Elastic properties of Cu–6wt% Ag alloy wires for pulsed magnets investigated by ultrasonic techniques  

作　　者：Ziyu Li Tianyi Gu Wenqi Wei Yang Yuan Zhuo Wang Kangjian Luo Yupeng Pan Jianfeng Xie Shaozhe Zhang Tao Peng Lin Liu Qi Chen Xiaotao Han Yongkang Luo Liang Li 李滋雨;顾天逸;魏文琦;袁洋;王卓;罗康健;潘宇鹏;谢剑峰;张绍哲;彭涛;柳林;谌祺;韩小涛;罗永康;李亮

机构地区：[1]Wuhan National High Magnetic Field Center,Huazhong University of Science and Technology,Wuhan 430074,China [2]School of Physics,Huazhong University of Science and Technology,Wuhan 430074,China [3]State Key Laboratory of Advanced Electromagnetic Engineering and Technology,Huazhong University of Science and Technology,Wuhan 430074,China [4]School of Materials Science and Engineering,State Key Laboratory for Materials Processing and Die&Mold Technology,Huazhong University of Science and Technology,Wuhan 430074,China

出　　处：《Chinese Physics B》2025年第2期90-95,共6页中国物理B(英文版)

基　　金：Project supported by the National Key R&D Program of China (Grant Nos. 2022YFA1602602 and 2023YFA1609600);the National Natural Science Foundation of China (Grant No. U23A20580);the open research fund of Songshan Lake Materials Laboratory (Grant No. 2022SLABFN27);Beijing National Laboratory for Condensed Matter Physics (Grant No. 2024BNLCMPKF004);Guangdong Basic and Applied Basic Research Foundation (Grant No. 2022B1515120020);the interdisciplinary program of Wuhan National High Magnetic Field Center at Huazhong University of Science and Technology (Grant No. WHMFC202132)。

摘　　要：Conductor materials with good mechanical performance as well as high electrical and thermal conductivities are particularly important to break through the current bottle-neck limit(~ 100 T) of pulsed magnets. Here, we perform systematic studies on the elastic properties of the Cu–6wt% Ag alloy wire, which is a promising candidate material for the new-generation pulsed magnets, by employing two independent ultrasonic techniques, i.e., resonant ultrasound spectroscopy(RUS) and ultrasound pulse-echo experiments. Our RUS measurements manifest that the elastic properties of the Cu–6wt% Ag alloy wires can be improved by an electroplastic drawing procedure as compared with the conventional cold drawing. We also take this opportunity to test the availability of our newly-built ultrasound pulse-echo facility at the Wuhan National High Magnetic Field Center(WHMFC, China), and the results suggest that the elastic performance of the electroplastically-drawn Cu–6wt% Ag alloy wire remains excellent without anomalous softening under extreme conditions,e.g., in ultra-high magnetic field up to 50 T and nitrogen or helium cryogenic liquids.

关 键 词：high-field magnet Cu–Ag alloy ultrasonic techniques elastic constants 

分 类 号：TG1[金属学及工艺—金属学]