Speaker
Description
Cu-based composites with high strength and electrical conductivity are core conductor materials for high-field pulsed magnets. High-performance composite wires have been well developed by Northwest Institute for Non-ferrous Metal Research (NIN), such as Cu-Nb and Cu-Ta materials. In this study, the jelly-roll + accumulative drawing and bundling (ADB) process has been inventively applied for the fabrication of these composites, which further enhanced the volume fraction of dual-phase interface and optimized comprehensive performance. The evolution of structure, strength and conductivity of composites during deformation was investigated through the combination of experiment and simulation methods. Besides, the relationship between structure and strength along with conductivity was studied and discussed. Based on these results, an effective strategy for structure design was proposed, which could substantively help with the development of ultra-high field pulsed magnets (110T).
