Mechanical and Superconducting Properties of NbTi Reinforced MgB2 Wires
作者单位：Northeastern university Northwest institute for non-ferrous metal research Western superconducting technologies Co. Ltd.
会议名称：《中国材料大会2012》
会议日期：2012年
学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学]
基 金：financially supported by the National Key Basic Research Program (No. 2011CBA00104) of China
关 键 词：NbTi reinforcing core 6-filament MgB2 wires Tensile properties Superconducting properties
摘 要：The strengthening abilities of NbTi for 6-filamentary MgB1.9 (TiC)0.08 /Nb/Cu wires and the electrical properties have been investigated. The NbTi reinforcing core was suitable for manufacturing MgB2 wires. It was observed that with the sintering temperature increasing, the yield strength decreased. The plasticity improved while the strength changed little by introduction of intermediate annealing during the cold processing of the wires. The transport properties of the wire degraded to some degree due to intermediate annealing. The mechanical properties have already met the application requirements of superconducting magnets in low field with the critical engineering current I c above 90 A (Jce exceeding 7.9×10 3 A/cm2 ) at 35 K in self field.