开展了Nb-Ti-Ni体系氢分离合金膜的结构和抗弯性能研究。采用XRD/SEM分析了合金膜的结构和组织特征,利用三点弯曲法测定了合金膜的抗弯强度。实验结果表明,制备的Nb-Ti-Ni合金主要由bcc-Nb(Ni,Ti)固溶体和(bcc-Nb(Ni,Ti)+β2-Ni Ti)共晶相构成,前者是渗氢功能相,后者是结构支撑相。经渗氢实验后,合金试样的抗弯性能均有下降,具有网状结构特征的合金有较好的抗弯性能。经磁场热处理后,合金微结构出现晶粒细化、晶粒沿磁场方向定向排列、固溶体相区分布改变等明显变化,合金膜的抗弯强度有不同程度的改善,其中N7试样经0°和45°磁热处理,N5试样经90°磁热处理,其抗弯性能改善明显,说明通过磁热处理可对合金微结构进行调制,从而提高其抗弯强度。 The structure and flexural properties of Nb-Ti-Ni hydrogen separation alloy films were investigated. The structure and microstructure of the alloy films were analyzed by XRD / SEM. The bending strength of the alloy films was measured by three-point bending method. The experimental results show that the prepared Nb-Ti-Ni alloy is mainly composed of bcc-Nb (Ni, Ti) solid solution and (bcc-Nb (Ni, Ti) + β2-Ni Ti) , The latter is the structural support phase. After the hydrogen permeation test, the bending properties of the alloy samples all decreased, and the alloy with the mesh structure characteristics had better bending resistance. After magnetic field heat treatment, the microstructure of the alloy appears grain refinement, the grains are aligned along the direction of the magnetic field, the distribution of the solid solution phase region changes obviously, and the bending strength of the alloy film is improved to some extent. The N7 specimen passes through 0 ° And 45 ° magnetocaloric treatment. The N5 sample is treated with 90 ° magnetocaloric heat treatment to improve the flexural properties significantly, which shows that the microstructure of the alloy can be modulated by magnetocaloric heat treatment to improve the flexural strength.