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<p>The purpose of this work is to study the effect of ultrasonic oscillations (USOs) introduced into the weld pool through a filler waveguide wire during the gas metal arc welding (GMAW) on the microstructural evolution and wear resistance of the deposited metal. Furthermore, the optimal area for introducing the waveguide wire into the weld pool was determined, which ensured its uniform melting in the weld pool and high-quality metal deposition.We determined that introducing USOs into the weld pool at a distance between the filler and electrode wires equal to 0.37–0.57 times the length of the weld pool leads to the fragmentation of large crystals of primary phases (carbides) in the structure of the deposited alloys. In the experimental alloy, the volume fraction of the austenitic matrix increased, accompanied by enhanced elemental partitioning between the austenite and carbide phases. This contributed to an 18% increase in the alloy's resistance to gas–abrasive wear at 600&#xa0;°C.</p>

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The Effect of Ultrasonic Oscillations on the Microstructure and Wear Resistance of Deposited Alloys in the GMAW Process

  • 期刊论文

  • 发表日期：

    2026年2月25日

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  • A. A. Artem’ev,
  • D. V. Priyatkin,
  • A. A. Antonov,
  • V. S. Zadorozhniy,
  • I. V. Zorin,
  • V. I. Lysak

摘要

The purpose of this work is to study the effect of ultrasonic oscillations (USOs) introduced into the weld pool through a filler waveguide wire during the gas metal arc welding (GMAW) on the microstructural evolution and wear resistance of the deposited metal. Furthermore, the optimal area for introducing the waveguide wire into the weld pool was determined, which ensured its uniform melting in the weld pool and high-quality metal deposition.We determined that introducing USOs into the weld pool at a distance between the filler and electrode wires equal to 0.37–0.57 times the length of the weld pool leads to the fragmentation of large crystals of primary phases (carbides) in the structure of the deposited alloys. In the experimental alloy, the volume fraction of the austenitic matrix increased, accompanied by enhanced elemental partitioning between the austenite and carbide phases. This contributed to an 18% increase in the alloy's resistance to gas–abrasive wear at 600 °C.