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Title: | Laser-machined microchannel effect on microstructure and oxide formation of an ultrasonically processed aluminum alloy |
Authors: | Masurtschak, Simona Friel, Ross J. Gillner, Arnold Ryll, J. Harris, Russell A. |
Keywords: | Consolidated metal-matrix Corrosion behavior Pulsed-laser Al-alloy Solidification Welds |
Issue Date: | 2015 |
Publisher: | ASME |
Citation: | MASURTSCHAK, S. ... et al, 2015. Laser-Machined Microchannel Effect on Microstructure and Oxide Formation of an Ultrasonically Processed Aluminum Alloy. Journal of Engineering Materials and Technology, 137 (1), article 011006, 11pp. |
Abstract: | Ultrasonic consolidation (UC) has been proven to be a suitable method for fiber embedment
into metal matrices. To aid successful embedment of high fiber volumes and to
ensure their accurate positioning, research on producing microchannels in combination
with adjacent shoulders formed by distribution of the melt onto unique UC sample surfaces
with a fiber laser was carried out. This paper investigated the effect of the laser on
the microstructure surrounding the channel within an Al 3003-H18 sample. The heat
input and the extent of the heat-affected zone (HAZ) from one and multiple passes was
examined. The paper explored the influence of air, as an assist gas, on the shoulders and
possible oxide formation with regards to future bonding requirements during UC. The
authors found that one laser pass resulted in a keyhole-shaped channel filled with a mixture
of aluminum and oxides and a symmetrical HAZ surrounding the channel. Multiple
passes resulted in the desired channel shape and a wide HAZ which appeared to be an
eutectic microstructure. The distribution of molten material showed oxide formation all
along the channel outline and especially within the shoulder. |
Description: | This paper is closed access. |
Version: | Closed access |
DOI: | 10.1115/1.4028926 |
URI: | https://dspace.lboro.ac.uk/2134/16882 |
Publisher Link: | http://dx.doi.org/10.1115/1.4028926 |
ISSN: | 0094-4289 |
Appears in Collections: | Closed Access (Mechanical, Electrical and Manufacturing Engineering)
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