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ZHANG Jing, FENG Xiaosong, ZHANG Chengcong, HUANG Hui. Investigation on friction stir welding of Mg-Li Alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2017, 38(4): 119-123. DOI: 10.12073/j.hjxb.20170428
Citation: ZHANG Jing, FENG Xiaosong, ZHANG Chengcong, HUANG Hui. Investigation on friction stir welding of Mg-Li Alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2017, 38(4): 119-123. DOI: 10.12073/j.hjxb.20170428

Investigation on friction stir welding of Mg-Li Alloy

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  • Received Date: April 15, 2015
  • The friction stir welding of MBL10-200 Mg-Li alloy with a thickness of 3 mm was investigated. Concentrating on the process characteristics, the effects of friction tools, welding parameters on weld appearance, and mechanical properties of the joints were studied. The mechanism and solution of joint ductility loss were both investigated. The results show that with relatively wide process window (rotation speed 800~1 600 r/min, welding speed 200~500 mm/min), welds with good appearance can be obtained. Joints under most welding parameters fracture at base metal, and shows comparable strength with base metal. The joint elongation shows apparent decrease, 8%~57% of base metal under varied welding parameters. The non-uniform deformation of WNZ, TMAZ and base metal in the joint is the main reason of ductility loss. Annealing of the welded joints can effectively increase the elongation, nearly 96% of base metal.
  • Wu R Z, Deng Y S, Zhang M L. Microstructure and mechanical properties of Mg-5Li-3Al-2Zn-xRE alloys[J]. Journal of Materials Science, 2009, 44(15): 4132-4139.
    Haferkamp H, Niemeryer M, Boehem R, et al. Development, processing and application range of magnesium lithium alloys [J]. Material Science Forum, 2000, 350: 31-41.
    Aghion E, Bronfin B. Magnesium alloys development towards the 21st century [J]. Material Science Forum, 2006, 171(2): 188-204.
    Cao X, Jahazi M, Immarigeon J, et al. A review of laser welding techniques for magnesium alloys[J]. Journal of Materials Processing Technology, 2006, 58(8): 188-204.
    Su S, Huang J, Lin H. Electron-beam welding behavior in Mg-Al based alloys[J]. Metallurgical and Materials Transactions, 2002, 33(5): 1641-1673.
    Marya M, Edwards G L S. An investigation on the effects of gasses in GTA welding of a wrought AZ80 magnesium alloy[J]. Welding Journal, 2004, 83(7): 203-212.
    Asahing T, Tokisuje H, Katoh K. Solidification crack sensitivity of TIG welded AZ31 magnesium alloy[J]. Journal Japan Institute of Light Metals, 1999, 49(12): 595-599.
    Liu X H, Gu S H, Wu R Z,et al. Microstructure and mechanical properties of Mg-Li alloy after TIG welding [J]. Transactions of Nonferrous Metals Society of China, 2011(21): 477-481.
    邢 丽, 柯黎明, 孙德超, 等. 镁合金薄板的搅拌摩擦焊工艺[J]. 焊接学报, 2001, 22(6): 18-21. Xing Li, Ke Liming, Sun Dechao, et al. Friction stir welding of MB8 magnesium alloy sheet[J]. Transactions of the China Welding Institution, 2001, 22(6): 18-21.
    张 华, 林三宝, 吴 林, 等. AZ31镁合金搅拌摩擦焊接头力学性能[J]. 焊接学报, 2003, 24(5): 65-69. Zhang Hua, Lin Sanbao, Wu Lin, et al. Mechanical properties of friction stir welds on AZ31 magnesium alloy[J]. Transactions of the China Welding Institution, 2003, 24(5): 65-69.
    郭韋華, 王快社, 王 文, 等. 焊后热处理对镁合金搅拌摩擦焊接接头的影响[J]. 稀有金属材料与工程, 2011, 40(6): 1075-1078. Guo Wei, Wang Kuaishe, Wang Wen, et al. Influence of post-weld heat treatments on friction stir-welded AZ31B magnesium alloy joints[J]. Rare Metal Materials and Engineering, 2011, 40(6): 1075-1078.

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