ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Laser shock processing (LSP) has been presented as an effective technology for improvingsurface mechanical and corrosion properties of metals, and is being developed as a practicalprocess amenable to production engineering. The main acknowledged advantages of the lasershock processing technique consist on its capability of inducing a relatively deep compressionresidual stresses field into metallic alloy pieces allowing an improved mechanical behaviour,explicitly, the life improvement of the treated specimens against wear, crack growth and stresscorrosion cracking. In the present paper, practical results at laboratory scale on the applicationof Laser Shock Processing are presented showing the obtained tensile residual stressesrelaxation along with corresponding preliminary results about the resulting mechanicalproperties improvement induced by the treatment. Additionally, the influence of differentirradiation parameters will be presented along with a physical interpretation of the mechanicaleffects induced in the materials by the characteristic fast laser-plasma interaction regimeoccurring in the process and model based assessments on the real possibilities of thetechnique as a substitutive of traditional techniques as, for example, shot peening. From aspecific point of view, a critical analysis of the relative influences of coupled thermal andmechanical stress and deformation effects during LSP is presented
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.1116.pdf
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