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Laser-Assisted Surface Modification of 4340 Steel with Iron-Aluminum Alloys

Published online by Cambridge University Press:  11 February 2011

G. Muralidharan ,
P. G. Engleman ,
C. A. Blue ,
V. K. Sikka ,
A. K. Singh ,
A. Khangar  and
N. B. Dahotre
G. Muralidharan
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN-37831–6083.
P. G. Engleman
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN-37831–6083. Department of Materials Science and Engineering, Center for Laser Applications, University of Tennessee, Knoxville, TN 37932.
C. A. Blue
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN-37831–6083.
V. K. Sikka
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN-37831–6083.
A. K. Singh
Affiliation:
Department of Materials Science and Engineering, Center for Laser Applications, University of Tennessee, Knoxville, TN 37932.
A. Khangar
Affiliation:
Department of Materials Science and Engineering, Center for Laser Applications, University of Tennessee, Knoxville, TN 37932.
N. B. Dahotre
Affiliation:
Department of Materials Science and Engineering, Center for Laser Applications, University of Tennessee, Knoxville, TN 37932.
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Abstract

High power Nd-YAG laser was used to fuse coatings containing a mixture of FeAl and Al, with 4340 steel. It was observed that good quality coatings could be obtained using this process. Detailed microstructural studies show that Fe aluminides and/or a solid solution of Al in Fe can form within the coating, depending on the processing conditions. Wear measurements show that the best wear properties are obtained in the presence of an aluminide in the coating and that the wear properties significantly degrade when the coating consists primarily of a solid solution of Al in Fe.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 750: Symposium Y – Surface Engineering 2002–Synthesis, Characterization and Applications , 2002 , Y5.34
Copyright
Copyright © Materials Research Society 2003

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References

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