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Thermodynamic re-modeling of the Co–Gd system

Paper presented at the 2nd Sino-German Symposium on Computational Thermodynamics and Kinetics and their Applications to Solidification
  • Wei Wang , Cuiping Guo , Changrong Li und Zhenmin Du
Veröffentlicht/Copyright: 11. Juni 2013
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 101 Heft 11

Abstract

The Co–Gd system was re-assessed using the CALPHAD technique. The solution phases (liquid, body-centered cubic, face-centered cubic and hexagonal close-packed) were described by the substitutional solution model. The temperature dependence of the interaction parameters of the liquid phase was separately expressed by the linear function and Kaptay equation. The intermetallic compounds Co17Gd2 and Co5Gd, which have the same CaCu5-type structure, were treated as one phase and described by a three-sublattice model (Co2, Gd)(Co2, Gd)2Co15, with Co2 and Gd mixing on the first and second sublattices and the third sublattice occupied by Co. The other compounds (Co7Gd2, Co3 Gd, Co2Gd, Co3Gd4 and CoGd3) were treated as stoichiometric compounds. Two sets of self-consistent thermodynamic parameters of the Co–Gd system were obtained.

Keywords: Co–Gd system; Rare earth alloys; Kaptay equation; Thermodynamic modeling; CALPHAD technique

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Received: 2010-1-15
Accepted: 2010-5-7
Published Online: 2013-06-11
Published in Print: 2010-11-01

© 2010, Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. 2nd Sino-German Symposium on Computational Thermodynamics and Kinetics and their Applications to Solidification
  5. Basic
  6. Multiscale simulations on the grain growth process in nanostructured materials
  7. Thermodynamic re-modeling of the Co–Gd system
  8. Microstructure and tribological properties of in-situ Y2O3/Ti-5Si alloy composites
  9. Phase relations in the ZrO2–Nd2O3–Y2O3 system: experimental study and CALPHAD assessment
  10. Phase transition in nanocrystalline iron: Atomistic-level simulations
  11. Thermodynamic assessment of the Cr–Al–Nb system
  12. Experimental investigation and thermodynamic modeling of the Cu–Mn–Zn system
  13. Elastic constants and thermophysical properties of Al–Mg–Si alloys from first-principles calculations
  14. Predicting microsegregation in multicomponent aluminum alloys – progress in thermodynamic consistency
  15. Phase reaction of ceria in LPS–SiC with Al2O3–Y2O3 and AlN–Y2O3 additives
  16. Applied
  17. Phase equilibria in the Fe–Ti–V system
  18. A thermodynamic description of the Ce–La–Mg system
  19. Molar volume calculation of Ga–Bi–X (X=Sn, In) liquid alloys using the general solution model
  20. Microstructural analysis in the vacuum brazing of copper to copper using a phosphor–copper brazing filler metal
  21. Microstructural development of the hot extruded magnesium alloy AZ31 under cyclic testing conditions
  22. DGM News
  23. DGM News
https://doi.org/10.3139/146.110415
Schlagwörter für diesen Artikel
Co–Gd system; Rare earth alloys; Kaptay equation; Thermodynamic modeling; CALPHAD technique

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. 2nd Sino-German Symposium on Computational Thermodynamics and Kinetics and their Applications to Solidification
  5. Basic
  6. Multiscale simulations on the grain growth process in nanostructured materials
  7. Thermodynamic re-modeling of the Co–Gd system
  8. Microstructure and tribological properties of in-situ Y2O3/Ti-5Si alloy composites
  9. Phase relations in the ZrO2–Nd2O3–Y2O3 system: experimental study and CALPHAD assessment
  10. Phase transition in nanocrystalline iron: Atomistic-level simulations
  11. Thermodynamic assessment of the Cr–Al–Nb system
  12. Experimental investigation and thermodynamic modeling of the Cu–Mn–Zn system
  13. Elastic constants and thermophysical properties of Al–Mg–Si alloys from first-principles calculations
  14. Predicting microsegregation in multicomponent aluminum alloys – progress in thermodynamic consistency
  15. Phase reaction of ceria in LPS–SiC with Al2O3–Y2O3 and AlN–Y2O3 additives
  16. Applied
  17. Phase equilibria in the Fe–Ti–V system
  18. A thermodynamic description of the Ce–La–Mg system
  19. Molar volume calculation of Ga–Bi–X (X=Sn, In) liquid alloys using the general solution model
  20. Microstructural analysis in the vacuum brazing of copper to copper using a phosphor–copper brazing filler metal
  21. Microstructural development of the hot extruded magnesium alloy AZ31 under cyclic testing conditions
  22. DGM News
  23. DGM News
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