Effect of interlayer cooling time on the temperature field of 5356-TIG wire arc additive manufacturi

• 作 者: Zhao Pengkang Fang Kui Tang Cheng Niu Jianping Guo Meiling
• 机 构: Shaanxi Provincial Key Laboratory of Machinery Manufacturing Equipment,Xi’an University of Technolog
• 出 处: 中国焊接
• 发表日期: 2021年2期
• 关键词: 5356 aluminum alloy wire arc additive manufacturing temperature field interlayer

In the paper,the finite element model (FEM) of wire arc additive manufacturing (WAAM) by TIG method was established by the ABAQUS soft,and the phase transformation latent heat was considered in the model.The evolution rules of temperature field at the in-terlayer with the cooling time of 10 s,30 s and 50 s were obtained by the model.The WAAM experiment were performed by 5356 alumin-um alloy welding wire with φ 1.2 mm,and the simulated temperature field were varified by the thermocouple.The result shows that the highest temperature at the molten pool center increases with the increased interlayers at the same interlayer cooling time;the highest temper-ature drops gradually and the decline is smaller with the increased interlayer cooling time at the same layer.No remelting occurs at the top layer,and at least two remelting times occur in the other layers,resulting in complex temperature field evolution.