冷喷涂固态增材制造沉积体形貌控制数值模拟的研究进展与展望

Research progress and prospect of numerical simulation of deposit morphology control in solid-state cold spray additive manufacturing

冷喷涂固态增材制造技术因其沉积效率高、喷涂速度快、热影响小等优点,逐渐成为各国研究热点.但由于沉积原理与目前发展较为成熟的传统激光增材制造技术具有显著不同,沉积体的形貌控制成为了限制其应用的难点.基于现有的冷喷涂条件对沉积体形貌影响的研究结果,结果表明,数值模拟成为了形貌预测与控制的主要方法.因此,综述了冷喷涂沉积体形貌预测的不同数值模拟方法,总结了各个方法的特点,最后对冷喷涂沉积体形貌模拟的现存难题及未来发展方向进行了展望.创新点:数值模拟成为了冷喷涂增材制造沉积体形貌预测的主要方法,为沉积体形貌控制和喷涂路径规划提供了理论指导.

Solid-state cold spray additive manufacturing(CSAM)technology has become increasing hot in research among many countries for its high deposition efficiency,fast deposition speed and low thermal effect.Since the deposition method of CSAM is quite different with that of the traditionally laser additive manufacturing,the control of the deposit morphology has become a major task in the application of the technology.Based on the current conditions,numerical simulation methods have been carried out to study the effect of cold spray on the morphology of deposition.The results show that numercial simulation is a good way to predict and control the deposit morphology.In this paper,various simulation methods were proposed to predict the depositon morphology of CSAM and the characteristic of each method were summarized.Finally,challenges at present and prospect of the simulation of CSAM deposit morphology were proposed.Highlights:Numerical simulation is becoming the main methodology for predicting deposit morphology for cold spray additive manufacturing,which provides theoretical guidance for morphology control of CSAM deposits and spraying path planning.