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This study presents a comprehensive experimental and metallurgical investigation into the effects of multiple repair welding cycles on the structural integrity of ST44 carbon steel butt joints, a material widely used in shipbuilding. Two industrially significant welding processes Shielded Metal Arc Welding (SMAW) and Flux-Cored Arc Welding (FCAW) were employed to evaluate how repeated welding, gouging, and re-welding influence the mechanical performance and microstructural evolution of welded joints. Single V-groove butt joints with a total bevel angle of 60° were prepared, and specimens underwent one to four full repair cycles to simulate realistic industrial repair conditions. Mechanical characterization included tensile testing, Charpy V-notch impact testing, and hardness profiling across the weld metal, heat-affected zone (HAZ), and base material.
@article{82b46c6a-79f4-4c1b-97a9-01bea3419185,
title={Effects of multiple repair welding cycles on the microstructural evolution and mechanical integrity of shipbuilding steel joints},
author={Ahmed Fathy Shaban and Emad El-Kashif},
year={2026},
language={en}
}TY - JOUR TI - Effects of multiple repair welding cycles on the microstructural evolution and mechanical integrity of shipbuilding steel joints AU - Ahmed Fathy Shaban AU - Emad El-Kashif PY - 2026 LA - en ER -
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