Reference : Metallographic Studies of Dissimilar Al-Cu Laser-Welded Joints Using Various Etchants
Scientific journals : Article
Engineering, computing & technology : Materials science & engineering
Engineering, computing & technology : Mechanical engineering
Physics and Materials Science
http://hdl.handle.net/10993/42616
Metallographic Studies of Dissimilar Al-Cu Laser-Welded Joints Using Various Etchants
English
Schmalen, Pascal Guy [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Mathivanan, Karthik [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 >]
15-Nov-2018
Metallography, Microstructure, and Analysis
Springer
Yes (verified by ORBilu)
International
2192-9262
2192-9270
New York
NY
[en] Laser welding ; Aluminum Copper Intermetallic compounds ; Optical microscopy ; Etching routines
[en] The welding of Al and Cu is considered as difficult due to the formation of intermetallic compounds, which cause a brittle joint with increased electrical resistance. This paper investigates etching techniques that were used to contrast the intermetallic compounds for optical microscope analysis. A 0.5 mm AA-1050 sheet was welded to a 0.5 mm SF-Cu sheet in overlap configuration. The cross sections were etched by using 17 different reagents, including common Al-grade 2xxx etchants, Al-bronze etchants, and specific IMC etchants. A complete microstructural characterization, including the formation of intermetallic compounds, is presented. The experimental result showed that a clear distinction of metallurgic structures is possible, thus enabling a more detailed analysis of Al-Cu welds. It was found that etchants #09, #14, and #16 revealed best the four different intermetallic compounds θ-Al2Cu, η-AlCu, ζ-Al3Cu4, and γ-Al4Cu9.
http://hdl.handle.net/10993/42616
10.1007/s13632-018-0501-y
FnR ; FNR10155468 > Pascal Guy Schmalen > > Closed-loop control of the laser-braze welding process of dissimilar materials > 01/09/2015 > 14/03/2019 > 2015

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