王鹏飞,张平祥,梁明,金利华,徐晓燕,李成山.Cu-Nb-C-Nb多芯复合线材的制备及表征[J].稀有金属材料与工程,2019,47(3):936~940.[WANG Peng-fei,ZHANG Ping-xiang,LIANG Ming,JIN Li-hua,XU Xiao-yan,LI Cheng-shan.Preparation and Characterization of Cu-Nb-C-Nb Micro-composites wires[J].Rare Metal Materials and Engineering,2019,47(3):936~940.]
Cu-Nb-C-Nb多芯复合线材的制备及表征
投稿时间:2017-07-23  修订日期:2018-12-25
中文关键词:  石墨烯包覆铌粉  集束拉拔技术  塑性变形机制  Cu-Nb-C-Nb多芯复合线材
基金项目:国家自然科学(51601151),国家重大专项支持项目(2016YFA0401701),陕西省自然(2017ZDJC-19)
中文摘要:
      本文采用粉末套管工艺,结合集束拉拔技术制备出了石墨烯包覆铌粉末增强Cu-Nb的多芯复合线材(3#)、石墨烯未包覆铌粉末增强Cu-Nb多芯复合线材(4#)、及纯铌粉增强Cu-Nb多芯复合线材(5#)三种结构复合材料。通过优化热处理工艺发现,线材在750 °C/60 h热处理后,线材的Nb (110)衍射峰强度相比加工态样品发生了明显的增强,微观结构及EDS能谱分析说明,高温热处理有利于Cu/Nb界面之间的轻微扩散,增加了界面的结合强度,线材的塑性和韧性得到了明显改善。通过对三种线材微观结构、力学性能及电学性能的分析,结果表明石墨烯包覆铌粉末的Cu-Nb-C-Nb线材导电性能优于其它两种线材,最后分析了三种不同线材的塑性变形机制及引起性能变化的微观机理。提出了进一步优化工艺的思路,为高强高导多元结构复合线材的制备开创了一种全新的方向。
Preparation and Characterization of Cu-Nb-C-Nb Micro-composites wires
英文关键词:Graphene coated niobium powder  Bundling and drawing process  Plastic deformation mechanism  
英文摘要:
      In this paper, a multi-core composite wire (3 #) with graphene-coated niobium powder reinforced Cu-Nb was prepared by using powder casting technology, Cu-Nb multi-core composite wire (4#) reinforced the grapheme and niobium powder, and Cu-Nb multi-core composite wire (5#) reinforced pure niobium powder. It is found that the i ntensity of Nb (110) diffraction peak is obviously enhanced after 800 ℃ / 60h heat treatment by the optimized heat treatment process.The microstructure and energy spectrum analysis (EDS) show that the high temperature heat treatment is favorable for the slight diffusion of Cu / Nb interface between, the bonding strength of interface and wire plasticity have been significantly improved.The results show that the conductivity of Cu-Nb-C-Nb wire with graphene-coated niobium powder is better than that of the other two kinds of wires. Finally, Plastic deformation mechanism and micro-mechanism of performance change of the three different materials are analysised.The idea of further optimization of the process is put forward, which opens up a new direction for the preparation of high strength and high conductivity multi-element composite wire.
作者单位E-mail
王鹏飞 西北工业大学材料学院 wpf_chenxi@163.com 
张平祥 西北工业大学材料学院  
梁明 西北有色金属研究院  
金利华 西北有色金属研究院  
徐晓燕 西北有色金属研究院  
李成山 西北有色金属研究院  
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