Laser pulse heating (LPH) experiments were performed to provide insights into the thermomechanical damage effects that occur at the surface of coated and uncoated gun steel under cyclic, rapid heating and cooling. These effects include generation of a heat-affected zone (HAZ), severe plastic deformation, crack blunting, cavitation, fracture initiation, and generation of residual stresses. In addition, several of the deformation effects observed in the HAZ indicate superplasticity. The results are compared with data from surfaces exposed to several different firing conditions to provide a basis for analyzing the specific role of the various degradation mechanisms. Supporting information is provided from x-ray diffraction measurement of residual stresses in the steel heat-affected zones produced in a firing environment. The measured compressive stresses are explained using dilatometry data and are shown to be consistent with the observed damage processes.
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August 2003
Technical Papers
Application of Laser Pulse Heating to Simulate Thermomechanical Damage at Gun Bore Surfaces*
Paul J. Cote,
Paul J. Cote
US Army Armament Research, Development, and Engineering Center, Bene´t Laboratories, Watervliet, NY 12189
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Sabrina L. Lee,
Sabrina L. Lee
US Army Armament Research, Development, and Engineering Center, Bene´t Laboratories, Watervliet, NY 12189
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Mark E. Todaro,
Mark E. Todaro
US Army Armament Research, Development, and Engineering Center, Bene´t Laboratories, Watervliet, NY 12189
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Gay Kendall
Gay Kendall
US Army Armament Research, Development, and Engineering Center, Bene´t Laboratories, Watervliet, NY 12189
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Paul J. Cote
US Army Armament Research, Development, and Engineering Center, Bene´t Laboratories, Watervliet, NY 12189
Sabrina L. Lee
US Army Armament Research, Development, and Engineering Center, Bene´t Laboratories, Watervliet, NY 12189
Mark E. Todaro
US Army Armament Research, Development, and Engineering Center, Bene´t Laboratories, Watervliet, NY 12189
Gay Kendall
US Army Armament Research, Development, and Engineering Center, Bene´t Laboratories, Watervliet, NY 12189
Contributed by the Pressure Vessels and Piping Division for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received by the PVP Division March 12, 2003; revision received April 23, 2003. Associate Editor: M Perl.
J. Pressure Vessel Technol. Aug 2003, 125(3): 335-341 (7 pages)
Published Online: August 1, 2003
Article history
Received:
March 12, 2003
Revised:
April 23, 2003
Online:
August 1, 2003
Citation
Cote , P. J., Lee , S. L., Todaro , M. E., and Kendall, G. (August 1, 2003). "Application of Laser Pulse Heating to Simulate Thermomechanical Damage at Gun Bore Surfaces." ASME. J. Pressure Vessel Technol. August 2003; 125(3): 335–341. https://doi.org/10.1115/1.1593697
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