A CuTiZrNi amorphous filler metal was fabricated and utilized for brazing high Nb–TiAl alloys and GH4169 superalloys. The microstructure and mechanical properties of the high Nb–TiAl/GH4169 joints brazed from 900 °C to 1020 °C temperature range were studied. Results showed that the high Nb–TiAl/GH4169 joints consisted of three zones. The interfacial microstructure of the joints was high Nb–TiAl alloy/Ti₃Al + Al₃(Ni, Cu)Ti₂ + Al(Ni, Cu)₂Ti/AlCu₂(Ti, Zr) + (Ti, Zr)(Ni, Cu) + Ti₂(Ni, Cu)/Cr-rich (Cr, Ni, Fe)ss + Ni-rich (Ni, Cr, Fe)ss/GH4169 alloy. The element diffusion between the substrates and the filler alloy was intensified as the brazing temperature increased, and the interfacial reaction layer thickened. At 960 °C, the joint exhibited a maximum shear strength which was approximately 241.9 MPa. At higher brazing temperatures, the excessive AlCu₂(Ti, Zr) phase and coarse Ti₂(Ni, Cu) deteriorated the joint properties due to their inherent brittleness.

制造了一种 CuTiZrNi 非晶填充金属并用于钎焊高 Nb-TiAl 合金和 GH4169 高温合金。研究了在 900 °C 到 1020 °C 温度范围内钎焊的高 Nb-TiAl/GH4169 接头的微观结构和机械性能。结果表明，高 Nb-TiAl/GH4169 接头由三个区域组成。接头界面显微组织为高Nb-TiAl合金/Ti ₃ Al + Al ₃ (Ni, Cu)Ti ₂  + Al(Ni, Cu) ₂ Ti/AlCu ₂ (Ti, Zr) + (Ti, Zr)( Ni, Cu) + Ti ₂(Ni, Cu)/富铬 (Cr, Ni, Fe)ss + 富镍 (Ni, Cr, Fe)ss/GH4169 合金。随着钎焊温度的升高，基体与钎料之间的元素扩散加剧，界面反应层增厚。在 960 °C 时，接头的最大剪切强度约为 241.9 MPa。在较高的钎焊温度下，过量的 AlCu ₂ (Ti, Zr) 相和粗大的 Ti ₂ (Ni, Cu) 由于其固有的脆性而降低了接头性能。