二代高温超导带材的机械特性研究进展

以 YBCO(YBa2Cu3 O7 -δ ) 为代表的二代高温超导带材因具有高临界转变温度、 高临界磁场和强载流能力,受到了国际学界高度关注, 在各个领域具有广泛的应用前景. 二代高温超导带材在绕制、 冷却和运行过程中会受到不同来源的外力作用, 且超导带材的韧性、 延展性较差, 因此其机械性能是影响安全性与设备运行可靠性的关键.本文基于二代超导带材各向异性的特点, 对超导带材轴向、 横向、 弯曲三个方向的静态机械性能及疲劳性能进行了介绍. 同时, 也对超导带材各方向机械性能的测试方法、 影响因素及机理进行了总结

Research Progress on Mechanical Property of Second-generation High Temperature Superconducting Tapes

By the advantages of high critical temperature, large current-carrying capacity and high critical magnetic field, the second generation (2G)high temperature superconductors (HTS)have a wide application prospect in various fields. The 2G HTS tapes will be affected by forces from various sources during the process of winding, cooling and operation, so the mechanical properties of HTS tapes are a crucial factor in affecting the reliability of equipment in their applications. Based on the anisotropy of the 2G HTS tapes, the static mechanical and fatigue properties of the HTS tapes are introduced from axial, transverse and bending directions. Meanwhile, this review also summarizes the testing devices, influencing factors and causes of mechanical properties in each direction.