全文下载: 202103015.pdf
文章编号: 1672-6987(2021)03-0094-07; DOI: 10.16351/j.1672-6987.2021.03.015
郭怀志1, 潘家敬1*, 赵朋成1, 刘佳奇1, 谭龙1, 张金衡2(1.青岛科技大学 机电工程学院,山东 青岛 266061;2.山东大学 材料科学与工程学院,山东 济南 250061)
摘要: 利用Deform-3D软件对2219铝合金搅拌摩擦焊(FSW)的温度场和流场进行了数值分析。温度场的结果表明,混合头在焊接过程中的最高温度为410 ℃,不超过2219铝合金的熔点。总体温度分布在与肩部接触的表面处最高,并沿着工件的厚度方向降低。温度分布在前进侧和返回侧是不对称的,返回侧的温度要高于前进侧。流场结果表明:金属的整体流动呈漩涡状,工件表面的流速大于内部速度。当搅拌头的转速从20π rad·s-1增加到40π rad·s-1时,在搅拌头附近,特别是在工件的上表面附近流动趋势增强。
关键词: 2219铝合金; 搅拌摩擦焊接; 温度场; 流场; 数值模拟
中图分类号: TG 456.7文献标志码: A
引用格式: 郭怀志, 潘家敬, 赵朋成, 等. 2219铝合金搅拌摩擦焊接过程数值分析 [J]. 青岛科技大学学报(自然科学版), 2021, 42(3): 94-100.
GUO Huaizhi, PAN Jiajing, ZHAO Pengcheng, et al. Numerical analysis of friction stir welding of 2219 aluminum alloy[J]. Journal of Qingdao University of Science and Technology(Natural Science Edition), 2021, 42(3): 94-100.
Numerical Analysis of Friction Stir Welding of 2219 Aluminum AlloyGUO Huaizhi1, PAN Jiajing1, ZHAO Pengcheng1, LIU Jiaqi1, TAN Long1, ZHANG Jinheng2
(1.College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, China;
2.School of Materials Science and Engineering, Shandong University, Jinan 250061, China)
Abstract: This paper numerically analyzed the temperature field and flow field of 2219 aluminum alloy friction stir welding (FSW) using Deform-3D software. The results of the temperature field show that the maximum temperature of the mixing head during the welding process is 410 ℃, which does not exceed the melting point of the 2219 aluminum alloy. The overall temperature distribution is highest at the surface in contact with the shoulder, and the temperature decreases along the thickness direction of the workpiece. The temperature distribution is asymmetric on the forward side and the return side, and the temperature on the return side is higher than that on the forward side. The flow field results show that the overall flow of the metal is vortex-like, and the velocity of the workpiece surface is greater than the internal velocity. When the rotation speed of the stirring head increases from 20π rad·s-1 to 40π rad·s-1, the flow tendency increases near the stirring head, especially near the upper surface of the workpiece.
Key words: 2219 aluminum alloy; friction stir welding; temperature field; flow field; numerical simulation
收稿日期: 2020-06-27
基金项目: 国家自然科学基金项目(52005276);山东省自然科学基金项目(ZR2020QE174);青岛科技大学科研启动基金项目(12030430010674).
作者简介: 郭怀志(1997—),男,硕士研究生.*通信联系人.