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Role of Welding Parameters Using the Flux Cored Arc Welding Process of Low Alloy Steels on Bead Geometry and Mechanical Properties

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Abstract

Welding parameters have direct effects on the bead geometry, microstructure, and mechanical properties of low alloy steels. A series of experiments have been carried out to examine some of these parameters using the flux cored arc welding process (FCAW). In this article, an experimental study was conducted to investigate the influence of welding parameters in FCAW process particularly welding voltage and travel speed on weld bead dimensions. The study also includes the effects of bead overlap and deposition sequence on the parent material and the heat-affected zone (HAZ) properties. It was found that an increase in the welding voltage leads to an increase in the weld bead width, and the increase in the welding traverse speed leads to a decrease in the weld bead width. When studying the bead overlap percentages, it was found that the 50% bead overlap can be considered to be practically a better option than the higher percentages of bead overlap (i.e., 70-90%). The experimental investigation of studying the deposition sequence showed that there were no significant differences in the microstructure, hardness, and the size of the refined HAZ between the two proposed deposition sequences. However, a significant improvement in the microstructure and the size of the refined HAZ, and a reduction in the hardness were achieved after depositing the second welding bead, irrespective of the depositing sequence.

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Authors and Affiliations

  1. Mechanical Production Engineering Department, College of Technological Studies, PAAET, Kuwait City, Kuwait

    A. Aloraier & A. Almazrouee

  2. Mechanical Engineering Department, Taibah University, Taibah, Kingdom of Saudi Arabia

    T. Shehata

  3. Mechanical Engineering Department, Monash University, Clayton, VIC, 3800, Australia

    John W. H. Price

Authors
  1. A. Aloraier
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  2. A. Almazrouee
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  3. T. Shehata
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  4. John W. H. Price
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Correspondence to A. Aloraier.

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Aloraier, A., Almazrouee, A., Shehata, T. et al. Role of Welding Parameters Using the Flux Cored Arc Welding Process of Low Alloy Steels on Bead Geometry and Mechanical Properties. J. of Materi Eng and Perform 21, 540–547 (2012). https://doi.org/10.1007/s11665-011-9948-6

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  • DOI: https://doi.org/10.1007/s11665-011-9948-6

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