caa a22 4500 463221605 CHVBK 20180405153214.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s10853-007-1502-4 doi (NATIONALLICENCE)springer-10.1007/s10853-007-1502-4 Influence of thermal and mechanical surface modifications induced by laser shock processing on the initiation of corrosion pits in 316L stainless steel [Elektronische Daten] [Patrice Peyre, C. Carboni, P. Forget, G. Beranger, C. Lemaitre, D. Stuart] Pure mechanical and thermo-mechanical laser shock processing treatments have been carried out on an AISI 316L stainless steel. Surface properties, mostly mechanical and metallurgical modifications, were analysed at different scales: a local scale using the nano-indentation technique and AFM analysis, and a more macroscopic scale, using microhardness, optical microscopy and residual stress determinations. After a pure mechanical laser-peening treatment, a significant improvement in the pitting corrosion resistance (+0.1V) was observed in 0.05M NaCl. This improvement was attributed to the combined effects of compressive residual stresses and work-hardening, and, in turn, to a mechano-electrochemical phenomenon by which a modification of cathodic reactions occurs during electrochemical tests. For the surface treated by thermo-mechanical laser peening (combination of a surface ablation and shock waves), a tendency for decreasing resistance against pitting corrosion was shown, and attributed to the processing-specific surface texture (ablation craters), which made the material susceptible for the creation of occluded cells. Springer Science+Business Media, LLC, 2007 Peyre Patrice GERAILP-LALP, UPR 1578 CNRS, 16bis Avenue Prieur de la Côte d'Or, 94114, Arcueil, France aut Carboni C. GERAILP-LALP, UPR 1578 CNRS, 16bis Avenue Prieur de la Côte d'Or, 94114, Arcueil, France aut Forget P. Cea-Saclay, 91191, Gif Sur Yvette, France aut Beranger G. Laboratoire ROBERVAL, UTC, 60205, Compiegne Cedex, France aut Lemaitre C. Laboratoire ROBERVAL, UTC, 60205, Compiegne Cedex, France aut Stuart D. GERAILP-LALP, UPR 1578 CNRS, 16bis Avenue Prieur de la Côte d'Or, 94114, Arcueil, France aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/16(2007-08-01), 6866-6877 0022-2461 42:16<6866 2007 42 10853 https://doi.org/10.1007/s10853-007-1502-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-007-1502-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Peyre Patrice GERAILP-LALP, UPR 1578 CNRS, 16bis Avenue Prieur de la Côte d'Or, 94114, Arcueil, France aut NATIONALLICENCE 700 1- Carboni C. GERAILP-LALP, UPR 1578 CNRS, 16bis Avenue Prieur de la Côte d'Or, 94114, Arcueil, France aut NATIONALLICENCE 700 1- Forget P. Cea-Saclay, 91191, Gif Sur Yvette, France aut NATIONALLICENCE 700 1- Beranger G. Laboratoire ROBERVAL, UTC, 60205, Compiegne Cedex, France aut NATIONALLICENCE 700 1- Lemaitre C. Laboratoire ROBERVAL, UTC, 60205, Compiegne Cedex, France aut NATIONALLICENCE 700 1- Stuart D. GERAILP-LALP, UPR 1578 CNRS, 16bis Avenue Prieur de la Côte d'Or, 94114, Arcueil, France aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/16(2007-08-01), 6866-6877 0022-2461 42:16<6866 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer