Additive friction stir deposition (AFSD) is a solid state coating process as well as a developing solid state additive manufacturing technology. AFSD has numerous advantages over friction surfacing coating technology. However, extensive research has demonstrated that a relationship between microstructure and mechanical properties exists at present. On the other hand, a few research focus on temperature field evolution.The temperature field during AFSD is examined in this paper using a combined experimental-numerical approach. According to characterizations of AFSD thermal process, AFSD was classified into friction preheating stages and steady deposition stages. The friction preheating model and the steady deposition heat model are both established. The experiment is carried out to confirm the temperature difference between the simulation and the experiment, where experimental and numerical results correspond well. The AFSD process parameters include rotational speed, feed speed, and deposition rate. The purpose of this research is to examine the effect of process parameters on heat input during the production of aluminum alloy coating by AFSD. The results shows that rotational speed is a critical element that influences heat input. Overall, the comparisons of experimental and numerical results show that the numerical model's accuracy is satisfactory, and the effect of process parameters on heat input was thoroughly investigated.

中文翻译：

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添加剂搅拌摩擦沉积热过程的数值和实验研究

增材搅拌摩擦沉积（AFSD）是一种固态涂层工艺，也是一种正在发展的固态增材制造技术。与摩擦堆焊涂层技术相比，AFSD 具有许多优势。然而，广泛的研究表明，目前微观结构和机械性能之间存在关系。另一方面，一些研究集中在温度场演化上。本文采用实验与数值相结合的方法研究了 AFSD 期间的温度场。根据AFSD热过程特征，AFSD分为摩擦预热阶段和稳定沉积阶段。建立了摩擦预热模型和稳态沉积热模型。进行实验是为了确认模拟和实验之间的温度差异，实验和数值结果吻合良好。 AFSD 工艺参数包括转速、进给速度和沉积速率。本研究的目的是研究 AFSD 生产铝合金涂层过程中工艺参数对热输入的影响。结果表明，转速是影响热输入的关键因素。总体而言，实验与数值结果的比较表明，数值模型的精度令人满意，并且深入研究了工艺参数对热输入的影响。