The void closure model is urgently needed for the subsequent hot forming process of additive manufacturing (AM) products. The influence of temperature, Lode parameter, and hydrostatic integration (G_m) on void closure was studied by representative volume element (RVE) simulations. The results show that G_m and the Lode parameter significantly influence void closure, and the temperature effect is related to material properties. A new model accounting for G_m and Lode parameter in evaluating void closure was developed using linear regression with an average error of 2.1% in comparison to RVE simulations. X-ray computed tomography (CT) was carried out at different high reductions for the AM cylinder's hot forging experiments. The new and stress-triaxiality-based (STB) models were integrated into the ABAQUS and compared with the CT measurements. Results indicate that the model is more precise than the STB model, suggesting that the model can be appropriately applied to forecast void closure during the hot forging process for AM products.

增材制造（AM）产品的后续热成型工艺迫切需要空隙闭合模型。温度，洛德参数，以及静水集成（的影响ģ_米上空隙闭合）通过代表性体积单元（RVE）模拟研究。结果表明，G _m和Lode 参数显着影响空隙闭合，温度效应与材料特性有关。G _{m 的}新模型评估空隙闭合的 Lode 参数是使用线性回归开发的，与 RVE 模拟相比，平均误差为 2.1%。X 射线计算机断层扫描 (CT) 是在不同的高压缩下进行的，用于 AM 气缸的热锻实验。新的和基于应力三轴性 (STB) 的模型被集成到 ABAQUS 中，并与 CT 测量值进行比较。结果表明，该模型比 STB 模型更精确，表明该模型可以适当地应用于预测 AM 产品热锻过程中的空隙闭合。