[en] This paper presents the characterization of the intermetallic phases of laser-welded Al-Cu joints by synchrotron trough-the-substrate microdiffraction combined with SEM/EDX and etched/non-etched optical micrographs. Transmission microdiffraction offers the spatial resolution and beam flux necessary to study the intermetallic phases, which in conjunction with the excellent contrast of etched micrographs, rendered possible the phase identification. It was found that the major phases are Al2Cu (θ), Al4Cu9 (γ1) and AlCu (η2) were formed. The Al3Cu4 (ζ1) and δ phases where formed in less amount and found to be the primary cause for cracks inside the weld seam and therefore for the failure of the joint.
Disciplines :
Science des matériaux & ingénierie
Auteur, co-auteur :
SCHMALEN, Pascal Guy ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
PLAPPER, Peter ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
PERAL ALONSO, Inmaculada ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
TITOV, Ivan ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Vallcorba, Oriol; ALBA Synchrotron
Rius, Jordi; Institut de Ciencia de Materials de Barcelona
Co-auteurs externes :
yes
Langue du document :
Anglais
Titre :
Composition and phases in laser welded Al-Cu joints by synchrotron x-ray microdiffraction
Date de publication/diffusion :
septembre 2018
Titre du périodique :
Proceedings of 10th CIRP Conference on Photonic Technologies [LANE 2018]
Peer reviewed :
Peer reviewed
Projet FnR :
FNR10155468 - Closed-loop Control Of The Laser-braze Welding Process Of Dissimilar Materials, 2015 (01/09/2015-14/03/2019) - Pascal Guy Schmalen
