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Concentration phase transition associated with grain boundary segregation in systems with restricted solubility

  • Boris Bokstein and Alexey Rodin
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 4

Abstract

A new model of grain boundary segregation in systems with restricted solubility is proposed. The model is based on the following assumption: As soon as the solute concentration in the grain boundary achieves the bulk solubility limit, embryos of compounds appear in the grain boundary. The composition of these embryos corresponds closely with the nearest phase in the grain according to the phase diagram. The appropriate segregation isotherm taking into account these embryos demonstrates the concentration phase transition which shows itself as a jump in grain boundary concentration. The location and the height of this jump are discussed.

Keywords: Grain boundaries; Segregation isotherm; Concentration phase transition
* Correspondence address, Prof. Boris Bokstein Department of physical chemistry 4, Leninsky pr-t Institute of Steel and Alloys, Moscow, 119049, Russia Tel.: +7 495 638 44 66 Fax: +7 495 236 87 38 E-mail:

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Received: 2008-9-13
Accepted: 2009-2-10
Published Online: 2013-06-11
Published in Print: 2009-04-01

© 2009, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.110076
Keywords for this article
Grain boundaries; Segregation isotherm; Concentration phase transition

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Prof. Dr. Günter Gottstein
  5. Feature
  6. Interface Migration in Metals (IMM):“Vingt Ans Après” (Twenty Years Later)
  7. Basic
  8. On the solute-defect interaction in the framework of a defactant concept
  9. A new model of dynamic recovery for Stage III of pure fcc metals without cross slip
  10. Sequence of distinct microyielding stages of the monocrystalline nickel-base superalloy CMSX-6 at high temperatures
  11. Comparison of texture evolution in fcc metals predicted by various grain cluster homogenization schemes
  12. Recrystallization initiated by low-temperature grain boundary motion coupled to stress
  13. Sub-grain boundary mobilities during recovery of binary Al–Mn alloys
  14. Concentration phase transition associated with grain boundary segregation in systems with restricted solubility
  15. Second-order faceting–roughening of the tilt grain boundary in zinc
  16. A model of grain boundary diffusion in polycrystals with evolving microstructure
  17. Linear measures for polyhedral networks
  18. Testing a curvature driven moving finite element grain growth model with the generalized three dimensional von Neumann relation
  19. Grain-boundary source/sink behavior for point defects: An atomistic simulation study
  20. Applied
  21. Deformation modes and anisotropy in magnesium alloy AZ31
  22. Control of recrystallisation texture and texture-related properties in industrial production of aluminium sheet
  23. The combined effect of static recrystallization and twinning on texture in magnesium alloys AM30 and AZ31
  24. Comparison of damage development depending on the local microstructure in low alloyed Al-TRIP-steels, IF steel and a DP steel
  25. Nanoindentation of Ti50Ni48Fe2 and Ti50Ni40Cu10 shape memory alloys
  26. Early detection of crack initiation sites in TiAl alloys during low-cycle fatigue at high temperatures utilizing digital image correlation
  27. Superplastic failure mode in ultrafine grained magnesium alloy AZ31
  28. High temperature magnetic strengthening in iron-based alloys: Magnetic effects on deformation and fracture, revisited
  29. Notification
  30. DGM News
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