Advanced Technologies and Materials

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Vol. 44 No. 2 (2019)
Original articles

Distinctiveness of Welding Joints Design Based on Mechanical and Corrosion Environmental Influence on Low Carbon Steel

Isiaka O. Oladele
Department of Metallurgical and Materials Engineering, Federal University of Technology, Akure, Nigeria
Davies B. Alonge
Technische Universität Darmstadt, Germany
Timothy O. Betiku
Université Grenoble Alpes, PHELMA, Grenoble Institute of Engineering, France
Abel A. Barnabas
Department of Metallurgical and Materials Engineering, Federal University of Technology, Akure, Nigeria
S. A. Shittu
Department of Metallurgical and Materials Engineering, Federal University of Technology, Akure, Nigeria

Published 2023-09-30

abstract views: 24 // Full text article (PDF): 17


Keywords

  • low carbon steel,
  • optimum welding parameters,
  • weld joint design,
  • post weld heat treatment

How to Cite

O. Oladele, I., B. Alonge, D., O. Betiku, T., A. Barnabas, A., & A. Shittu, S. (2023). Distinctiveness of Welding Joints Design Based on Mechanical and Corrosion Environmental Influence on Low Carbon Steel. Advanced Technologies and Materials, 44(2), 13–19. https://doi.org/10.24867/ATM-2019-2-003

Abstract

Experimental investigations were carried out to study the effect of weld joint designs and post weld heat treatment (PWHT) on mechanical and corrosion properties of low carbon steel. Butt, bevel and half-lap joints were produced with a voltage of 20 V and current of 110 A with the use of 3.2 mm diameter electrode E6013. Full annealing was carried out on part of the welded samples in order to consider the possibility of post weld heat treatment for better performance. The mechanical properties (tensile, hardness, and impact toughness) were studied for both the as welded (AW) and PWHT samples as well as the corrosion performance in a natural sea water environment containing 3.5 wt.% NaCl using potentiodynamic polarization method. The microstructure of the AW and PWHT samples of the welded joints with the most promising mechanical and corrosion properties were then characterized by means of an optical microscopy. The results obtained reveals that the bevel joint followed by half lap joint and the butt joint of the as weld samples gave the best combination of the mechanical properties considered. On the other hand, the corrosion properties of the butt joint were superior to that of the bevel and half lap joint, respectively in the PWHT condition as compared to the AW samples. This implies that PWHT improves the corrosion resistance of the welded steel joints.

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