Effects of the Coiling Temperature and Anisotropy on the Tensile Properties of High-Strength API X70 Linepipe Steel
In this study, the effect of the coiling temperature on the tensile properties of API X70 linepipe steel plates is investigated in terms of the microstructure and related anisotropy. Two coiling temperatures are selected to control the microstructure and tensile properties. The API X70 linepipe stee...
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2022-11-01
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| Series: | Archives of Metallurgy and Materials |
| Subjects: | |
| Online Access: | https://journals.pan.pl/Content/125115/PDF/AMM-2022-4-37-Hwang.pdf |
| _version_ | 1828185944066359296 |
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| author | Dong-Kyu Oh Seung-Hyeok Shin Sang-Min Lee Byoungchul Hwang |
| author_facet | Dong-Kyu Oh Seung-Hyeok Shin Sang-Min Lee Byoungchul Hwang |
| author_sort | Dong-Kyu Oh |
| collection | DOAJ |
| description | In this study, the effect of the coiling temperature on the tensile properties of API X70 linepipe steel plates is investigated in terms of the microstructure and related anisotropy. Two coiling temperatures are selected to control the microstructure and tensile properties. The API X70 linepipe steels consist mostly of ferritic microstructures such as polygonal ferrite, acicular ferrite, granular bainite, and pearlite irrespective of the coiling temperature. In order to evaluate the anisotropy in the tensile properties, tensile tests in various directions, in this case 0° (rolling direction), 30°, 45° (diagonal direction), 60°, and 90° (transverse direction) are conducted. As the higher coiling temperature, the larger amount of pearlite is formed, resulting in higher strength and better deformability. The steel has higher ductility and lower strength in the rolling direction than in the transverse direction due to the development of γ-fiber, particularly the {111}<112> texture. |
| first_indexed | 2024-04-12T07:11:54Z |
| format | Article |
| id | doaj.art-a69e2ea4e1e6495a9c02750928d88911 |
| institution | Directory Open Access Journal |
| issn | 2300-1909 |
| language | English |
| last_indexed | 2024-04-12T07:11:54Z |
| publishDate | 2022-11-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Metallurgy and Materials |
| spelling | doaj.art-a69e2ea4e1e6495a9c02750928d889112022-12-22T03:42:37ZengPolish Academy of SciencesArchives of Metallurgy and Materials2300-19092022-11-01vol. 67No 414871490https://doi.org/10.24425/amm.2022.141079Effects of the Coiling Temperature and Anisotropy on the Tensile Properties of High-Strength API X70 Linepipe SteelDong-Kyu Oh0https://orcid.org/0000-0001-9816-9442Seung-Hyeok Shin1https://orcid.org/0000-0002-0458-5806Sang-Min Lee2https://orcid.org/0000-0002-7686-0459Byoungchul Hwang3https://orcid.org/0000-0001-6330-4747Seoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul, 01811, Republic of KoreaSeoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul, 01811, Republic of KoreaHyundai Steel Company, Dangjin-Si, Chungnam, 31719, Republic of KoreaSeoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul, 01811, Republic of KoreaIn this study, the effect of the coiling temperature on the tensile properties of API X70 linepipe steel plates is investigated in terms of the microstructure and related anisotropy. Two coiling temperatures are selected to control the microstructure and tensile properties. The API X70 linepipe steels consist mostly of ferritic microstructures such as polygonal ferrite, acicular ferrite, granular bainite, and pearlite irrespective of the coiling temperature. In order to evaluate the anisotropy in the tensile properties, tensile tests in various directions, in this case 0° (rolling direction), 30°, 45° (diagonal direction), 60°, and 90° (transverse direction) are conducted. As the higher coiling temperature, the larger amount of pearlite is formed, resulting in higher strength and better deformability. The steel has higher ductility and lower strength in the rolling direction than in the transverse direction due to the development of γ-fiber, particularly the {111}<112> texture.https://journals.pan.pl/Content/125115/PDF/AMM-2022-4-37-Hwang.pdflinepipe steelsanisotropytensile propertytexturemicrostructure |
| spellingShingle | Dong-Kyu Oh Seung-Hyeok Shin Sang-Min Lee Byoungchul Hwang Effects of the Coiling Temperature and Anisotropy on the Tensile Properties of High-Strength API X70 Linepipe Steel Archives of Metallurgy and Materials linepipe steels anisotropy tensile property texture microstructure |
| title | Effects of the Coiling Temperature and Anisotropy on the Tensile Properties of High-Strength API X70 Linepipe Steel |
| title_full | Effects of the Coiling Temperature and Anisotropy on the Tensile Properties of High-Strength API X70 Linepipe Steel |
| title_fullStr | Effects of the Coiling Temperature and Anisotropy on the Tensile Properties of High-Strength API X70 Linepipe Steel |
| title_full_unstemmed | Effects of the Coiling Temperature and Anisotropy on the Tensile Properties of High-Strength API X70 Linepipe Steel |
| title_short | Effects of the Coiling Temperature and Anisotropy on the Tensile Properties of High-Strength API X70 Linepipe Steel |
| title_sort | effects of the coiling temperature and anisotropy on the tensile properties of high strength api x70 linepipe steel |
| topic | linepipe steels anisotropy tensile property texture microstructure |
| url | https://journals.pan.pl/Content/125115/PDF/AMM-2022-4-37-Hwang.pdf |
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