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Deformation and Fracture of Oxides Fabricated on 304L Stainless Steel via Pulsed Laser Irradiation

Published online by Cambridge University Press:  25 April 2012

Samantha K. Lawrence ,
Douglas D. Stauffer ,
Ryan C. Major ,
David P. Adams ,
William W. Gerberich ,
David F. Bahr  and
Neville R. Moody
Samantha K. Lawrence
Affiliation:
Mechanical and Materials Engineering, Washington State University, Pullman WA Sandia National Laboratories, Livermore, CA
Douglas D. Stauffer
Affiliation:
Hysitron Inc., Minneapolis, MN
Ryan C. Major
Affiliation:
Hysitron Inc., Minneapolis, MN
David P. Adams
Affiliation:
Sandia National Laboratories, Albuquerque, NM
William W. Gerberich
Affiliation:
Chemical and Materials Engineering, University of Minnesota, Minneapolis, MN
David F. Bahr
Affiliation:
Mechanical and Materials Engineering, Washington State University, Pullman WA
Neville R. Moody
Affiliation:
Sandia National Laboratories, Livermore, CA
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Abstract

Localized heating of metals and alloys using a focused laser beam in ambient atmosphere produces dielectric oxide layers that have characteristic optical appearances including different colors. Nanoindentation probed the deformation and fracture of laser-fabricated oxides on 304L stainless steel. Conductive nanoindentation measured electrical contact resistance (ECR) of the same colored oxides indicating a correlation between laser exposure, conductance during loading, current-voltage (I-V) behavior at constant load, and indentation response. Microscopy and X-ray diffraction examined the microstructure and chemical composition of the oxides. Combining techniques provides a unique approach for correlating mechanical behavior and the resulting performance of the films in conditions that cause wear.

Keywords

nano-indentationlaseroxide
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1424: Symposium SS – Properties and Processes at the Nanoscale Nanomechanics of Material Behavior , 2012 , mrsf11-1424-ss07-46
Copyright
Copyright © Materials Research Society 2012

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References

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