Influence of Dynamic Strain Aging on Tensile Deformation Behavior of Alloy 617
To investigate the dynamic strain aging (DSA) behavior of Alloy 617, high-temperature tensile tests were carried out with strain rates variations of 10−3/s, 10−4/s, and 10−5/s from 24°C to 950°C. Five flow relationships, Hollomon, Ludwik, Swift, Ludwigson, and Voce, were applied to describe the tens...
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| Format: | Article |
| Language: | English |
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Elsevier
2016-12-01
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| Series: | Nuclear Engineering and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1738573316301000 |
| _version_ | 1811312290602942464 |
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| author | I.M.W. Ekaputra Woo-Gon Kim Jae-Young Park Seon-Jin Kim Eung-Seon Kim |
| author_facet | I.M.W. Ekaputra Woo-Gon Kim Jae-Young Park Seon-Jin Kim Eung-Seon Kim |
| author_sort | I.M.W. Ekaputra |
| collection | DOAJ |
| description | To investigate the dynamic strain aging (DSA) behavior of Alloy 617, high-temperature tensile tests were carried out with strain rates variations of 10−3/s, 10−4/s, and 10−5/s from 24°C to 950°C. Five flow relationships, Hollomon, Ludwik, Swift, Ludwigson, and Voce, were applied to describe the tensile true stress–strain curves, and the DSA region was defined. In describing the tensile curves, Ludwigson's equation was superior to the other equations, and the DSA region was adequately defined by this equation as plateaus at intermediate temperatures from 200°C to 700°C. It was identified that Alloy 617 is dominated by three types of serrations, known as Types D, A+B, and C. The activation energy values for each serration type were obtained by the Arrhenius equation. By using the obtained activation energy values, the serrated yielding map and the DSA mechanism were drawn and manifested. In addition, the relationship between the tensile strength and strain rate at higher temperatures above 700°C was found to be closely related to the amounts of slip lines. In the scanning electron microscope (SEM) fractographs, there was a significant difference at the low, intermediate, and high temperatures, but almost the same to the three strain rates. |
| first_indexed | 2024-04-13T10:33:46Z |
| format | Article |
| id | doaj.art-487487a3f3b54dfabc1cbed79faa4f50 |
| institution | Directory Open Access Journal |
| issn | 1738-5733 |
| language | English |
| last_indexed | 2024-04-13T10:33:46Z |
| publishDate | 2016-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Engineering and Technology |
| spelling | doaj.art-487487a3f3b54dfabc1cbed79faa4f502022-12-22T02:50:06ZengElsevierNuclear Engineering and Technology1738-57332016-12-014861387139510.1016/j.net.2016.06.013Influence of Dynamic Strain Aging on Tensile Deformation Behavior of Alloy 617I.M.W. Ekaputra0Woo-Gon Kim1Jae-Young Park2Seon-Jin Kim3Eung-Seon Kim4Pukyong National University, 365, Shinsuro, Nam-gu, Busan 608-739, South KoreaKorea Atomic Energy Research Institute, 989-111 Daedokdaero, Yuseong-gu, Daejeon, 305-353, South KoreaKorea Atomic Energy Research Institute, 989-111 Daedokdaero, Yuseong-gu, Daejeon, 305-353, South KoreaPukyong National University, 365, Shinsuro, Nam-gu, Busan 608-739, South KoreaKorea Atomic Energy Research Institute, 989-111 Daedokdaero, Yuseong-gu, Daejeon, 305-353, South KoreaTo investigate the dynamic strain aging (DSA) behavior of Alloy 617, high-temperature tensile tests were carried out with strain rates variations of 10−3/s, 10−4/s, and 10−5/s from 24°C to 950°C. Five flow relationships, Hollomon, Ludwik, Swift, Ludwigson, and Voce, were applied to describe the tensile true stress–strain curves, and the DSA region was defined. In describing the tensile curves, Ludwigson's equation was superior to the other equations, and the DSA region was adequately defined by this equation as plateaus at intermediate temperatures from 200°C to 700°C. It was identified that Alloy 617 is dominated by three types of serrations, known as Types D, A+B, and C. The activation energy values for each serration type were obtained by the Arrhenius equation. By using the obtained activation energy values, the serrated yielding map and the DSA mechanism were drawn and manifested. In addition, the relationship between the tensile strength and strain rate at higher temperatures above 700°C was found to be closely related to the amounts of slip lines. In the scanning electron microscope (SEM) fractographs, there was a significant difference at the low, intermediate, and high temperatures, but almost the same to the three strain rates.http://www.sciencedirect.com/science/article/pii/S1738573316301000Alloy 617Dynamic Strain AgingLudwigsonSerrationTensile Curves |
| spellingShingle | I.M.W. Ekaputra Woo-Gon Kim Jae-Young Park Seon-Jin Kim Eung-Seon Kim Influence of Dynamic Strain Aging on Tensile Deformation Behavior of Alloy 617 Nuclear Engineering and Technology Alloy 617 Dynamic Strain Aging Ludwigson Serration Tensile Curves |
| title | Influence of Dynamic Strain Aging on Tensile Deformation Behavior of Alloy 617 |
| title_full | Influence of Dynamic Strain Aging on Tensile Deformation Behavior of Alloy 617 |
| title_fullStr | Influence of Dynamic Strain Aging on Tensile Deformation Behavior of Alloy 617 |
| title_full_unstemmed | Influence of Dynamic Strain Aging on Tensile Deformation Behavior of Alloy 617 |
| title_short | Influence of Dynamic Strain Aging on Tensile Deformation Behavior of Alloy 617 |
| title_sort | influence of dynamic strain aging on tensile deformation behavior of alloy 617 |
| topic | Alloy 617 Dynamic Strain Aging Ludwigson Serration Tensile Curves |
| url | http://www.sciencedirect.com/science/article/pii/S1738573316301000 |
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