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Title: Fiber laser induced surface modification/manipulation of an ultrasonically consolidated metal matrix
Authors: Masurtschak, Simona
Friel, Ross J.
Gillner, Arnold
Ryll, J.
Harris, Russell A.
Keywords: Ultrasonic consolidation
Fiber laser
Melt ejection
Aluminium
Additive manufacturing
Assist gas
Issue Date: 2013
Publisher: © Elsevier
Citation: MASURTSCHAK, S. ... et al, 2013. Fiber laser induced surface modification/manipulation of an ultrasonically consolidated metal matrix. Journal of Materials Processing Technology, 213 (10), pp.1792-1800.
Abstract: Ultrasonic Consolidation (UC) is a manufacturing technique based on the ultrasonic joining of a sequence of metal foils. It has been shown to be a suitable method for fiber embedment into metal matrices. However, integration of high volume fractions of fibers requires a method for accurate positioning and secure placement to maintain fiber layouts within the matrices. This paper investigates the use of a fiber laser for microchannel creation in UC samples to allow such fiber layout patterns. A secondary goal, to possibly reduce plastic flow requirements in future embedding processes, is addressed by manipulating the melt generated by the laser to form a shoulder on either side of the channel. The authors studied the influence of laser power, traverse speed and assist gas pressure on the channel formation in aluminium alloy UC samples. It was found that multiple laser passes allowed accurate melt distribution and channel geometry in the micrometre range. An assist gas aided the manipulation of the melted material.
Description: This is the author’s version of a work that was accepted for publication in Journal of Materials Processing Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published at: http://dx.doi.org/10.1016/j.jmatprotec.2013.04.008
Sponsor: This work was supported by the EPSRC/IMCRC [grant number EPSRC IMCRC 275].
Version: Accepted version
DOI: 10.1016/j.jmatprotec.2013.04.008
URI: https://dspace.lboro.ac.uk/2134/16880
Publisher Link: http://dx.doi.org/10.1016/j.jmatprotec.2013.04.008
ISSN: 0924-0136
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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