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Application of cluster dynamics modeling to the precipitation in aluminum alloys

  • P. Guyot , J. Lepinoux and C. Sigli
Published/Copyright: June 11, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 100 Issue 10

Abstract

The cluster dynamics method is used to model at the atomic scale the kinetics of first order phase transformations. Clusters are embryos of the growing phase. Their formation kinetics from the solid solution are obtained by solving a set of master differential equations. This set is the continuity equation of the cluster size distribution function and is based on inter-cluster solute exchanges. These exchanges, absorption and emission of solute atoms, are controlled by the solute diffusivities and the cluster free energies. The model is applied here to the precipitation of Al3(Zr, Sc) dispersoids with the L12 structure in Al–rich Zr–Sc solid solutions. Several characteristic features are obtained and discussed: 1) In the ternary alloy, the fast (Sc) diffusing species always controls the nucleation, in contrast to classical thermodynamical descriptions. 2) A Zr–Sc thermodynamic coupling induces heterogeneous nucleation on Zr atoms. 3) A segregation on the dispersoids outer shell of the slow diffusing solute (Zr) occurs during the coarsening stage, slowing down their coarsening rate. Finally, some extensions and prospects of the method are considered.

Keywords: Nucleation; Growth; Coarsening; Kinetics; Al(ScZr)
* Correspondence address, Professor Pierre Guyot SIMAP, Institut National Polytechnique de Grenoble 38402 Saint Martin d'Hères, France Tel.: +33 4 7682 6613 Fax: +33 4 7682 6644 E-mail:

Dedicated to the late Prof. Charles Crussard (1916–2008)

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Received: 2008-9-15
Accepted: 2009-7-25
Published Online: 2013-06-11
Published in Print: 2009-10-01

© 2009, Carl Hanser Verlag, München

Articles in the same Issue

  1. Contents
  2. Contents
  3. Introduction
  4. Introduction
  5. G. Petzow: Laudation for Peter Paul Schepp
  6. Dr. Schepp's retirement after 20 years of service was celebrated
  7. Preface to Feature Articles
  8. “SURFACE and INTERFACE ENGINEERING”
  9. Feature
  10. Thermodynamics of reactions and phase transformations at interfaces and surfaces
  11. Oxidation of palladium: from single crystal surfaces towards nanoparticles
  12. On the high-temperature oxidation of MCrAlY coatings
  13. Conducting polymers for corrosion protection: a review
  14. Fundamental and applied aspects of laser surface engineering
  15. Low-temperature gaseous surface hardening of stainless steel: the current status
  16. Foreword
  17. Foreword
  18. Editorial
  19. The scientific work of Charles Crussard (1916–2008)
  20. Review
  21. Charles Crussard's early contributions: Recrystallization in situ and a Grain Boundary study with J. Friedel and B. Cullity
  22. Magnetohydrodynamics applied to materials processing
  23. Charles Crussard's contribution to sheet metal forming and participation in IDDRG
  24. Glide of dislocations in non-octahedral planes of fcc metals: a review
  25. The deformation stage II of face-centered cubic crystals: Fifty years of investigations
  26. Nucleation and growth during primary recrystallization of certain metals and alloys with a face-centered cubic structure: Formation of the cube texture
  27. Basic
  28. Andrade creep revisited
  29. Application of cluster dynamics modeling to the precipitation in aluminum alloys
  30. On the effect of pre-recovery on subsequent recrystallization
  31. The interplay between grain boundaries and disclinations in condensed matter physics
  32. Plasticity of nanocrystalline materials: a critical viewpoint
  33. Thermoelectric power applied to metallurgy: principle and recent applications
  34. Notifications
  35. People
https://doi.org/10.3139/146.110192
Keywords for this article
Nucleation; Growth; Coarsening; Kinetics; Al(ScZr)

Articles in the same Issue

  1. Contents
  2. Contents
  3. Introduction
  4. Introduction
  5. G. Petzow: Laudation for Peter Paul Schepp
  6. Dr. Schepp's retirement after 20 years of service was celebrated
  7. Preface to Feature Articles
  8. “SURFACE and INTERFACE ENGINEERING”
  9. Feature
  10. Thermodynamics of reactions and phase transformations at interfaces and surfaces
  11. Oxidation of palladium: from single crystal surfaces towards nanoparticles
  12. On the high-temperature oxidation of MCrAlY coatings
  13. Conducting polymers for corrosion protection: a review
  14. Fundamental and applied aspects of laser surface engineering
  15. Low-temperature gaseous surface hardening of stainless steel: the current status
  16. Foreword
  17. Foreword
  18. Editorial
  19. The scientific work of Charles Crussard (1916–2008)
  20. Review
  21. Charles Crussard's early contributions: Recrystallization in situ and a Grain Boundary study with J. Friedel and B. Cullity
  22. Magnetohydrodynamics applied to materials processing
  23. Charles Crussard's contribution to sheet metal forming and participation in IDDRG
  24. Glide of dislocations in non-octahedral planes of fcc metals: a review
  25. The deformation stage II of face-centered cubic crystals: Fifty years of investigations
  26. Nucleation and growth during primary recrystallization of certain metals and alloys with a face-centered cubic structure: Formation of the cube texture
  27. Basic
  28. Andrade creep revisited
  29. Application of cluster dynamics modeling to the precipitation in aluminum alloys
  30. On the effect of pre-recovery on subsequent recrystallization
  31. The interplay between grain boundaries and disclinations in condensed matter physics
  32. Plasticity of nanocrystalline materials: a critical viewpoint
  33. Thermoelectric power applied to metallurgy: principle and recent applications
  34. Notifications
  35. People
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