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Journal of Materials Science

, Volume 44, Issue 17, pp 4604–4612 | Cite as

Finite element simulation of complex interfacial segregation phenomena in dilute alloys

  • F. TancretEmail author
  • F. Fournier Dit Chabert
  • F. Christien
  • R. Le Gall
Article

Abstract

Segregation of trace elements on a surface, at grain boundaries or more generally in any interface can have important consequences: adhesion of thin films, catalytic activity, embrittlement of steels by P or of nickel alloys by S, reinforcement of nickel alloys by B, etc. Segregation kinetics can be simulated by a finite element (FE) approach, by implementing the Darken–Du Plessis equation at the interface and Fick’s diffusion laws in the bulk. It is then possible to simulate segregation kinetics in non-isothermal conditions, and to couple segregation and macroscopic heat transfer calculations. A previously developed model is here adapted to the case of complex interfacial segregation phenomena: (i) segregation of a single species with a solute–solute or solute–solvent interaction, (ii) co-segregation of two species with a site competition in the interface, and (iii) segregation of a single species at an interface between two phases. Results are compared with available experimental data.

Keywords

Finite Element Simulation Diffusion Mode Coverage Ratio Boundary Segregation Interfacial Concentration 

Notes

Acknowledgments

The authors would like to acknowledge the support extended by Snecma Services (Safran Group) for this research through the funding for the Florent Founier Dit Chabert’s PhD thesis, during which the original model was developed [6].

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • F. Tancret
    • 1
    Email author
  • F. Fournier Dit Chabert
    • 1
  • F. Christien
    • 1
  • R. Le Gall
    • 1
  1. 1.Université de Nantes, Nantes Atlantique Universités, Polytech’Nantes, LGMPANantes Cedex 3France

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