| 摘要: |
| Cu-Nb复合材料兼具高强度、高电导率以及高热稳定性等优势，已成为脉冲磁体和电磁线圈导体材料的首选。本文通过集束拉拔技术成功制备出了Nb管增强Cu-Nb三次复合线材。综合利用TEM/HRTEM、EBSD等表征和测试手段分析冷拉变形后材料的微观组织，揭示了大塑性变形后Nb管增强Cu-Nb复合线材的微结构演变特征。并基于线材强度与Nb芯丝的量化关系分析，探讨了Nb管增强Cu-Nb复合线材的强化机理。 |
| 关键词: Cu-Nb复合线材，集束拉拔技术，织构取向，强化机理 |
| DOI： |
| 投稿时间：2023-03-09修订日期：2023-05-05 |
| 基金项目:国家自然科学基金项目（52073233），陕西省重点研发计划一般项目（2022GY-376） |
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| Study on the structure and mechanical properties of Cu-Nb composite wire |
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| Abstract: |
| Cu-Nb composite has the advantages of high strength, high conductivity and high thermal stability, and has become the first choice of pulsed magnets and electromagnetic coil conductor materials. In this paper, Nb tube reinforced Cu-Nb cubic composite wire was prepared successfully by bundling and drawing technique. TEM/HRTEM, EBSD and other characterization and testing methods were used to analyze the microstructure of the materials after cold drawing deformation. The microstructure evolution characteristics of Nb tube-reinforced Cu-Nb composite wires after large plastic deformation were revealed. Based on the quantitative relationship between wire strength and Nb core wire, the strengthening mechanism of Nb tube reinforced Cu-Nb composite wire was discussed. |
| Key words: Cu-Nb composite wire, accumulative drawing and bundling process, texture orientation, strengthening mechanism |