A ZrC-SiC and TC4 gradient structure (ZTGS) was additively manufactured through the laser deposition technique and brazing process. The research results indicated that SiC-reinforced TC4-based gradient layers could be obtained on the TC4 surface by laser deposition. ZrC-SiC and TC4 coated with gradient layers were brazed using an AgCuTi filler to fabricate the ZTGS. The effects of the gradient structure and brazing parameters on the ZTGS strength were investigated. With an increase in Layer II and Layer III thickness, the ZTGS shear strength increased. The brazing temperature and holding time affected the ZTGS shear strength by controlling the formation and distribution of the Cu₄Ti phase in the brazing zone. The strengthening mechanism of the ZTGS was revealed by analyzing the residual stress distribution in the ZTGS. Compressive residual stress was formed in ZrC-SiC adjacent to the TC4 substrate or the deposited gradient layer, which was found to negatively affect the properties of the ZTGS. The increase in gradient layer thickness reduced the maximum residual stress in ZrC-SiC, and the effect of Layer III on the residual stress was more significant than that of Layer II. The calculated residual stress evolution matched the ZTGS property values well, revealing the strengthening mechanism.

通过激光沉积技术和钎焊工艺，添加了ZrC-SiC和TC4梯度结构（ZTGS）。研究结果表明，可以通过激光沉积在TC4表面获得SiC增强的TC4基梯度层。使用AgCuTi填料钎焊涂覆有梯度层的ZrC-SiC和TC4，以制造ZTGS。研究了梯度结构和钎焊参数对ZTGS强度的影响。随着第二层和第三层厚度的增加，ZTGS的剪切强度也随之增加。钎焊温度和保持时间通过控制Cu ₄的形成和分布影响了ZTGS的剪切强度。钛相在钎焊区。通过分析ZTGS中的残余应力分布，揭示了ZTGS的强化机理。在与TC4基板或沉积的梯度层相邻的ZrC-SiC中形成了压缩残余应力，发现该残余应力会对ZTGS的性能产生负面影响。梯度层厚度的增加降低了ZrC-SiC中的最大残余应力，并且第三层对残余应力的影响比第二层更显着。计算得出的残余应力演化与ZTGS特性值非常吻合，揭示了其增强机理。