The advantages of Ti/Al composite sheet are its light weight, high specific strength, and good corrosion resistance. It can be used in aerospace, pressure vessels, and high-end kitchenware through subsequent forming. However, there is still a lack of systematic research and corresponding theoretical models on the follow-up formability of Ti/Al composite sheets. In the present study, Ti/Al composite sheets with different layer thickness ratios were obtained by adopting the cold-rolling method. The basic mechanical properties and plane anisotropy parameters were the obtained using the uniaxial tensile test. The FLCs (Forming Limit Curve) of the Ti/Al composite sheets were accurately predicted by FEM (Finite Element Method) and verified by experiments on material anisotropy and failure criteria. Moreover, considering the deep drawing process of Ti/Al composite sheets, a corresponding theoretical model was established and verified by experiments and FEM. The stress distribution and variation law of each element layer were predicted and analyzed using the theoretical model. Additionally, the process parameters and process windows that affected the formability of the parts were discussed. Finally, the matching forming die was designed, and the deep drawing experiment was carried out. The results show that the quality of the Ti/Al composite forming part is great, and the thinning and thickening rates meet the quality requirements. Thus, this systematic research helps us understand the forming law and stress distribution of Ti/Al composite sheets. Meanwhile, the established theoretical model can reduce the simulation time and promote the engineering application of Ti/Al composite sheets.

Ti/Al复合板的优点是重量轻、比强度高、耐腐蚀性好。通过后续成型，可用于航空航天、压力容器、高档厨具等。然而，目前还缺乏对Ti/Al复合薄板后续成形性的系统研究和相应的理论模型。在本研究中，采用冷轧方法获得了不同层厚比的 Ti/Al 复合板。使用单轴拉伸试验获得基本力学性能和平面各向异性参数。Ti/Al 复合板的 FLC（成形极限曲线）通过 FEM（有限元方法）准确预测，并通过材料各向异性和失效标准的实验验证。而且，考虑到Ti/Al复合板的深冲工艺，建立了相应的理论模型，并通过实验和有限元法进行验证。利用理论模型对各单元层的应力分布及变化规律进行了预测和分析。此外，还讨论了影响零件成形性的工艺参数和工艺窗口。最后设计了配套的成型模具，并进行了拉深实验。结果表明,Ti/Al复合成形件质量优良,减薄增厚率满足质量要求。因此，这项系统的研究有助于我们了解 Ti/Al 复合板的成形规律和应力分布。同时，