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<p>This paper features a study of the effect of pulsed-arc GMA welding (welding with a consumable electrode in argon) with EP533 welding wire with transverse vibrations on the formation of the microstructure of the weld zone and the weld-affected zone of EP718 superalloy welded joints. Results of the optical microscopy, energy-dispersive X-ray spectroscopy, and electron back-scattered diffraction of EP718 superalloy welded joints, obtained by robotic GMA welding, confirmed the presence of the so-called microstructural heredity, caused by the edge preparation, on the microstructure of the weld zone during welding in energy-efficient regimes.</p>

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Influence of Microstructural Heredity on a Temperature Distribution and Formation of Two-Pass Welded Joints of EP718 Superalloy Obtained by Robotic GMA Welding

  • 期刊论文

  • 发表日期：

    2025年8月9日

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  • Roman Valentinovich Nikiforov,
  • Aleksandr Yurievich Medvedev,
  • Andrey Evgenievich Medvedev,
  • Marsel Fanirevich Imayev,
  • Dilara Byazitovna Kabirova,
  • Vitaliy Rustemovich Galimov,
  • Nafis Fanisovich Khayretdinov

摘要

This paper features a study of the effect of pulsed-arc GMA welding (welding with a consumable electrode in argon) with EP533 welding wire with transverse vibrations on the formation of the microstructure of the weld zone and the weld-affected zone of EP718 superalloy welded joints. Results of the optical microscopy, energy-dispersive X-ray spectroscopy, and electron back-scattered diffraction of EP718 superalloy welded joints, obtained by robotic GMA welding, confirmed the presence of the so-called microstructural heredity, caused by the edge preparation, on the microstructure of the weld zone during welding in energy-efficient regimes.