In this study, Ti₅Si₃/Ti₃Al composite was successfully vacuum-brazed with Ti-33Zr-16Cu-13Ni (wt.%) filler alloy. The typical interfacial microstructure of the joints presented a symmetrical characteristic, which mainly consisted of Ti₃Al, Ti₂Ni, and α-Ti phases. The effects of brazing temperature and holding time on the interfacial microstructure and mechanical properties of the joints were investigated in details. The optimized average shear strength of 224 MPa was obtained when brazing at 900 °C for 5 min. The high temperature shear strength of the joints reached 377 and 405 MPa at 600 and 650 °C, respectively. In addition, the microstructure evolution mechanism of the joints was put forward based on the experimental analysis.

在这项研究中，成功地用Ti-33Zr-16Cu-13Ni（wt。％）填充合金对Ti ₅ Si ₃ / Ti ₃ Al复合材料进行了真空钎焊。接头的典型界面组织呈现对称性，主要由Ti ₃ Al，Ti _2组成Ni和α-Ti相。详细研究了钎焊温度和保温时间对接头界面组织和力学性能的影响。在900°C钎焊5分钟时，可获得224 MPa的最佳平均剪切强度。在600和650°C下，接头的高温剪切强度分别达到377和405 MPa。另外，在实验分析的基础上，提出了接头的微观组织演化机理。