Texture evolution in Nd:YAG-laser welds of AZ31 magnesium alloy hot rolled sheets and its influence on mechanical properties

Loreleï Commin (1) , Myriam Dumont (2) , René Rotinat (3) , Fabrice Pierron (4) , Jean-Eric Masse (3) , Laurent Barrallier (3)

1 KIT - Karlsruhe Institute of Technology
2 IM2NP - Institut des Matériaux, de Microélectronique et des Nanosciences de Provence
3 MSMP - Mechanics surfaces and materials processing
4 University of Southampton

AZ31 hot rolled magnesium alloy presents a strong basal texture. Using laser beam welding (LBW) as a joining process induces high temperature gradients leading to major texture changes. EBSD was used to study the texture evolution, and tensile tests coupled with speckle interferometry were performed to understand its influence on mechanical properties. The random texture obtained in the LBW fusion zone is mainly responsible for the yield strength reduction.

Mots clés: Laser welding; Magnesium alloys; XRD; EBSD; Mechanical properties

Domaines: Matériaux

Loreleï Commin, Myriam Dumont, René Rotinat, Fabrice Pierron, Jean-Eric Masse, et al.. Texture evolution in Nd:YAG-laser welds of AZ31 magnesium alloy hot rolled sheets and its influence on mechanical properties. Materials Science and Engineering: A, 2011, 528 (4-5), pp.2049-2055. ⟨10.1016/j.msea.2010.11.061⟩. ⟨hal-01059768⟩