ReBCO二代高温超导导体以其高不可逆磁场和机械强度等优点，成为高场超导技术领域最具发展潜力的超导材料之一。本项目旨在针对未来高场应用核心的科学问题—机电强关联行为和临界电流可逆应变极限特性，开展基于国产二代高温超导导体综合性能的研究。通过14T磁场下样品机械和电磁特性的实验，表征并分析应变峰值位置(εp)、不可逆应变极限(εirr)及应变关联性参数(a值)三个典型特征参数；建立超导复合材料结构本征方程和形变模型，预测材料属性和结构参数对ReBCO导体临界电流可逆应变的影响；将动态疲劳效应和超导-正常态过渡参数(n值)应用到ReBCO导体临界电流可逆应变极限判据的评定中(εre-lim)，为可逆应变极限判据的确定提供了新的分析途径。该项目的实施不仅能够首次完整表征国产二代高温超导导体高场应用潜力，还能为高场/高强度导体性能进一步提升提出解决方案，为其在未来高场磁体领域的应用打下坚实的基础。

ReBCO High temperature superconductor (HTS) coated conductor is the most promising material in the future high field application due to the higher irreversible magnetic field and mechanical property compared with other low temperature superconductor (LHS) and HTS. The objective of this project is to solve the key scientific problem of in future high field application—Mechanical-Electro Strength-dependent Behavior and Reversible Strain Limit Characteristics Study on ReBCO Superconductor；Meanwhile, study on the comprehensive properties of domestic ReBCO coated conductor. The three typical characteristic parameter, peak strain position (εp)、irreversible strain limit (εirr) and strain correlation parameter (a value) are characterized by measuring the mechanical and electromagnetic properties of samples under 14 T field. The Eigen equation of structural materials and deformation model of superconducting composite are established to predict the effect of material properties and structural parameters on the reversible strain of ReBCO coated conductors. Dynamic fatigue effect and superconducting-normal transition parameter (n value) are applied to the evaluation of εirr criterion which provides a new analytical path for the determination. The implementation of this project can not only fully characterize the high field application potential of domestic ReBCO coated conductors for the first time, but also provide the solutions for further improving the performance with high field and strength which lays a solid foundation for its high field application in future.