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Welding assembly of thin plates of 7075 T6 aluminium alloy

Auteurs : Belgacem Leila, Kaba Liamine, BENSAID Nabil, BOUTAGHANE Amar
Année : 2016
Domaine : Sciences des matériaux
Type : Communication
Conférence: 5th International Conference on Welding, Non Destructive Testing and Materials and Alloys Industry IC-WNDT-MI’16
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Mots clés : welding, TIG, aluminium alloy, mechanical properties

Résumé :

Assembly by welding of aluminum alloys, especially of structural hardening, is one of the major challenges of designers and manufacturers demanding a structural alleviation. In this work, an experimental analysis of the mechanical behavior and microstructural evolution of thin plates in aluminum alloys 7075 T6 welded by the conventional method TIG. A notable microstructural change occurred in our materials by the thermal effect, resulting in heterogeneous mechanical properties. Break is privileged in the connecting region, which is characterized by a columnar structure, contributing to reduce the ability of the material to deforme plastically.