Friction stir welding of SS 316 LN and Nitronic 50 jacket sections for application in superconducting fusion magnet systems
This study explored the possibility of using friction stir welding (FSW) to join jacket web sections of two nitrogen-containing stainless steels for housing internally cooled superconducting cables which are utilized to generate magnetic fields in tokamak type fusion reactor systems. The two candida...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-09-01
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| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127522005718 |
| _version_ | 1828148823695818752 |
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| author | Supreeth Gaddam Ravi Sankar Haridas Charlie Sanabria Deepthi Tammana Diana Berman Rajiv S. Mishra |
| author_facet | Supreeth Gaddam Ravi Sankar Haridas Charlie Sanabria Deepthi Tammana Diana Berman Rajiv S. Mishra |
| author_sort | Supreeth Gaddam |
| collection | DOAJ |
| description | This study explored the possibility of using friction stir welding (FSW) to join jacket web sections of two nitrogen-containing stainless steels for housing internally cooled superconducting cables which are utilized to generate magnetic fields in tokamak type fusion reactor systems. The two candidate materials chosen for the jacket are SS 316 LN and Nitronic – 50 owing to their desirable mechanical and physical properties at cryogenic service temperature. The current manufacturing techniques to fabricate the jackets or conduits include fusion butt welding. There are some inherent disadvantages of utilizing the fusion joining process such as the possibility of sensitization and the evolution of undesirable phases detrimental to the application. An attempt has been made to fabricate the jackets with FSW to evaluate its feasibility to obtain the desired mechanical and physical properties critical to the application. The welding parameters optimization, workpiece clamping approach, microstructure evolution, hardness line profiles, tensile properties, and magnetic properties of the jacket welds corresponding to both the materials have been discussed in the paper. It has been shown that the FSW fabricated SS 316 LN jackets possessed the required strength and magnetic properties critical to this application. |
| first_indexed | 2024-04-11T21:20:57Z |
| format | Article |
| id | doaj.art-4e210a85d5244e2181070aeaca1182ae |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-04-11T21:20:57Z |
| publishDate | 2022-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-4e210a85d5244e2181070aeaca1182ae2022-12-22T04:02:37ZengElsevierMaterials & Design0264-12752022-09-01221110949Friction stir welding of SS 316 LN and Nitronic 50 jacket sections for application in superconducting fusion magnet systemsSupreeth Gaddam0Ravi Sankar Haridas1Charlie Sanabria2Deepthi Tammana3Diana Berman4Rajiv S. Mishra5Center for Friction Stir Processing, Department of Materials Science and Engineering, University of North Texas, Denton, TX 76207, USA; Advanced Materials and Manufacturing Processes Institute, University of North Texas, Denton, TX 76207, USACenter for Friction Stir Processing, Department of Materials Science and Engineering, University of North Texas, Denton, TX 76207, USA; Advanced Materials and Manufacturing Processes Institute, University of North Texas, Denton, TX 76207, USACommonwealth Fusion Systems, Cambridge, MA, USACommonwealth Fusion Systems, Cambridge, MA, USAAdvanced Materials and Manufacturing Processes Institute, University of North Texas, Denton, TX 76207, USACenter for Friction Stir Processing, Department of Materials Science and Engineering, University of North Texas, Denton, TX 76207, USA; Advanced Materials and Manufacturing Processes Institute, University of North Texas, Denton, TX 76207, USA; Corresponding author at: Center for Friction Stir Processing, Department of Materials Science and Engineering, University of North Texas, Denton, TX 76207, USA.This study explored the possibility of using friction stir welding (FSW) to join jacket web sections of two nitrogen-containing stainless steels for housing internally cooled superconducting cables which are utilized to generate magnetic fields in tokamak type fusion reactor systems. The two candidate materials chosen for the jacket are SS 316 LN and Nitronic – 50 owing to their desirable mechanical and physical properties at cryogenic service temperature. The current manufacturing techniques to fabricate the jackets or conduits include fusion butt welding. There are some inherent disadvantages of utilizing the fusion joining process such as the possibility of sensitization and the evolution of undesirable phases detrimental to the application. An attempt has been made to fabricate the jackets with FSW to evaluate its feasibility to obtain the desired mechanical and physical properties critical to the application. The welding parameters optimization, workpiece clamping approach, microstructure evolution, hardness line profiles, tensile properties, and magnetic properties of the jacket welds corresponding to both the materials have been discussed in the paper. It has been shown that the FSW fabricated SS 316 LN jackets possessed the required strength and magnetic properties critical to this application.http://www.sciencedirect.com/science/article/pii/S0264127522005718Friction stir welding (FSW)SS 316 LNNitronic 50Nuclear fusionCable-in-conduit conductor jacket |
| spellingShingle | Supreeth Gaddam Ravi Sankar Haridas Charlie Sanabria Deepthi Tammana Diana Berman Rajiv S. Mishra Friction stir welding of SS 316 LN and Nitronic 50 jacket sections for application in superconducting fusion magnet systems Materials & Design Friction stir welding (FSW) SS 316 LN Nitronic 50 Nuclear fusion Cable-in-conduit conductor jacket |
| title | Friction stir welding of SS 316 LN and Nitronic 50 jacket sections for application in superconducting fusion magnet systems |
| title_full | Friction stir welding of SS 316 LN and Nitronic 50 jacket sections for application in superconducting fusion magnet systems |
| title_fullStr | Friction stir welding of SS 316 LN and Nitronic 50 jacket sections for application in superconducting fusion magnet systems |
| title_full_unstemmed | Friction stir welding of SS 316 LN and Nitronic 50 jacket sections for application in superconducting fusion magnet systems |
| title_short | Friction stir welding of SS 316 LN and Nitronic 50 jacket sections for application in superconducting fusion magnet systems |
| title_sort | friction stir welding of ss 316 ln and nitronic 50 jacket sections for application in superconducting fusion magnet systems |
| topic | Friction stir welding (FSW) SS 316 LN Nitronic 50 Nuclear fusion Cable-in-conduit conductor jacket |
| url | http://www.sciencedirect.com/science/article/pii/S0264127522005718 |
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