Powder-in-tube (PIT) Nb₃(Al_1-xCu_x)(x = 0–0.04) superconducting wires were fabricated by rapid heating, quenching and transformation (RHQT) process. With the addition of Cu, disordered Nb₃Al A15 phase with stoichiometric composition was formed in the quenched wires and atomic long range ordering occurred during the low temperature annealing process, resulting in improvement of T_c, J_c and B_irr performance compared to the pure Nb₃Al sample. The highest T_c of 18.0 K, narrowest ΔT_c of 0.6 K and best layer J_c of about 30481 A/cm² @12 K, 4T was found in the Nb₃(Al_0·97Cu_0.03) wire, which is nearly four times of pure Nb₃Al sample. The Nb₃(Al_0·97Cu_0.03) wire also shows the highest B_irr value of 25.7T at 8 K and 12.9T at 12 K, respectively. The formed A15 phase exhibit uniform microstructure and composition. Flux pinning of the Nb₃(Al_1-xCu_x) wires follows the surface pinning mechanism, where grain boundary and stacking faults were considered as pinning centers.

 通过快速加热，淬火和转变（RHQT）工艺制造了管中粉末（PIT）Nb ₃（Al _{1- x} Cu _x）（x = 0-0.04）超导线材。与添加Cu，无序的Nb ₃的Al形成在淬火电线和原子长程有序A15相用化学计量组成时的低温退火过程中发生，从而提高的Ť _Ç，Ĵ _Ç和乙_IRR性能相比纯Nb ₃ Al样品。最高牛逼_Ç 18.0钾，最窄ΔT _Ç在Nb ₃（Al _0·97 Cu _0.03）焊丝中发现了0.6 K的铁电势和最佳的J _c约30481 A / cm ² @ 12 K，4T ，几乎是纯Nb ₃ Al样品的四倍。Nb ₃（Al _0·97 Cu _0.03）焊丝的最高B _irr值分别在8 K和22.9 T时分别为25.7T和12.9T。形成的A15相表现出均匀的微观结构和组成。Nb _3的助焊剂固定（Al _{1- x} Cu _x）线遵循表面钉扎机制，其中将晶界和堆垛层错视为钉扎中心。