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<p>This work focuses on the metallurgical characterization of welded joints of 1.5&#xa0;mm thick ferritic stainless steel 409 with Ti nanoparticles electrodeposited on the welding area made with the hybridization of gas tungsten and gas metal arc welding processes. The hybrid welding process was compared with conventional gas metal arc welding using a heat input of ~ 0.5&#xa0;kJ/mm. Microstructural characterization was made in the optical, atomic force microscope, and scanning electron microscopy. Mechanical properties were evaluated with tensile tests and microhardness profiles. Tension tests showed greater elongation in specimens with Ti nanoparticles (~ 39%), this correlates with microhardness profile with higher values in weld metal of joint made with the hybrid process (~ 300HV<sub>0.2</sub>), this suggests that an improvement of welded joint can be achieve with the hybrid process as Ti nanoparticles act as carbide stabilizers and inoculant in weld pool.</p> Graphical abstract <p></p>

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Characterization of GTAW-GMAW hybrid welding of ferritic stainless steel with addition of titanium nanoparticles

  • 期刊论文

  • 发表日期：

    2025年5月22日

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  • Edgar Anuar Cabrera Ontiveros,
  • Sergio García Villarreal,
  • Ventura Lilia Cruz-Hernández,
  • Lázaro Abdiel Falcón Franco,
  • Miguel Esneider,
  • Víctor Hugo Martínez Landeros,
  • Marco Arturo García-Rentería

摘要

This work focuses on the metallurgical characterization of welded joints of 1.5 mm thick ferritic stainless steel 409 with Ti nanoparticles electrodeposited on the welding area made with the hybridization of gas tungsten and gas metal arc welding processes. The hybrid welding process was compared with conventional gas metal arc welding using a heat input of ~ 0.5 kJ/mm. Microstructural characterization was made in the optical, atomic force microscope, and scanning electron microscopy. Mechanical properties were evaluated with tensile tests and microhardness profiles. Tension tests showed greater elongation in specimens with Ti nanoparticles (~ 39%), this correlates with microhardness profile with higher values in weld metal of joint made with the hybrid process (~ 300HV0.2), this suggests that an improvement of welded joint can be achieve with the hybrid process as Ti nanoparticles act as carbide stabilizers and inoculant in weld pool.

Graphical abstract