Nb3Al超导材料虽然在高磁场领域有着广阔的应用前景。但是，目前制约Nb3Al超导材料大规模应用的主要因素是成本高昂的制备技术和超导A15相的元素偏析导致的性能较低。本项目正是以探索制备具有高性能、实用化的Nb3Al超导材料为研究目标，在课题组前期研究的基础上，从分析Nb(Al)ss过饱和固溶体物相结构及形态与国外文献中报道的采用RHQT法制备过程中形成的过饱和固溶体物相结构及形态的差别和联系角度入手，基于课题组自主研制的国内首台RHQT设备平台，采用控制变量法探求影响Nb(Al)ss过饱和固溶体和Nb3Al超导A15相的物相结构及微观形貌的最优工艺参数。同时，提出采用第一性原理模拟计算和实验数据结果结合分析的方法，对超导A15相的成相机理和影响Nb3Al超导材料临界电流密度（Jc）的因素进行探索研究并反馈调节前驱体的制备工艺。

Applications of Nb3Al superconducting materials have great prospects in the field of high magnetic field. However, the main factors that limit its large-scale application are the high cost in the production and the low performance due to the element segregation in the superconducting A15 phase. This project is aiming to explore the high performance Nb3Al superconducting materials and enhance the practicality, by improving the preparation technique.. Based on our previous research, we plan to start with analyzing the phase structure and morphology of Nb (Al)ss saturated solid solution, and comparing with the phase structure and morphology of Nb (Al)ss saturated solid solution prepared by RHQT method reported by foreign literature. Our research group has independently developed the first domestic RHQT apparatus. On this platform we plan to use the Controlled Variable Method to explore the optimal process parameters for the phase structure and microstructure of Nb (Al)ss oversaturated solid solution and Nb3Al superconducting A15 phase. Also, we propose an analyzation method that combines the first principle simulation and experimental results. Using this method we plan to explore the growth mechanism of the A15 superconducting phase and the factors affecting the critical current density (Jc) of Nb3Al superconducting material, and therefore improve the preparation process of the precursor.