Cold spraying (CS) is one of the most recently used additive manufacturing (AM) processes that allow forming large 3D objects efficiently without severe thermal effects. However, due to some limitations of the CSAM process, it is difficult to achieve the desired geometry with high precision. As a potential solution to this issue, CSAM process coupled machining, that is, hybrid addition and subtraction manufacturing, is proposed to achieve desired accuracy and reliable shape. Therefore, it is necessary to assess the mechanical reliability of multilayer deposits deposited by CSAM + machining processes before that. In this work, different bi-deposits were obtained via hybrid CSAM. The adhesion performance at the bonding interface of bi-deposits was assessed by mechanical measurements including tensile and shear failure tests. The morphology of fracture surfaces was observed by scanning electron microscope. The results showed that CSAM bi-deposits with different materials and different interface states had different adhesion effects: the adhesion effect of soft/soft bi-deposits was the best, followed by hard/hard bi-deposits, and hard/soft bi-deposits were the worst. This is due to the fact that hard CS deposits are difficult to deform, making it difficult to embed with particles and build a good bonding; The bonding interface without any treatment had the best adhesion effect, followed by the milling + grit-blasting surfaces, and the milling surfaces performed the worst. The interface’s roughness is the major influencing factor. Roughening of bonding interface promotes more embedding and interlocking effect, which improves bonding strength.

冷喷涂 (CS) 是最近使用的增材制造 (AM) 工艺之一，可以有效地形成大型 3D 物体而不会产生严重的热效应。然而，由于 CSAM 工艺的一些限制，很难以高精度实现所需的几何形状。作为该问题的潜在解决方案，提出了 CSAM 工艺耦合加工，即混合加减法制造，以实现所需的精度和可靠的形状。因此，有必要在此之前评估 CSAM+ 加工工艺沉积的多层沉积物的机械可靠性。在这项工作中，通过混合 CSAM 获得了不同的双沉积物。通过包括拉伸和剪切破坏测试在内的机械测量来评估双沉积物粘合界面处的粘合性能。断口形貌用扫描电镜观察。结果表明，不同材料、不同界面态的CSAM双镀层具有不同的粘附效果：软/软双镀层的粘附效果最好，硬/硬双镀层次之，硬/软双镀层的粘附效果最好。是最糟糕的。这是因为硬的 CS 沉积物很难变形，因此很难嵌入颗粒并建立良好的粘合；未进行任何处理的结合界面附着效果最好，其次是铣削+喷砂表面，铣削表面最差。界面的粗糙度是主要的影响因素。结合界面的粗糙化促进了更多的嵌入和互锁效果，从而提高了结合强度。