская школа физики высокоэнергетических процессов |c (2017- ) |3 (RuTPU)RU\TPU\col\23551 |
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| 856 | 4 | |u https://doi.org/10.3390/ma14185365 | |
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