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Erschienen in: Journal of Materials Engineering and Performance 6/2018

26.04.2018

Effect of Shielding Gas on the Properties of AW 5083 Aluminum Alloy Laser Weld Joints

verfasst von: Maroš Vyskoč, Miroslav Sahul, Martin Sahul

Erschienen in: Journal of Materials Engineering and Performance | Ausgabe 6/2018

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Abstract

The paper deals with the evaluation of the shielding gas influence on the properties of AW 5083 aluminum alloy weld joints produced with disk laser. Butt weld joints were produced under different shielding gas types, namely Ar, He, Ar + 5 vol.% He, Ar + 30 vol.% He and without shielding weld pool. Light and electron microscopy, computed tomography, microhardness measurements and tensile testing were used for evaluation of weld joint properties. He-shielded weld joints were the narrowest ones. On the other hand, Ar-shielded weld joints exhibited largest weld width. The choice of shielding gas had significant influence on the porosity level of welds. The lowest porosity was observed in weld joint produced in Ar with the addition of 5 vol.% He shielding atmosphere (only 0.03%), while the highest level of porosity was detected in weld joint produced in pure He (0.24%). Except unshielded aluminum alloy weld joint, the lowest tensile strength was recorded in He-shielded weld joints. On the contrary, the highest average microhardness was measured in He-shielded weld joints.
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Metadaten
Titel
Effect of Shielding Gas on the Properties of AW 5083 Aluminum Alloy Laser Weld Joints
verfasst von
Maroš Vyskoč
Miroslav Sahul
Martin Sahul
Publikationsdatum
26.04.2018
Verlag
Springer US
Erschienen in
Journal of Materials Engineering and Performance / Ausgabe 6/2018
Print ISSN: 1059-9495
Elektronische ISSN: 1544-1024
DOI
https://doi.org/10.1007/s11665-018-3383-x

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