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<p>The effects of the application of electromagnetic fields (EMF) of low intensity (3 mT) during welding AL6XN-Inconel 600 (IN600) plates were investigated in terms of the microstructure and mechanical properties. The plates, 6.35&#xa0;mm in thickness, were gas metal arc welded (GMAW) in a single pass using ERNiCrMo-3 and ER310 filler wires. The welding parameters were adjusted to heat inputs of ~ 1.2&#xa0;kJ/mm. The application of the EMFs had no significant effect on the dilution of the base materials, but the microstructural characterization of the welds revealed a remarkable grain refining effect in the weld metal (WM). The non-mixing zone at the interface between the WM and the AL6XN was significantly reduced for both electrodes applying EMFs. The highest energy absorbed in the Charpy impact tests was for the specimens welded with ER310. A positive effect was seen in this property for welds performed with EMFs. Failure of the welded joints during tension tests occurred at the WM when using ER310 whereas for ERNiCrMo-3 the specimens broke at the HAZ of IN600. The failures zones correlated well with microhardness maps. The dissimilar welds joined with ERNiCrMo-3 in conjunction with the simultaneous application of the EMF exhibited the best mechanical properties.</p>

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The Influence of the Application of Electromagnetic Fields of Low Intensity during Gas Metal Arc Welding of AL6XN-Inconel 600 Dissimilar Welds

  • 期刊论文

  • 发表日期：

    2026年3月2日

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  • R. Cortés-Rodríguez,
  • F. Paz-Zavala,
  • V. H. López-Morelos,
  • M. Salazar-Martínez,
  • F. F. Curiel-López,
  • A. Ruiz

摘要

The effects of the application of electromagnetic fields (EMF) of low intensity (3 mT) during welding AL6XN-Inconel 600 (IN600) plates were investigated in terms of the microstructure and mechanical properties. The plates, 6.35 mm in thickness, were gas metal arc welded (GMAW) in a single pass using ERNiCrMo-3 and ER310 filler wires. The welding parameters were adjusted to heat inputs of ~ 1.2 kJ/mm. The application of the EMFs had no significant effect on the dilution of the base materials, but the microstructural characterization of the welds revealed a remarkable grain refining effect in the weld metal (WM). The non-mixing zone at the interface between the WM and the AL6XN was significantly reduced for both electrodes applying EMFs. The highest energy absorbed in the Charpy impact tests was for the specimens welded with ER310. A positive effect was seen in this property for welds performed with EMFs. Failure of the welded joints during tension tests occurred at the WM when using ER310 whereas for ERNiCrMo-3 the specimens broke at the HAZ of IN600. The failures zones correlated well with microhardness maps. The dissimilar welds joined with ERNiCrMo-3 in conjunction with the simultaneous application of the EMF exhibited the best mechanical properties.