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On the relation between the anisotropies of grain boundary segregation and grain boundary energy

  • Paul Wynblatt EMAIL logo , Zhan Shi , Ying Pang and Dominique Chatain
Published/Copyright: February 3, 2022
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Abstract

Recently developed models of grain boundary segregation and grain boundary energy, as a function of the 5 macroscopic parameters of grain boundary orientation, have been used to predict the behavior of a simple face centred cubic alloy. It is shown that the equilibrium composition, as well as the composition profile, on one side of a boundary with a given terminating plane, depends on the crystallographic orientation of the terminating plane of the other side of the grain boundary. These predictions are confirmed by recent measurements of Nb segregation to TiO2 grain boundaries. In addition, the models show stronger solute segregation to higher energy grain boundaries of the pure solvent. This result is also confirmed by the experimental distribution in orientation space of Nb segregation to TiO2 grain boundaries, when it is compared to the orientation distribution of the grain boundary energy of pure TiO2. The overall results are consistent with expectations from the Gibbs adsorption isotherm, and indicate that grain boundary energy anisotropy is decreased by grain boundary segregation.


Professor Paul Wynblatt Materials Science and Engineering 3311 Wean Hall Carnegie Mellon University Pittsburgh, PA 15213 –3890 Tel.: +412 268 8711 Fax: +412 268 7596

Dedicated to Professor Dr. Lasar Shvindlerman on the occasion of his 70th birthday


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  1. *

    Laboratoire Propre du CNRS associé aux Universités d’Aix-Marseille

Received: 2005-04-21
Accepted: 2005-07-05
Published Online: 2022-02-03

© 2005 Carl Hanser Verlag, München

Articles in the same Issue

  1. Frontmatter
  2. Editorial
  3. Editorial
  4. Articles Basic
  5. Thermodynamics of grain boundary adsorption in binary systems with limited solubility
  6. Microstructural characteristics of 3-d networks
  7. On the three-dimensional twin-limited microstructure
  8. Grain growth kinetics in 2D polycrystals: impact of triple junctions
  9. Thermal stability of polycrystalline nanowires
  10. Conservative motion of parent-martensite interfaces
  11. Enthalpy – entropy compensation effect in grain boundary phenomena
  12. Thermodynamic stabilization of nanocrystallinity
  13. On the relation between the anisotropies of grain boundary segregation and grain boundary energy
  14. Influence of faceting-roughening on triple-junction migration in zinc
  15. The influence of triple junction kinetics on the evolution of polycrystalline materials during normal grain growth: New evidence from in-situ experiments using columnar Al foil
  16. Grain boundary dynamics and selective grain growth in non-ferromagnetic metals in high magnetic fields
  17. Grain boundary mobility under a stored-energy driving force: a comparison to curvature-driven boundary migration
  18. Diffusional behavior of nanoscale lead inclusions in crystalline aluminum
  19. Quantitative experiments on the transition between linear to non-linear segregation of Ag in Cu bicrystals studied by radiotracer grain boundary diffusion
  20. Room-temperature grain boundary diffusion data measured from historical artifacts
  21. Solid state infiltration of porous steel with aluminium by the forcefill process
  22. A mechanism of plane matching boundary-assisted α/γ phase transformation in Fe–Cr alloy based on in-situ observations
  23. Fast penetration of Ga in Al: liquid metal embrittlement near the threshold of grain boundary wetting
  24. High-pressure effect on grain boundary wetting in aluminium bicrystals
  25. Grain boundary segregation and fracture
  26. Notifications/Mitteilungen
  27. Personal/Personelles
  28. Press/Presse
  29. Conferences/Konferenzen
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