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为了制备能够满足YBCO涂层导体所需的高强、低磁性基带,采用轧制辅助双轴织构技术(RABiTS)制备Ni-5at%W(Ni5W)合金基带,在不同温度及热处理制度下进行再结晶热处理。采用背散射电子衍射技术对基带织构情况进行研究,结果表明,Ni5W合金基带的初始再结晶温度为700℃,随退火温度升高,轧制织构不断向立方织构转变,在1200℃时立方织构百分含量接近100%。采用700℃预退火30 min后在进行1200℃退火1 h后,基带立方织构含量仍然很高,并且比一步退火法获得的立方织构更为锐利。
In order to prepare the high-strength, low-magnetic base tapes that can meet the requirements of YBCO coated conductors, Ni-5at% W (Ni5W) alloy base tapes were prepared by rolling assisted biaxial texturing (RABiTS) technology and annealed under different temperature and heat treatment conditions Crystallization heat treatment. The results of backscattering electron diffraction show that the initial recrystallization temperature of Ni5W alloy base band is 700 ℃. With the increase of annealing temperature, the rolling texture changes continuously to cubic texture. At 1200 ℃ Cube texture percentage close to 100%. After pre-annealing at 700 ℃ for 30 min, the cubic texture of the matrix was still high after annealed at 1200 ℃ for 1 h and was more sharp than the cubic texture obtained by one-step annealing.