WorldCat Identities

Ben Afia, Souhail (1986-....).

Overview
Works: 1 works in 1 publications in 1 language and 1 library holdings
Roles: Author
Publication Timeline
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Most widely held works by Souhail Ben Afia
Influence d'un traitement mécanique de nanocristallisation superficielle (SMAT) sur l'oxydation à hautes températures de l'acier 316L by Souhail Ben Afia( )

1 edition published in 2016 in French and held by 1 WorldCat member library worldwide

This work aims at highlighting the impact of the SMA process (Surface Mechanical Attrition Treatment) on the oxidation resistance of steels of type AISI 316L. This study compares the composition and morphology of the oxide layers, the oxidation kinetics, the growth mechanisms and the residual stresses on the surface of treated and oxidized samples at different temperatures. These observations show a beneficial effect of the SMA process on the oxidation resistance of the 316L steel for high temperatures. Indeed, the oxidation kinetics of the treated samples is shown to be related to a preferential growth of chromia starting at 700°C. This led us to conclude that the SMAT used on the 316L reverses the main oxide phase, inhibiting the growth of the hematite and promoting the chromia. An oxidation scenario for untreated and SMATed steel samples is proposed, demonstrating the role of the density of the grain boundaries introduced by the mechanical treatment. During this work, a comprehensive numerical chaining process is proposed. It takes into account the process parameters and mechanical properties of the material, in order to predict the characteristics of the nanostructure generated by SMAT, that could influence the oxidation of this stainless steel at high temperatures
 
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French (1)