The melting point of most of the Ti-based amorphous alloys is higher than the transformation temperature of titanium alloys, bringing a detrimental effect to the joint. In this work, a multicomponent Ti₃₅Zr₂₅Be_40-xCo_x (x = 2,4,6,8,10) amorphous ribbon with a minimum melting point of 765 °C was designed through tunning the content of Co and applied as the filler metal to vacuum braze dissimilar materials TC4 and 316L steel. In order to investigate the influence of brazing temperature and holding time on the microstructure evolution and mechanical properties, the brazing was conducted at different temperatures and holding for different time. Experimental results show that the content of dendritic phases in the joint increased with increasing the brazing temperature and holding time and due to the interaction of multiple elements, fine phases TiCo, TiFe formed and uniformly dispersed in the gap area and in the interdendritic regions, strengthening the joint. Mechanical properties of the joint were evaluated by shearing test and microhardness and it was found that the shear strength firstly increased and then decreased as the temperature increased. A maximum shear strength of 225 MPa was obtained when brazed at 830 °C for 15min.

大多数Ti基非晶合金的熔点都高于钛合金的转变温度，这对接头产生不利影响。在这项工作中，多组分Ti ₃₅ Zr ₂₅ Be _40-x Co _x（x = 2,4,6,8,10）通过调整Co的含量设计出最低熔点为765°C的非晶带，并作为填充金属应用于真空钎焊异种材料TC4和316L钢。为了研究钎焊温度和保温时间对组织演变和力学性能的影响，在不同温度和保温时间下进行钎焊。实验结果表明，随着钎焊温度和保持时间的增加，接头中的树枝状相的含量增加，并且由于多种元素的相互作用，细小相TiCo，TiFe形成并均匀地分散在间隙区域和枝晶间区域中，从而增强了强度。关节。通过剪切试验和显微硬度对接头的力学性能进行了评估，发现随着温度的升高，剪切强度先升高后降低。在830°C钎焊15分钟时，可获得的最大剪切强度为225 MPa。