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<p>The properties of TC1 / 1060 / 6061 Ti/Al explosive composite tungsten argon arc welding dissimilar welded joints were analyzed by means of SEM, EBSD, XRD and EDS. The results show that the microstructure of the weld changes from coarse β grains to lamellar martensitic α' phases. There is an appropriate amount of mutual diffusion of titanium/aluminum atoms at the welding, indicating that there is a strong interatomic bonding force in the weld. There are no titanium and aluminum intermetallic compounds produced in welds, but exists Al/Fe and Al/Mg compounds, indicating that the bonding quality of the weld is lower than untreated. The weld may become a point of stress concentration in the joint which affects the bearing capacity of joint. The composite welding specimens have strong tensile properties and poor shear properties.</p>

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Study on Weld Microstructure and Interface of Explosive Composite Titanium/Aluminum Composite Plate Based on Composite Welding

  • 期刊论文

  • 发表日期：

    2026年1月3日

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  • Linyue Bai,
  • Fei Shao,
  • Xingkun Xie,
  • Lei Gao,
  • Lixiang He,
  • Yunqiang Zhang,
  • Qingxian Hu

摘要

The properties of TC1 / 1060 / 6061 Ti/Al explosive composite tungsten argon arc welding dissimilar welded joints were analyzed by means of SEM, EBSD, XRD and EDS. The results show that the microstructure of the weld changes from coarse β grains to lamellar martensitic α' phases. There is an appropriate amount of mutual diffusion of titanium/aluminum atoms at the welding, indicating that there is a strong interatomic bonding force in the weld. There are no titanium and aluminum intermetallic compounds produced in welds, but exists Al/Fe and Al/Mg compounds, indicating that the bonding quality of the weld is lower than untreated. The weld may become a point of stress concentration in the joint which affects the bearing capacity of joint. The composite welding specimens have strong tensile properties and poor shear properties.