Nb管增强Cu-Nb复合线材的结构及力学性能研究  

Study on Structure and Mechanical Properties of Cu-Nb Composite Wire Reinforced with Nb Tube

作　　者：贾佳林[1] 吴艺凡 梁明[1] 王鹏飞[1] JIA Jiaint;WU Yifan;LIANG Ming;WANG Pengfei(Northwest Institute for Nonferrous Metal Research,Xi'an 710016)

机构地区：[1]西北有色金属研究院,西安710016

出　　处：《低温物理学报》2023年第3期142-147,共6页Low Temperature Physical Letters

基　　金：国家自然科学基金项目(编号:52073233);陕西省重点研发计划一般项目(2022GY-376)资助的课题。

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了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.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 contribution,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.

关 键 词：Cu-Nb复合线材 集束拉拔技术 织构取向 强化机理 

分 类 号：TB331[一般工业技术—材料科学与工程]