22-27 September 2019
Hyatt Regency Hotel Vancouver
Canada/Pacific timezone

Tue-Mo-Po2.13-07 [114]: Effects of Processing Conditions on Critical Current Density and Flux Pinning for Nb3Al Wires Fabricated by Jelly Roll Method

24 Sep 2019, 08:45
2h
Level 3 Posters

Level 3 Posters

Speaker

Yong Zhao (Fujian Normal University)

Description

With extremely high critical current density (Jc) and excellent strain tolerance, Nb3Al superconductor is considered as an alternative to Nb3Sn for application of high-filed magnets. However, complexity in the phase formation of Nb3Al hinders the Nb3Al superconducting wires to satisfy the requirement of engineering applications at present. Here, we have reported the improved performance of simple-structured 18-filamnet jelly-roll Nb3Al precursor long wires fabricated with rapid heating and quenching (RHQ) process. The effects of processing conditions such as tensile stress, heating current, and post-heat treatment on the performance of simple-structured 18-filamnet jelly-roll Nb-Al precursor long wires are studied in this work. It is observed that the optimized conditions have significantly improved the performance of the Nb3Al wires. Especially, a balance between the tensile stress and strand structure is important to maintain a continuous processing and a high quality of the wires. Flux pinning mechanism related with the phase formation of Nb3Al is discussed.

Primary author

Yong Zhao (Fujian Normal University)

Co-authors

Mr Chang Kun Yang (Southwest Jiaotong University) Dr Da Jin Zhou (Fujian Normal University) Prof. Guo Yan (National Engineering Laboratory for Superconducting Materials (NELSM), Western Superconducting Technologies (WST) Co., Ltd, Xi’an 710018, China.) Ms Lian Xia (Southwest Jiaotong University) Dr Ping Yuan Li (Southwest Petroleum University) Prof. Pingxiang Zhang (Northwest Institute for Non-ferrous Metal Research) Dr Xiaguang Sun (Superconductivity and New Energy R&D Center (SNERDC), Key Laboratory of Magnetic Levitation Technologies and Maglev Trains (Ministry of Education), Southwest Jiaotong University, Chengdu, Sichuan 610031,China.) Xifeng Pan (Western Superconducting Technologies Co. Ltd.(WST)) Prof. Yong Feng (WST) Yong Zhang (Southwest Jiaotong University) Dr Yongliang Chen (Superconductivity and New Energy R&D Center (SNERDC), Key Laboratory of Magnetic Levitation Technologies and Maglev Trains (Ministry of Education), Southwest Jiaotong University, Chengdu, Sichuan 610031,China.) Zhou Yu (Southwest Jiaotong University)

Presentation Materials