Quick Search:       Advanced Search
王庆阳,闫果,郗丹,杨芳,潘熙锋,熊晓梅,冯建情,李成山,刘向宏,张平祥.多芯MgB2超导线材的挤压制备技术及微观结构研究[J].稀有金属材料与工程(英文),2019,48(4):1293~1297.[WANG Qingyang,YAN Guo,XI Dan,YANG Fang,PAN Xifeng,Xiongbn Xiaomei,Feng Jianqing,LI Chengshan,LIU Xianghong and ZHANG Pingxiang.Extrusion procedure and microstructure properties of multi-filamentary MgB2 superconducting wires[J].Rare Metal Materials and Engineering,2019,48(4):1293~1297.]
Extrusion procedure and microstructure properties of multi-filamentary MgB2 superconducting wires
Download Pdf  View/Add Comment  Download reader
Received:August 26, 2017  Revised:November 13, 2017
DOI:
Key words: MgB2 wires, multi-filamentary, extrusion, microstructure
Foundation item:国家自然科学基金(51772250,51372207);陕西省自然科学基金(2014JM2-5060,2017ZDJC-19);国家重点研发计划(2017YFB0902303)
Author NameAffiliation
WANG Qingyang,YAN Guo,XI Dan,YANG Fang,PAN Xifeng,Xiongbn Xiaomei,Feng Jianqing,LI Chengshan,LIU Xianghong and ZHANG Pingxiang  
Hits: 62
Download times: 18
Abstract:
      For improving the combine strength among filamentaries and the density of superconducting cores in multi filamentary MgB2 wire, the traditional hot-extrusion method was introduced to the MgB2 wires fabrication process. MgB2 wire with the conducting structure of 180 cores was fabricated by the extrusion method. Compound billet is extruded from Φ64 mm to Φ20 mm in diameter with one pass extrusion. The extruded wire is fabricated to the final size Φ0.8 mm in diameter with cold drawing and mid-annealing process. Superconducting filamentary is uniformly distributed and the thickness of Nb diffusion barrier is also smooth without breaking points through the microstructure analysisof the wires at each fabrication stages. The hectometer MgB2 wires is fabricated successful by this method. The extrusion technique is promising for producing long MgB2 superconducting wires.