Hydrogen trapping and hydrogen embrittlement (HE) susceptibility of X70 grade high-strength, acid-resistant, submarine pipeline steel with Mg treatment
The hydrogen embrittlement (HE) susceptibility of X70 grade, Acid-resistant, submarine pipeline steel with Mg treatment was studied via constant loading and slow strain rate tension (SSRT). The hydrogen diffusion and trapping behaviour in the tested steels treated with different Mg content was analy...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-05-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423004738 |
| _version_ | 1827920396338331648 |
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| author | Fengjun Lang Feng Huang Jiangbo Yue Liwei Li Jinqiao Xu Jing Liu |
| author_facet | Fengjun Lang Feng Huang Jiangbo Yue Liwei Li Jinqiao Xu Jing Liu |
| author_sort | Fengjun Lang |
| collection | DOAJ |
| description | The hydrogen embrittlement (HE) susceptibility of X70 grade, Acid-resistant, submarine pipeline steel with Mg treatment was studied via constant loading and slow strain rate tension (SSRT). The hydrogen diffusion and trapping behaviour in the tested steels treated with different Mg content was analysed by electrochemical hydrogen permeation testing and thermal desorption spectroscopy (TDS). The results suggested that micro/nanocomposite inclusions with “core-shell” structures obtained via Mg treatment have a greater activation energy of hydrogen desorption. On the one hand, this kind of inclusions can trap more hydrogen and reduce the diffusion coefficient of hydrogen in steel; on the other hand, the internal rigid core of Al–Mg–Ti–O and external soft shell of MnS not only play a role in stress shielding but also hinder the initiation and expansion of stress cracks. For the X70 grade high-strength, acid-resistant submarine pipeline steel, an optimal Mg addition amount is 0.003% (mass fraction). |
| first_indexed | 2024-03-13T04:10:51Z |
| format | Article |
| id | doaj.art-f8f8ea0642db47f499f27f831a66b095 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-13T04:10:51Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-f8f8ea0642db47f499f27f831a66b0952023-06-21T06:55:30ZengElsevierJournal of Materials Research and Technology2238-78542023-05-0124623638Hydrogen trapping and hydrogen embrittlement (HE) susceptibility of X70 grade high-strength, acid-resistant, submarine pipeline steel with Mg treatmentFengjun Lang0Feng Huang1Jiangbo Yue2Liwei Li3Jinqiao Xu4Jing Liu5The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, Hubei 430081, China; Baosteel Central Research Institute, Wuhan, Hubei 430080, ChinaThe State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, Hubei 430081, China; Corresponding author.Baosteel Central Research Institute, Wuhan, Hubei 430080, ChinaBaosteel Central Research Institute, Wuhan, Hubei 430080, ChinaBaosteel Central Research Institute, Wuhan, Hubei 430080, ChinaThe State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, Hubei 430081, ChinaThe hydrogen embrittlement (HE) susceptibility of X70 grade, Acid-resistant, submarine pipeline steel with Mg treatment was studied via constant loading and slow strain rate tension (SSRT). The hydrogen diffusion and trapping behaviour in the tested steels treated with different Mg content was analysed by electrochemical hydrogen permeation testing and thermal desorption spectroscopy (TDS). The results suggested that micro/nanocomposite inclusions with “core-shell” structures obtained via Mg treatment have a greater activation energy of hydrogen desorption. On the one hand, this kind of inclusions can trap more hydrogen and reduce the diffusion coefficient of hydrogen in steel; on the other hand, the internal rigid core of Al–Mg–Ti–O and external soft shell of MnS not only play a role in stress shielding but also hinder the initiation and expansion of stress cracks. For the X70 grade high-strength, acid-resistant submarine pipeline steel, an optimal Mg addition amount is 0.003% (mass fraction).http://www.sciencedirect.com/science/article/pii/S2238785423004738Mg treatmentHydrogen trappingHydrogen embrittlementX70 submarine pipeline steel |
| spellingShingle | Fengjun Lang Feng Huang Jiangbo Yue Liwei Li Jinqiao Xu Jing Liu Hydrogen trapping and hydrogen embrittlement (HE) susceptibility of X70 grade high-strength, acid-resistant, submarine pipeline steel with Mg treatment Journal of Materials Research and Technology Mg treatment Hydrogen trapping Hydrogen embrittlement X70 submarine pipeline steel |
| title | Hydrogen trapping and hydrogen embrittlement (HE) susceptibility of X70 grade high-strength, acid-resistant, submarine pipeline steel with Mg treatment |
| title_full | Hydrogen trapping and hydrogen embrittlement (HE) susceptibility of X70 grade high-strength, acid-resistant, submarine pipeline steel with Mg treatment |
| title_fullStr | Hydrogen trapping and hydrogen embrittlement (HE) susceptibility of X70 grade high-strength, acid-resistant, submarine pipeline steel with Mg treatment |
| title_full_unstemmed | Hydrogen trapping and hydrogen embrittlement (HE) susceptibility of X70 grade high-strength, acid-resistant, submarine pipeline steel with Mg treatment |
| title_short | Hydrogen trapping and hydrogen embrittlement (HE) susceptibility of X70 grade high-strength, acid-resistant, submarine pipeline steel with Mg treatment |
| title_sort | hydrogen trapping and hydrogen embrittlement he susceptibility of x70 grade high strength acid resistant submarine pipeline steel with mg treatment |
| topic | Mg treatment Hydrogen trapping Hydrogen embrittlement X70 submarine pipeline steel |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423004738 |
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