Comparison of welds made with a laser welding machine under different shielding gases
aedvard.bjelajac@messergroup.com
b0000-0002-1866-8266- c0000-0002-3276-8431
- d0000-0002-6130-0328
- e0000-0002-9757-5710
- Article Type: Original scientific paper
- Language: English/Serbian
- Received: July 2026
- Accepted: August 2026
Abstract
Welding of S235 pickled structural steel sheets was performed in a Trumpf TruLaser 5000 laser cell to determine the effect of the protective atmosphere on welding parameters, microstructure, and mechanical properties of the welded joint. Three series of samples were welded. The first two were produced in a protective atmosphere of argon and nitrogen. The third series of samples was processed without shielding gas. Metallographic cross-sections were prepared, the microstructure was examined, geometry of welded joints was analyzed, tensile tests and hardness measurements were done.
Keywords
laser welding, shielding gases, tensile properties, hardness
Acknowledgements
The paper was published in its original form in the Proceedings of the 1st Conference with international participation "Technology of Joining Materials" held in Bečići, Montenegro from May 14 to 16, 2026.
References
Under construction
Open Access and Licensing
This article is published under the Creative Commons Attribution ShareAlike 4.0 International license (CC BY-SA 4.0). The authors retain copyright and grant the journal the non-exclusive right to publish, distribute, archive and identify the article as the original published version.