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.
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January 2015
Research-Article
Laser-Machined Microchannel Effect on Microstructure and Oxide Formation of an Ultrasonically Processed Aluminum Alloy
S. Masurtschak,
S. Masurtschak
1
Wolfson School of Mechanical
and Manufacturing Engineering,
and Manufacturing Engineering,
Loughborough University
,Loughborough, Leicestershire LE11 3TU
, UK
1Corresponding author.
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R. J. Friel,
R. J. Friel
Wolfson School of Mechanical
and Manufacturing Engineering,
and Manufacturing Engineering,
Loughborough University
,Loughborough, Leicestershire LE11 3TU
, UK
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A. Gillner,
A. Gillner
Fraunhofer Institute for Laser Technology
,Steinbachstrasse 15
,Aachen 52074
, Germany
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J. Ryll,
J. Ryll
Fraunhofer Institute for Laser Technology
,Steinbachstrasse 15
,Aachen 52074
, Germany
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R. A. Harris
R. A. Harris
Wolfson School of Mechanical
and Manufacturing Engineering,
and Manufacturing Engineering,
Loughborough University
,Loughborough, Leicestershire LE11 3TU
, UK
Search for other works by this author on:
S. Masurtschak
Wolfson School of Mechanical
and Manufacturing Engineering,
and Manufacturing Engineering,
Loughborough University
,Loughborough, Leicestershire LE11 3TU
, UK
R. J. Friel
Wolfson School of Mechanical
and Manufacturing Engineering,
and Manufacturing Engineering,
Loughborough University
,Loughborough, Leicestershire LE11 3TU
, UK
A. Gillner
Fraunhofer Institute for Laser Technology
,Steinbachstrasse 15
,Aachen 52074
, Germany
J. Ryll
Fraunhofer Institute for Laser Technology
,Steinbachstrasse 15
,Aachen 52074
, Germany
R. A. Harris
Wolfson School of Mechanical
and Manufacturing Engineering,
and Manufacturing Engineering,
Loughborough University
,Loughborough, Leicestershire LE11 3TU
, UK
1Corresponding author.
Contributed by the Materials Division of ASME for publication in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY. Manuscript received August 20, 2013; final manuscript received October 22, 2014; published online November 10, 2014. Assoc. Editor: Marwan K. Khraisheh.
J. Eng. Mater. Technol. Jan 2015, 137(1): 011006 (11 pages)
Published Online: January 1, 2015
Article history
Received:
August 20, 2013
Revision Received:
October 22, 2014
Online:
November 10, 2014
Citation
Masurtschak, S., Friel, R. J., Gillner, A., Ryll, J., and Harris, R. A. (January 1, 2015). "Laser-Machined Microchannel Effect on Microstructure and Oxide Formation of an Ultrasonically Processed Aluminum Alloy." ASME. J. Eng. Mater. Technol. January 2015; 137(1): 011006. https://doi.org/10.1115/1.4028926
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