WEKO3
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Mechanical Properties of Welded Joint at Cryogenic Temperature for Manufacturing of ITER TF Coil Structure
https://repo.qst.go.jp/records/48198
https://repo.qst.go.jp/records/48198b83c80d8-9d7c-4e7a-a824-11f4447cd03e
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2017-07-25 | |||||
| タイトル | ||||||
| タイトル | Mechanical Properties of Welded Joint at Cryogenic Temperature for Manufacturing of ITER TF Coil Structure | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
櫻井, 武尊
× 櫻井, 武尊× 井口, 将秀× 中平, 昌隆× 齊藤, 徹× 小泉, 徳潔× 櫻井 武尊× 井口 将秀× 中平 昌隆× 齊藤 徹× 小泉 徳潔 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The ITER toroidal field (TF) coil structure is a huge welding stainless steel structure with a height of 16 m and a width of 9 m. The TF coil structure has a function to ensure the enormous electromagnetic force, whereas in ITER operation temperature (4 K). FMYJJ1, which is full austenitic stainless steel welding material having high manganese contents, is applied for manufacturing TF coil structure. However, it was reported that some micro cracks were observed on the reheating zone in the thicker welded joint during trials. Low ductility of deposited metal at 1000 °C causes these microcracks. In addition, segregation of sulfur in grain boundary decreased ductility at high temperature. Hence, reducing sulfur content is effective to reduce microcracks. Two types of FMYJJ1 were developed by applying two reducing sulfur content methods. In the previous study, applicability of these improved FMYJJ1 was tested within welded joints having 20-mm thickness. In order to confirm the validity of applicability of them, the Japan Atomic Energy Agency manufactured welded joints with 200-mm thickness, which is the representative thickness of the TF coil structure. When ductility is increased, there is a concern that yield strength is decreased. Hence, confirmation of the mechanical properties is needed. Therefore, side bend test, tensile test, and fracture toughness test at 4 K were performed. As the result, it was confirmed that the crack sensitivity was improved, and it was also confirmed that mechanical properties at 4 K satisfied ITER design requirements. | |||||
| 書誌情報 |
IEEE Transactions on Applied Superconductivity 巻 26, 号 4, p. 4204705, 発行日 2016-06 |
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| 出版者 | ||||||
| 出版者 | IEEE | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1558-2515 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1109/TASC.2016.2539686 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://ieeexplore.ieee.org/document/7428856/ | |||||
| 関連名称 | http://ieeexplore.ieee.org/document/7428856/ | |||||
