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Laser beam welding with high-frequency beam oscillation: Welding of dissimilar materials with brilliant fiber lasers

 
: Krätzsch, M.; Standfuß, J.; Klotzbach, A.; Kaspar, J.; Brenner, B.; Beyer, E.

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Postprint (1 MByte; PDF; )

Schmidt, M. ; Wissenschaftliche Gesellschaft Lasertechnik -WLT-:
Lasers in Manufacturing 2011, Sixth International WLT Conference on Lasers in Manufacturing. Proceedings : May 23-26, 2011, München; LiM 2011
Amsterdam: Elsevier, 2011 (Physics Procedia 12.2011, Pt.1)
ISSN: 1875-3892
S.142-149
International Conference on Lasers in Manufacturing (LIM) <6, 2011, München>
Englisch
Konferenzbeitrag, Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer IWS ()

Abstract
Brilliant laser beam sources in connection with a high frequent beam oscillation make it now possible to join metallic material combinations, which have been conventionally non-laser weldable up to now. It concerns especially such combinations like Al- Cu, where brittle intermetallic phases occur. Extreme small weld seam with high aspect ratio leads to very short meld pool life time. These allow an extensive reduction of the heat input. On the other side the melting behavior at metallic mixed joint, seam geometry, meld pool turbulence and solidification behavior can be influenced by a high frequent time-, position- and powercontrolled laser beam oscillation.

: http://publica.fraunhofer.de/dokumente/N-167862.html