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Quantitative phase field model for dislocation sink strength calculations

Authors
  • Rouchette, H.
  • Thuinet, L.
  • Legris, A.
  • Ambard, A.
  • Domain, C.1, 2, 3, 4, 5
  • 1 Unité Matériaux Et Transformations (UMET)
  • 2 UMR CNRS 8207
  • 3 Université Lille 1
  • 4 EDF R&D MMC
  • 5 Électricité de France
Type
Published Article
Journal
Computational Materials Science
Publisher
Elsevier
Publication Date
Jan 01, 2014
Accepted Date
Feb 08, 2014
Volume
88
Pages
50–60
Identifiers
DOI: 10.1016/j.commatsci.2014.02.011
Source
Elsevier
Keywords
License
Unknown

Abstract

An original phase-field model dedicated to the calculation of dislocation sink strength is presented. Through a three-step validation procedure, it is shown to predict with an excellent accuracy the value of the sink strength with or without elasticity in numerous test cases for which an analytical solution is known. Further analysis shows that existing analytical values of dislocation sink strength are significantly underestimated, an effect that results from simplifying assumptions made to take into account irradiation in the diffusion equation.

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