The advanced variant of gas metal arc welding (GMAW) known as cold metal transfer (CMT) developed by Fronius in Austria is used to overcome heat-input- and fusion-related issues such as porosity and cracking in welding of AA8011-H18 alloy sheets. AA8011-H18 alloy sheets 3 mm thick were welded using normal CMT-GMAW and pulsed CMT (PCMT)-GMAW processes. The microstructure of the weld metal and heat-affected zone was analyzed using an optical microscope. The tensile properties and hardness of joints were evaluated and compared. The results revealed that the PCMT-GMAW joints showed 26.45, 48.97 and 40.42% improvements in tensile strength, yield strength and elongation, respectively, compared with CMT-GMAW joints. The superior tensile performance of PCMT-GMAW joints compared with that of CMT-GMAW joints is due to the current pulsing effects along with the wire retraction mechanism, which aids in reducing the heat input and controlled droplet transfer.
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March 2024
Research Article|
December 30 2023
Investigation of the tensile strength of the CMT and PCMT joints of AA8011 aluminum alloy Available to Purchase
Rangasamy Sasidharan, PhD;
Rangasamy Sasidharan, PhD
Associate Professor
Department of Mechanical Engineering, Tagore Engineering College, Chennai, India
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Chinnasamy Rajendran, PhD;
Department of Mechanical Engineering, Sri Krishna College of Engineering and Technology, Coimbatore, India
(corresponding author: crdrn12@gmail.com)
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Tushar Sonar, PhD;
Tushar Sonar, PhD
Senior Research Scientist
Department of Welding Engineering, Institution of Engineering and Technology, South Ural State University (National Research University), Chelyabinsk, Russia
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Mikhail Ivanov, PhD
Mikhail Ivanov, PhD
Professor and Head
Department of Welding Engineering, Institution of Engineering and Technology, South Ural State University (National Research University), Chelyabinsk, Russia
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(corresponding author: crdrn12@gmail.com)
Publisher: Emerald Publishing
Received:
June 25 2023
Accepted:
November 10 2023
Online ISSN: 2046-0155
Print ISSN: 2046-0147
Emerald Publishing Limited: All rights reserved
2024
Emerging Materials Research (2024) 13 (1): 41–47.
Article history
Received:
June 25 2023
Accepted:
November 10 2023
Citation
Sasidharan R, Rajendran C, Sonar T, Ivanov M (2024), "Investigation of the tensile strength of the CMT and PCMT joints of AA8011 aluminum alloy". Emerging Materials Research, Vol. 13 No. 1 pp. 41–47, doi: https://doi.org/10.1680/jemmr.23.00102
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