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Laser Shot Peening of Inconel 600 and Surface Morphology Characterization

Published online by Cambridge University Press:  01 February 2011

A. A. Bugayev ,
M. C. Gupta ,
J. Orr ,
S. Levesque  and
R. Payne
A. A. Bugayev
Affiliation:
Applied Research Center, Old Dominion University, 12050 Jefferson Avenue, Newport News, Virginia 23606, U.S.A.
M. C. Gupta
Affiliation:
Applied Research Center, Old Dominion University, 12050 Jefferson Avenue, Newport News, Virginia 23606, U.S.A.
J. Orr
Affiliation:
Framatome ANP, Inc, Lynchburg, Virginia 24506, U.S.A.
S. Levesque
Affiliation:
Framatome ANP, Inc, Lynchburg, Virginia 24506, U.S.A.
R. Payne
Affiliation:
Framatome ANP, Inc, Lynchburg, Virginia 24506, U.S.A.
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Abstract

The results on laser shot peening and its characterization for Inconel 600 are presented. Using an X-ray diffraction technique we show that the residual compressive stresses can be successfully induced in Inconel 600 with parameters of laser peening, which are close to that of 316L stainless steel. The on-line monitoring system involving the acoustic pulse measurements is described for quality control of laser shot peening process. We found that sample scanning during laser processing results in a system of column-like microstructure, which is tilted in direction of scanning. The features of optical properties of tilted microstructure are described. We revealed that the base material injected into the confining water due to laser ablation is transformed to spherical nanoparticles with diameter of 60 nm.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 850: Symposium MM – Ultrafast Lasers for Materials Science , 2004 , MM2.4
Copyright
Copyright © Materials Research Society 2005

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References

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