Abstract: In this work, the magnetic pulse welding was used to realize the joining between aluminum/magnesium dissimilar alloys sheets. The microstructure and mechanical properties of the joints obtained under different discharge energies were explored by optical microscope, scanning electron microscope, X-ray diffraction (XRD) and tensile test analysis methods. The results showed that the joint interface presents a waveform structure and straight structure. With the increase of discharge energy, the effective binding zone width of the interface increases gradually, reaching a maximum of 2.87 mm and the undulations at the waveform interface and the mechanical properties of the joints increased accordingly. The highest tensile shear load of the joints reached 4 679.5 N occur in discharge energy of 30 kJ, whose wave had wavelengths of 62.7 μm and amplitudes of 9.1 μm. The fracture morphology of the joints was analyzed and the results show that the weld joint was divided into two ellipse rings. Particles and a few voids were found in the inner ring, and the outer ring had streak structure. The high tensile shear load of the Al/Mg dissimilar joints was attributed to the formation of waveform structure interface which possess both mechanical interlocking and metallurgical bonding.
1 Lu Y W, Zhao Y D, Cui H B, et al. Hot Working Technology, 2021, 50(17), 27(in Chinese). 路尧文, 赵亚东, 崔红保, 等. 热加工工艺, 2021, 50(17), 27. 2 Ouyang J H, E Yarrapareddy, R Kovacevic. Jounral of Materials Processing Technology, 2011, 272(3), 110. 3 Liu J, Niu S, Ren R, et al. Acta Metallurgica Sinica, 2019, 32(11), 1385. 4 Yang C L. Numerial analysis of ultrasonic vibration enhanced friction stir welding of dissimilar Al/Mg alloys. Master's Thesis, University of Shang Dong, China, 2021(in Chinese). 杨春靓. 铝/镁异质合金超声振动辅助搅拌摩擦焊接过程的数值分析. 硕士学位论文, 山东大学, 2021. 5 Sharma A. Journal of Cleaner Prodution, 2015, 100, 35. 6 Zhu C C, Liu Q X X, Wu Z G, et al. Materials Characterization, 2020, 167, 110530. 7 Geng H H, Xia Z H, Zhang X, et al. Materials Characterization, 2018, 138, 229. 8 Geng H H, Mao J Q, Zhang X, et al. Materials Letters, 2019, 245, 151. 9 Wang S L, Wang X L, Sun T, et al. Journal of Materials Research and Technology, 2021, 10, 552. 10 Wang C G, Liu Q X X, Li G Y, et al. The International Journal of Advanced Manufacturing Technology, 2021, 113, 1739. 11 Zhang W, Xie J, Chen Y, et al. Scripta Materialia, 2022, 210, 114434. 12 Aizawa T, Kashani M, Okagawa K. Welding Journal, 2007, 86(5), 119. 13 Geng H H, Mao J Q, Zhang X, et al. Materials Letters, 2019, 245, 151. 14 Chen S J, Xia Y, Yu Y, et al. Rare Metal Materials and Engineering, 2012, 41(2), 352 (in Chinese). 陈树君, 夏羽, 于洋, 等. 稀有金属材料与工程, 2012, 41(2), 352. 15 Yu Y, Chen S J, Xia Y, et al. Rare Metal Materials and Engineering, 2012, 41(S2), 54. (in Chinese). 于洋, 陈树君, 夏羽, 等. 稀有金属材料与工程, 2012, 41(S2), 54. 16 Ben-Artzy A, Stern A, Frage N, et al. Science and Technology of Welding and Joining, 2008, 13(4), 402. 17 Kore S D, Imbert J, Worswick M J, et al. Science and Technology of Welding and Joining, 2009, 14(6), 549. 18 Göbel G, Kaspar J, Herrmannsdörfer T, et al. In:4th International Conference on High Speed Forming. Ohio, 2006, pp. 127. 19 Berlin A, Nguyen T C, Worswick M J, et al. Science and Technology of Welding and Joining, 2011, 16(8), 728. 20 Ben-Artzy A, Stern A, Frage N, et al. International Journal of Impact Engineering, 2010, 37(4), 397. 21 Zhu C, Xu S, Gao W, et al. Journal of Magnesium and Alloys, DOI:org/10. 1016/j. jma. 2021. 09. 004. 22 Shribman V, Tomer Y. Tube & Pipe Technology, 2006, 19(6), 91. 23 Zhu C C, Meng Y F, Liu Q X X, et al. Journal of Netshape Forming Engineering, 2021, 13(4), 45 (in Chinese). 朱聪聪, 蒙奕帆, 柳泉潇潇, 等. 精密成形工程, 2021, 13(4), 45.
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2023, Vol. 37 
