Abstract In this paper, brazing behaviors between ZrB2 SiC and Ti 6Al 4V by Cu foam interlayer were studied. The microstructure, formation mechanism, mechanical property and fracture surface of the joints were systematically studied. The results showed that the phases in the joints were α+β-Ti, TiCu, Ti2Cu, Cu(s, s), TiC, TiB2 and Ti3SiC2. An optimum shear strength reached up to 435 MPa at a brazing temperature of 910 °C and holding time of 20 min. Such a shear strength was 90 MPa higher than the one without the Cu foam. The obtained high shear strength of joint was discussed from microstructure and residual stress. With the increase of brazing time, Cu(s,s) gradually disappeared and the content of Ti2Cu intermetallic compound increased, which was harmful for the joint. Furthermore, the residual stress of joint with Cu foam was calculated to be 324 MPa, lower than the one without Cu foam interlayer.

中文翻译：

---

TiCuZrNi与Cu泡沫制备ZrB2SiC/Ti 6Al 4V接头的组织和剪切强度

摘要 本文研究了泡沫铜夹层对ZrB2 SiC与Ti 6Al 4V的钎焊行为。系统研究了接头的显微组织、形成机理、力学性能和断裂面。结果表明，接头中的相为α+β-Ti、TiCu、Ti2Cu、Cu(s,s)、TiC、TiB2和Ti3SiC2。在 910 °C 的钎焊温度和 20 分钟的保持时间下，最佳剪切强度高达 435 MPa。这种剪切强度比没有泡沫铜的剪切强度高 90 MPa。从显微组织和残余应力两个方面讨论了接头获得的高剪切强度。随着钎焊时间的增加，Cu(s,s)逐渐消失，Ti2Cu金属间化合物含量增加，对接头有害。此外，