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Fiber laser induced surface modification/manipulation of an ultrasonically consolidated metal matrix
Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, Loughborough, United Kingdom.
Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, Loughborough, United Kingdom.ORCID iD: 0000-0002-0480-4079
Fraunhofer Institute for Laser Technology, Aachen, Germany.
Fraunhofer Institute for Laser Technology, Aachen, Germany.
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2013 (English)In: Journal of Materials Processing Technology, ISSN 0924-0136, E-ISSN 1873-4774, Vol. 213, no 10, p. 1792-1800Article in journal (Refereed) Published
Abstract [en]

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. © 2013 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
Amsterdam: Elsevier, 2013. Vol. 213, no 10, p. 1792-1800
Keywords [en]
Ultrasonic Consolidation, Fiber laser, Melt ejection, Aluminium, Additive manufacturing, Assist gas
National Category
Manufacturing, Surface and Joining Technology
Identifiers
URN: urn:nbn:se:hh:diva-37856DOI: 10.1016/j.jmatprotec.2013.04.008ISI: 000321482700015Scopus ID: 2-s2.0-84878627656OAI: oai:DiVA.org:hh-37856DiVA, id: diva2:1247210
Note

Funding: EPSRC/IMCRC (grant number EPSRC IMCRC 275)

Available from: 2018-09-11 Created: 2018-09-11 Last updated: 2018-09-14Bibliographically approved

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Friel, R. J.

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