A novel method was designed to fabricated Ti/steel clad plates via cold spray additive manufacturing (CSAM) and hot-rolling. In order to study the influence of annealing on the microstructure and mechanical properties of the Ti/steel clad plates, the as-rolled clad plates were subjected to different annealing temperatures in the order: 450, 550 and 650 °C. It was revealed that CSAM and hot-rolling promote metallurgical bonding between Ti/Ti as well as Ti/steel interfaces, thus resulting in Ti/steel clad plates with excellent mechanical properties. The annealing treatment promotes inter-diffusion of Ti and Fe across the Ti/steel interface and improves the microstructures of the as-rolled Ti/steel clad plates. The results show that when the annealing temperature is low (i.e. 450 °C), the elongation of the specimen increases while the ultimate tensile strength and shear strength both decrease through recovery and recrystallization mechanisms. However, when the annealing temperature is too high (i.e. 650 °C), the elongation and strength of the specimen decrease sharply due to the nucleation and growth of brittle TiC and FeTi compounds. The annealing, at 550 °C for 3 h, was pin-pointed as the optimum post-spray treatment to achieve superior ultimate tensile strength (564 Mpa), shear strength (280 Mpa) and elongation (18%) in the clad plate.

设计了一种通过冷喷涂增材制造（CSAM）和热轧来制造Ti /钢复合板的新方法。为了研究退火对Ti /钢复合板的显微组织和力学性能的影响，对轧制复合板按以下顺序进行了不同的退火温度：450、550和650°C。结果表明，CSAM和热轧可促进Ti / Ti以及Ti /钢界面之间的冶金结合，从而使Ti /钢复合板具有出色的机械性能。退火处理促进了Ti和Fe在Ti /钢界面上的相互扩散，并改善了轧制Ti /钢复合板的显微组织。结果表明，当退火温度较低时（即450°C），样品的伸长率增加，而极限拉伸强度和剪切强度均通过恢复和再结晶机制而降低。但是，当退火温度太高（即650°C）时，由于脆性TiC和FeTi化合物的形核和生长，样品的伸长率和强度会急剧下降。明确指出，在550°C下进行3 h退火是最佳的喷涂后处理，可在复合板上获得优异的极限拉伸强度（564 Mpa），剪切强度（280 Mpa）和伸长率（18％）。