锻压技术

基于跑道线圈的板料磁脉冲焊接数值模拟与实验研究

英文标题：Numerical simulation and experimental study on magnetic pulse welding for sheet metal based on runway coil

单位：(华中科技大学材料科学与工程学院材料成形与模具技术全国重点实验室湖北武汉 430074)

分类号：TG391

出版年,卷(期):页码：2024,49(2):53-61

摘要：

提出了一种基于跑道线圈的板料磁脉冲焊接新方法。通过数值模拟、焊接实验以及测试分析，研究了放电电压、垫片间距以及飞板壁厚对板材焊接变形及温升的影响规律，阐明了焊接界面缺陷产生的原因，揭示了AlAl接头的失效机制。结果表明：焊接碰撞速度随着放电电压及垫片间距的增加而增大，而随飞板壁厚的增加而减小；垫片间距的减小及飞板壁厚的增加会改善焊接碰撞角度；飞板厚向温度分布方式与电流流向有关，跑道线圈弯道段感应涡流的密度高于直道段；焊接接头界面中的微孔隙是由于局部金属“快熔快凝”导致的，而间隙熔融物是射流产生的高温“粒子团”卷入界面中凝固后形成的；AlAl焊接试样在剪切强度达到24 MPa时发生剪切分离，这种失效方式由线形焊缝伴随微孔隙共同造成。

A new method for sheet metal magnetic pulse welding based on runway coil was proposed. Then, the influence laws of discharge voltage, gasket spacing and flyer sheet wall thickness on the welding deformation and temperature rise of sheet were studied through numerical simulation, welding experiments and test analysis. Furthermore, the causes of welding interface defects were clarified, and the failure mechanism of Al-Al joints was revealed. The results show that the welding collision speed increases with the

increasing of discharge voltage and gasket spacing, but decreases with the increasing of flyer sheet wall thickness. The reduction of gasket spacing and the increase of flyer sheet wall thickness can improve the welding collision angle. The temperature distribution pattern of flyer sheet in the thickness direction is related to the current flow direction, and the density of induced eddy current in the curved section of runway coil is higher than that in the straight section. The micropores in the welded joint interface are caused by the “fast melting and fast solidification” of local metal, while the interstitial melt is formed by the high-temperature “particle clusters” generated by the jet flow and involved in the interface and solidified. The Al-Al welding sample undergoes the shear separation when the shear strength reaches 24 MPa, and this failure mode is caused by linear welds accompanied by micropores.

基金项目：

国家自然科学基金面上项目(51975229)；湖北省重点研发计划项目（2020BAB139）；武汉市应用基础前沿项目（2020010601012178）

唐天宇（1999-），男，硕士研究生

参考文献：

［1］雷乐，赵伦，高山凤，等.铝钛异种薄板冷连接工艺及力学性能研究
［J］.锻压技术，2023，48(7)：100-106.

Lei L, Zhao L, Gao S F, et al. Cold joining process and mechanical property study for AlTi dissimilar plates
［J］. Forging & Stamping Technology, 2023, 48(7): 100-106.

［2］张鹏，赵升吨，张佳莹，等.摩擦铆压用交流伺服塑性连接设备结构可靠性研究
［J］.锻压技术，2022，47(2)：145-151.

Zhang P, Zhao S D, Zhang J Y, et al. Research on structural reliability for AC servo plastic connection equipment used in frictionassisted clinching
［J］. Forging & Stamping Technology, 2022, 47(2): 145-151.

［3］徐毅珂,黄亮,王泽宇，等.2219铝合金动态压缩下应变率敏感性行为
［J］.稀有金属材料与工程，2022，51(8)：2963-2970.

Xu Y K, Huang L, Wang Z Y, et al. Strain rate sensitivity behavior of 2219 aluminum alloy under dynamic compression
［J］. Rare Metal Materials and Engineering, 2022, 51(8): 2963-2970.

［4］陈树君,夏羽,于洋，等.铝-镁合金磁脉冲焊接界面形貌研究
［J］.稀有金属材料与工程，2012，41(2)：352-355.

Chen S J, Xia Y, Yu Y, et al. Morphology study of AlMg alloy magnetic pulse welding interface
［J］. Rare Metal Materials and Engineering, 2012, 41(2): 352-355.

［5］Shanthala K, Sreenivasa T N. Review on electromagnetic welding of dissimilar materials
［J］. Frontiers of Mechanical Engineering, 2016, 11: 363-373.

［6］Kapil A, Sharma A. Magnetic pulse welding: An efficient and environmentally friendly multimaterial joining technique
［J］. Journal of Cleaner Production,2015,100:35-58.

［7］Zhu C C, Liu Q X X, Wu Z G, et al. Interfacial microstructure characterization of aluminum/aluminumlithium joints fabricated by magnetic pulse welding
［J］. Materials Characterization, 2020, 167: 110530.

［8］Geng H H, Mao J Q, Zhang X, et al. Strain rate sensitivity of AlFe magnetic pulse welds
［J］. Journal of Materials Processing Technology, 2018, 262: 1-10.

［9］Wang C G, Liu Q X X, Li G Y, et al. Study on mechanical properties and microstructural feature of magnetic pulse welding joint between Cu and Al sheets
［J］. The International Journal of Advanced Manufacturing Technology, 2021, 113: 1739-1751.

［10］Li Z, Peng W X, Chen Y Z, et al. Simulation and experimental analysis of Al/Ti plate magnetic pulse welding based on multiseams coil
［J］. Journal of Manufacturing Processes, 2022, 83: 290-299.

［11］Yu H P, Xu Z D, Jiang H W, et al. Magnetic pulse joining of aluminum alloycarbon steel tubes
［J］. Transactions of Nonferrous Metals Society of China, 2012, 22:548-552.

［12］Kore S D, Date P P, Kulkarni S V. Electromagnetic impact welding of aluminum to stainless steel sheets
［J］. Journal of Materials Processing Technology, 2008, 208(1-3): 486-493.

［13］Cui J J, Sun T, Geng H H, et al. Effect of surface treatment on the mechanical properties and microstructures of AlFe singlelap joint by magnetic pulse welding
［J］. The International Journal of Advanced Manufacturing Technology, 2018, 98: 1081-1092.

［14］Zhang H, Liu N, Li X X, et al. Optimization design and experimental research of magnetic pulse welding system based on uniform pressure electromagnetic actuator
［J］. The International Journal of Advanced Manufacturing Technology, 2022, 121(11-12): 8447-8465.

［15］Xu J H, Huang L, Xu Y K, et al. Effect of pulsed electromagnetic field treatment on dislocation evolution and subsequent artificial aging behavior of 2195 AlLi alloy
［J］. Materials Characterization, 2022, 187: 111872.

［16］Xie B X, Huang L, Xu J H, et al. Microstructure evolution and strengthening mechanism of AlLi alloy during thermoelectromagnetic forming process
［J］. Journal of Materials Processing Technology, 2023, 315: 117922.

［17］Xie B X, Huang L, Wang Z Y, et al. Microstructural evolution and mechanical properties of 2219 aluminum alloy from different aging treatments to subsequent electromagnetic forming
［J］. Materials Characterization, 2021, 181: 111470.

［18］徐佳辉，黄亮，谢冰鑫，等.铝锂合金电磁形变复合热处理工艺研究
［J］.机械工程学报，2022，58(16)：58-67.

Xu J H, Huang L, Xie B X, et al. Study on electromagnetic deformation combined with heat treatment process of AlLi alloy
［J］. China Mechanical Engineering, 2022, 58(16): 58-67.

［19］Su H, Huang L, Li J, et al. Formability of AA 2219-O sheet under quasistatic, electromagnetic dynamic, and mechanical dynamic tensile loadings
［J］. Journal of Materials Science & Technology, 2021, 70: 125-135.

［20］唐天宇,黄亮,徐佳辉,等.跑道型线圈调控板料电磁成形磁场分布研究
［J/OL］.中国机械工程,1-11
［2024-02-03］.http:// kns.cnki.net/kcms/detail/42.1294.TH.20230907.1717. 010.html.

Tang T Y, Huang L, Xu J H, et al. Research on the magnetic field distribution of sheet metal electromagnetic forming controlled by runway coil
［J/OL］. China Mechanical Engineering,1-11
［2024-02-03］. http://kns.cnki.net/kcms/detail/42.1294.TH. 20230907.1717.010.html.

［21］耿辉辉. AlFe磁脉冲焊接及其接头失效机制研究
［D］.长沙：湖南大学，2019.

Geng H H. Magnetic Pulse Welding and Fracture Behavior of AlFe Joint
［D］. Changsha: Hunan University, 2019.

［22］Sharafiev S, Pabst C, Wagner M F X, et al. Microstructural characterisation of interfaces in magnetic pulse welded aluminum/aluminum joints
［A］.IOP Conference Series: Materials Science and Engineering
［C］. IOP Publishing, 2016, 118(1): 012016.

［23］Sapanathan T, Raoelison R N, Buiron N, et al. In situ metallic porous structure formation due to ultra high heating and cooling rates during an electromagnetic pulse welding
［J］. Scripta Materialia, 2017, 128: 10-13.

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