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Published in: Lasers in Manufacturing and Materials Processing 1/2017

09-12-2016

Laser Deep Penetration Welding of an Aluminum Alloy with Simultaneously Applied Vibrations

Authors: Peer Woizeschke, Tim Radel, Paul Nicolay, Frank Vollertsen

Published in: Lasers in Manufacturing and Materials Processing | Issue 1/2017

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Abstract

In aluminum welding, the grain structure of produced seams is an essential factor with respect to the seam properties. In the casting technology the effect of mechanical vibrations on the grain growth during the solidification of liquid metals is known as a refinement method. In this paper, the transferability of this approach from comparatively long-time processes in the field of casting to the short-time process of laser deep penetration welding is investigated. Therefore, specimens were sinusoidal vibrated with frequencies up to 4 kHz during bead-on-plate full-penetration welding experiments. The resulting grain size was determined by applying the circular intercept procedure on the center of a cross-section micrograph of each weld. The results show that grain refinement is in general achievable by mechanical vibrations in the audible frequency range during laser full penetration keyhole welding of the aluminum alloy EN AW-5083.

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Metadata
Title
Laser Deep Penetration Welding of an Aluminum Alloy with Simultaneously Applied Vibrations
Authors
Peer Woizeschke
Tim Radel
Paul Nicolay
Frank Vollertsen
Publication date
09-12-2016
Publisher
Springer US
Published in
Lasers in Manufacturing and Materials Processing / Issue 1/2017
Print ISSN: 2196-7229
Electronic ISSN: 2196-7237
DOI
https://doi.org/10.1007/s40516-016-0032-9

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