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We are approaching to high mechanical strength of bronze processed Nb3Sn wire by internal matrix reinforcement using Cu-Sn-In ternary alloy. The In solute element remained homogeneously in the wire matrix after Nb3Sn synthesis, and it contributed to transforming (Cu, In) solid solutions. And (Cu, In) solid solution acted as the protective material of Nb3Sn phase and contributed to improving the mechanical strength of the Nb3Sn wire. In this study, we investigated the Hot Isostatic Press (HIP) treatment on the further mechanical strength improvement of internal matrix reinforced Nb3Sn wire. Tensile stress and strain sensitivities of transport critical current (Ic) property were enhanced by HIP processing because many micro-sized vacancies, which were the originpointsofthefatigueonthe(Cu,In)matrix,were removed. We found the HIP treatment contributes to mechanical strength enhancement of the internal matrix reinforced Nb3Sn wire.

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• In Copyright
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キーワード: Nb3Sn, internal matrix reinforcement, ternary bronze matrix, mechanical strength, HIP treatment

刊行年月日: 2025-02-11

出版者: Institute of Electrical and Electronics Engineers (IEEE)

掲載誌:

• IEEE Transactions on Applied Superconductivity (ISSN: 10518223) vol. 35 issue. 5 p. 1-4

研究助成金:

• High Field Laboratory for Superconducting Materials
• Institute of Materials Research, Tohoku University 202212-HMKPC-0040
• JSPS KAKENHI 20H01889
• National Institute for Fusion Science

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5584

公開URL: https://doi.org/10.1109/tasc.2025.3540804

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更新時刻: 2025-07-14 12:30:20 +0900

MDRでの公開時刻: 2025-07-14 12:17:17 +0900