Aspects concerning the microhardness evolution of aluminium ALSI7 welded by MIG and TIG welding technologies
Mihai BOCA, Gheorghe NAGÎȚ, Traian MIHORDEA, Tzvetelin GUEORGUIEV, Fabian LUPU
Abstract. In all welded assemblies, the joining area must meet the mechanical and functional requirements imposed on the assembly. High importance is placed on the hardness profile across the weld cross-section to determine the mechanical properties of the welded assembly. This study highlights the variation in hardness measured along the cross-section of a welded area in TIG- and MIG-welded AlSi7 joints. The results reveal aspects of grain orientation and suggest that the material may crack outside the weld zone.
Keywords
Heat-Affected Zone, Fusion Welding, Butt Joint Welding, Hardness Evaluation, Hardness Characteristics
Published online 1/20/2026, 9 pages
Copyright © 2026 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Mihai BOCA, Gheorghe NAGÎȚ, Traian MIHORDEA, Tzvetelin GUEORGUIEV, Fabian LUPU, Aspects concerning the microhardness evolution of aluminium ALSI7 welded by MIG and TIG welding technologies, Materials Research Proceedings, Vol. 61, pp 28-36, 2026
DOI: https://doi.org/10.21741/9781644903995-4
The article was published as article 4 of the book Innovative Manufacturing Engineering and Energy
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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