Paper Title:
Pre-Stressed Sub-Surface Contribution on Bulk Diffusion in Metallic Solids
  Abstract

Our recent modelling works and corresponding numerical simulations realized to describe the UO2 oxidation processes confirm the theory showing that an applied mechanical strain can strongly affect the local oxygen diffusion in a stressed solid. This result allows us to assume that stress field, previously applied at the surface of a metallic sample on several microns, will delay the degradation during its oxidation. Considering this hypothesis, we implemented a FEM simulation code developed in our laboratory to numerically investigate some different stress fields applied on a sample sub-surface, that might significantly modify the volume diffusion of oxygen during the oxidation process. The results of our simulations are presented and discussed from the perspective to study the consequences of a surface mechanical treatment on the durability of a metallic material.

  Info
Periodical
Defect and Diffusion Forum (Volumes 309-310)
Edited by
B.S. Bokstein, A.O. Rodin and B.B. Straumal
Pages
149-154
DOI
10.4028/www.scientific.net/DDF.309-310.149
Citation
L. Raceanu, V. Optasanu, T. Montesin, N. Creton, "Pre-Stressed Sub-Surface Contribution on Bulk Diffusion in Metallic Solids", Defect and Diffusion Forum, Vols. 309-310, pp. 149-154, 2011
Online since
March 2011
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Price
$32.00
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