Laser Shock Processing of Metallic Materials: Coupling of Laser-Plasma Interaction and Material Behaviour Models for the Assessment of Key Process Issues

Journal Article · Fri Oct 08 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3507186· OSTI ID:21454852

Ocana, J L; Morales, M; Molpeceres, C; Porro, J A ^[1]

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1. Centro Laser UPM. Universidad Politecnica de Madrid, Campus Sur UPM. Edificio La Arboleda. Ctra. de Valencia, km. 7.3. 28031 Madrid (Spain)

Profiting by the increasing availability of laser sources delivering intensities above 109 W/cm{sup 2} with pulse energies in the range of several Joules and pulse widths in the range of nanoseconds, laser shock processing (LSP) is consolidating as an effective technology for the improvement of surface mechanical and corrosion resistance properties of metals. The main advantage of the laser shock processing technique consists on its capability of inducing a relatively deep compression residual stresses field into metallic alloy pieces allowing an improved mechanical behaviour, explicitly, the life improvement of the treated specimens against wear, crack growth and stress corrosion cracking. Although significant work from the experimental side has been contributed to explore the optimum conditions of application of the treatments and to assess their ultimate capability to provide enhanced mechanical behaviour to work-pieces of typical materials, only limited attempts have been developed in the way of full comprehension and predictive assessment of the characteristic physical processes and material transformations with a specific consideration of real material properties. In the present paper, a review on the physical issues dominating the development of LSP processes from a high intensity laser-matter interaction point of view is presented along with the theoretical and computational methods developed by the authors for their predictive assessment and practical results at laboratory scale on the application of the technique to different materials.

• OSTI ID: 21454852
• Journal Information: AIP Conference Proceedings, Vol. 1278, Issue 1; Conference: International symposium on high power laser ablation 2010, Santa Fe, NM (United States), 18-22 Apr 2010; Other Information: DOI: 10.1063/1.3507186; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ABLATION
ALLOYS
COMPRESSION
CORROSION RESISTANCE
CRACK PROPAGATION
CRACKING
LASER RADIATION
LASER-PRODUCED PLASMA
LASERS
MATERIALS WORKING
METALS
PLASMA SIMULATION
PROCESSING
PULSED IRRADIATION
RESIDUAL STRESSES
SHOCK WAVES
STRESS CORROSION
SURFACES
CHEMICAL REACTIONS
CORROSION
DECOMPOSITION
ELECTROMAGNETIC RADIATION
ELEMENTS
FABRICATION
IRRADIATION
PLASMA
PYROLYSIS
RADIATIONS
SIMULATION
STRESSES
THERMOCHEMICAL PROCESSES