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<p>The single-stage light gas gun has been employed to drive the T2 copper welding on Q235 carbon steel. The effect of the Zn interlayer on the microstructure at the interface of impact welded the T2 copper/Q235 carbon steel composite has been studied by both experiment and numerical simulation. The simulation results are mainly consistent with the results of the experiment. The 100&#xa0;µm Zn interlayer can broaden the lower limit of the T2/Q235 weld window, resulting in a 3.11% reduction in energy dissipation during the impact welding. While the 25&#xa0;µm Zn interlayer achieves a reduction of up to 11.6%. As the thickness of the Zn interlayer diminishes, the plastic strain, pressure, and temperature of the flyer plate gradually increase, allowing for the modulation of welding parameters through varying Zn interlayer thicknesses.</p>

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Experimental and numerical simulation study on T2/Q235 composite impact welded with various thickness of Zn interlayer

  • 期刊论文

  • 发表日期：

    2025年4月22日

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  • Xingxing Cheng,
  • Bing Xue,
  • Jiangliang Li,
  • Moujin Lin,
  • Junqi Zhou,
  • Lu Zhang,
  • Jichun Wang,
  • Pengfei Gao

摘要

The single-stage light gas gun has been employed to drive the T2 copper welding on Q235 carbon steel. The effect of the Zn interlayer on the microstructure at the interface of impact welded the T2 copper/Q235 carbon steel composite has been studied by both experiment and numerical simulation. The simulation results are mainly consistent with the results of the experiment. The 100 µm Zn interlayer can broaden the lower limit of the T2/Q235 weld window, resulting in a 3.11% reduction in energy dissipation during the impact welding. While the 25 µm Zn interlayer achieves a reduction of up to 11.6%. As the thickness of the Zn interlayer diminishes, the plastic strain, pressure, and temperature of the flyer plate gradually increase, allowing for the modulation of welding parameters through varying Zn interlayer thicknesses.