Startseite Analysis of phase formation in Ni-rich alloys of the Ni–Ta–W system by calorimetry, DTA, SEM, and TEM
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Analysis of phase formation in Ni-rich alloys of the Ni–Ta–W system by calorimetry, DTA, SEM, and TEM

  • Victor T. Witusiewicz EMAIL logo , Ulrike Hecht , Nils Warnken , Suzana G. Fries und Weiping Hu
Veröffentlicht/Copyright: 19. Januar 2022
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 97 Heft 4

Abstract

The partial enthalpies of dissolution of pure Ni,Wand Ta in liquid ternary Ni –Ta –W alloys have been determined at (1773 ± 5) K using a high temperature isoperibolic calorimeter. Measurements were performed in Ni-rich alloys (from 80 to 100 at.% Ni) along sections with constant Ta .W atomic ratios 1 : 0, 2 : 1, 1 : 2, and 0 : 1. The partial enthalpies and thereby the integral enthalpy of mixing of these ternary alloys are calculated from the partial enthalpies of dissolution using SGTE Gibbs energies for pure elements as reference.

The obtained thermochemical data confirm that in the investigated Ni-rich alloys the binary interactions between Ta and W as well as the ternary Ni –Ta –W interactions are negligibly small. Due to this the variation of the integral enthalpy of mixing of the ternary alloys is well described as linear combination of the constituent Ni –Ta and Ni –W binaries. Such behaviour of the ternary liquid alloys is related to a very low probability of new ternary stable phases to occur in solid state. This prediction is confirmed by differential thermal analysis, scanning electron microscopy, and transmission electron microscopy of the as-solidified and annealed samples obtained as last alloy compositions in the series of calorimetric dissolution.

Key words: Ni –Ta –W system; Enthalpy of formation; Solid alloy; Liquid alloy; Microstructure
V. T. Witusiewicz ACCESS e.V. Intzestr. 5, D-52072 Aachen, Germany Tel.: +49 241 809 8007 Fax: +49 241 38578

Dedicated to Prof. Dr. Ferdinand Sommer on the occasion of his 65th birthday

  1. We gratefully acknowledge the funding of this work by the Deutsche Forschungsgemeinschaft (DFG) under grant no. SFB 370 – “Integrative Werkstoffmodellierung”. Thanks are due to Dr. N. Dupin for the fruitful discussions.

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Received: 2005-09-20
Accepted: 2005-11-20
Published Online: 2022-01-19

© 2006 Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Frontmatter
  2. Editorial
  3. Evolution of the mixed-mode character of solid-state phase transformations in metals involving solute partitioning
  4. Liquid–liquid interfacial tension in themonotectic alloy (Al34.5Bi65.5)95Si5 (wt.%)
  5. Influence of Sb additions on surface tension and density of Sn–Sb, Sn–Ag–Sb and Sn–Ag–Cu–Sb alloys: Experiment vs. modeling
  6. Liquid–liquid transition in elemental liquids investigated by sound velocity measurements: trends in the periodic table
  7. Bulk and surface properties of liquid Ga–Tl and Zn–Cd alloys
  8. Structure-induced order – disorder transformation in Cd – Na liquid alloys
  9. An indirect approach to measure glass transition temperature in metallic glasses
  10. Fragility, kinetic stability and phase separations in the undercooled state of bulk glass formers – a case study on metallic model systems
  11. Development of long-period ordered structures during crystallisation of amorphous Mg80Cu10Y10 and Mg83Ni9Y8
  12. Isothermal crystallization behavior of undercooled liquid Pd40Cu30Ni10P20 in terms of crystal growth, overall volume crystallization kinetics and their relation to the viscosity temperature dependence
  13. The magnesium-ytterbium system: A contribution to the thermodynamics of solid alloys
  14. Experimental investigation and thermodynamic modelling of the Mg–Al-rich region of the Mg–Al–Sr System
  15. Thermodynamic properties and phase relations of Zn-rich alloys in the system Pt–Zn
  16. Comparison of thermodynamic data of the ternary Cu–Sn–Zn system, measured with the EMF and with the calorimetric method
  17. Analysis of phase formation in Ni-rich alloys of the Ni–Ta–W system by calorimetry, DTA, SEM, and TEM
  18. Site preference, thermodynamic, and magnetic properties of the ternary Laves phase Ti(Fe1 – xAlx)2 with the crystal structure of the MgZn2-type
  19. Activity measurements on the Al-rich region of the Ni–Al system – A high temperature mass spectrometric study
  20. Metastable phases and nanocrystalline-forming ability (NFA) of melt-quenched Ni-rich (Zr, Hf)–Ni alloys
  21. Low temperature deposition with inductively coupled plasma
  22. Instructions for Authors
  23. Personal/Personelles
  24. Press/Presse
  25. Conferences/Konferenzen
  26. Frontmatter
  27. Editorial
  28. Editorial
  29. BBasic
  30. Evolution of the mixed-mode character of solid-state phase transformations in metals involving solute partitioning
  31. Liquid–liquid interfacial tension in themonotectic alloy (Al34.5Bi65.5)95Si5 (wt.%)
  32. Influence of Sb additions on surface tension and density of Sn–Sb, Sn–Ag–Sb and Sn–Ag–Cu–Sb alloys: Experiment vs. modeling
  33. Liquid–liquid transition in elemental liquids investigated by sound velocity measurements: trends in the periodic table
  34. Bulk and surface properties of liquid Ga–Tl and Zn–Cd alloys
  35. Structure-induced order – disorder transformation in Cd – Na liquid alloys
  36. An indirect approach to measure glass transition temperature in metallic glasses
  37. Fragility, kinetic stability and phase separations in the undercooled state of bulk glass formers – a case study on metallic model systems
  38. Development of long-period ordered structures during crystallisation of amorphous Mg80Cu10Y10 and Mg83Ni9Y8
  39. Isothermal crystallization behavior of undercooled liquid Pd40Cu30Ni10P20 in terms of crystal growth, overall volume crystallization kinetics and their relation to the viscosity temperature dependence
  40. The magnesium-ytterbium system: A contribution to the thermodynamics of solid alloys
  41. Experimental investigation and thermodynamic modelling of the Mg–Al-rich region of the Mg–Al–Sr System
  42. Thermodynamic properties and phase relations of Zn-rich alloys in the system Pt–Zn
  43. Comparison of thermodynamic data of the ternary Cu–Sn–Zn system, measured with the EMF and with the calorimetric method
  44. Analysis of phase formation in Ni-rich alloys of the Ni–Ta–W system by calorimetry, DTA, SEM, and TEM
  45. Site preference, thermodynamic, and magnetic properties of the ternary Laves phase Ti(Fe1 – xAlx)2 with the crystal structure of the MgZn2-type
  46. Activity measurements on the Al-rich region of the Ni–Al system – A high temperature mass spectrometric study
  47. Metastable phases and nanocrystalline-forming ability (NFA) of melt-quenched Ni-rich (Zr, Hf)–Ni alloys
  48. AApplied
  49. Low temperature deposition with inductively coupled plasma
  50. Notifications/Mitteilungen
  51. Instructions for Authors
  52. Personal/Personelles
  53. Press/Presse
  54. Conferences/Konferenzen
https://doi.org/10.1515/ijmr-2006-0073
Schlagwörter für diesen Artikel
Ni –Ta –W system; Enthalpy of formation; Solid alloy; Liquid alloy; Microstructure

Artikel in diesem Heft

  1. Frontmatter
  2. Editorial
  3. Evolution of the mixed-mode character of solid-state phase transformations in metals involving solute partitioning
  4. Liquid–liquid interfacial tension in themonotectic alloy (Al34.5Bi65.5)95Si5 (wt.%)
  5. Influence of Sb additions on surface tension and density of Sn–Sb, Sn–Ag–Sb and Sn–Ag–Cu–Sb alloys: Experiment vs. modeling
  6. Liquid–liquid transition in elemental liquids investigated by sound velocity measurements: trends in the periodic table
  7. Bulk and surface properties of liquid Ga–Tl and Zn–Cd alloys
  8. Structure-induced order – disorder transformation in Cd – Na liquid alloys
  9. An indirect approach to measure glass transition temperature in metallic glasses
  10. Fragility, kinetic stability and phase separations in the undercooled state of bulk glass formers – a case study on metallic model systems
  11. Development of long-period ordered structures during crystallisation of amorphous Mg80Cu10Y10 and Mg83Ni9Y8
  12. Isothermal crystallization behavior of undercooled liquid Pd40Cu30Ni10P20 in terms of crystal growth, overall volume crystallization kinetics and their relation to the viscosity temperature dependence
  13. The magnesium-ytterbium system: A contribution to the thermodynamics of solid alloys
  14. Experimental investigation and thermodynamic modelling of the Mg–Al-rich region of the Mg–Al–Sr System
  15. Thermodynamic properties and phase relations of Zn-rich alloys in the system Pt–Zn
  16. Comparison of thermodynamic data of the ternary Cu–Sn–Zn system, measured with the EMF and with the calorimetric method
  17. Analysis of phase formation in Ni-rich alloys of the Ni–Ta–W system by calorimetry, DTA, SEM, and TEM
  18. Site preference, thermodynamic, and magnetic properties of the ternary Laves phase Ti(Fe1 – xAlx)2 with the crystal structure of the MgZn2-type
  19. Activity measurements on the Al-rich region of the Ni–Al system – A high temperature mass spectrometric study
  20. Metastable phases and nanocrystalline-forming ability (NFA) of melt-quenched Ni-rich (Zr, Hf)–Ni alloys
  21. Low temperature deposition with inductively coupled plasma
  22. Instructions for Authors
  23. Personal/Personelles
  24. Press/Presse
  25. Conferences/Konferenzen
  26. Frontmatter
  27. Editorial
  28. Editorial
  29. BBasic
  30. Evolution of the mixed-mode character of solid-state phase transformations in metals involving solute partitioning
  31. Liquid–liquid interfacial tension in themonotectic alloy (Al34.5Bi65.5)95Si5 (wt.%)
  32. Influence of Sb additions on surface tension and density of Sn–Sb, Sn–Ag–Sb and Sn–Ag–Cu–Sb alloys: Experiment vs. modeling
  33. Liquid–liquid transition in elemental liquids investigated by sound velocity measurements: trends in the periodic table
  34. Bulk and surface properties of liquid Ga–Tl and Zn–Cd alloys
  35. Structure-induced order – disorder transformation in Cd – Na liquid alloys
  36. An indirect approach to measure glass transition temperature in metallic glasses
  37. Fragility, kinetic stability and phase separations in the undercooled state of bulk glass formers – a case study on metallic model systems
  38. Development of long-period ordered structures during crystallisation of amorphous Mg80Cu10Y10 and Mg83Ni9Y8
  39. Isothermal crystallization behavior of undercooled liquid Pd40Cu30Ni10P20 in terms of crystal growth, overall volume crystallization kinetics and their relation to the viscosity temperature dependence
  40. The magnesium-ytterbium system: A contribution to the thermodynamics of solid alloys
  41. Experimental investigation and thermodynamic modelling of the Mg–Al-rich region of the Mg–Al–Sr System
  42. Thermodynamic properties and phase relations of Zn-rich alloys in the system Pt–Zn
  43. Comparison of thermodynamic data of the ternary Cu–Sn–Zn system, measured with the EMF and with the calorimetric method
  44. Analysis of phase formation in Ni-rich alloys of the Ni–Ta–W system by calorimetry, DTA, SEM, and TEM
  45. Site preference, thermodynamic, and magnetic properties of the ternary Laves phase Ti(Fe1 – xAlx)2 with the crystal structure of the MgZn2-type
  46. Activity measurements on the Al-rich region of the Ni–Al system – A high temperature mass spectrometric study
  47. Metastable phases and nanocrystalline-forming ability (NFA) of melt-quenched Ni-rich (Zr, Hf)–Ni alloys
  48. AApplied
  49. Low temperature deposition with inductively coupled plasma
  50. Notifications/Mitteilungen
  51. Instructions for Authors
  52. Personal/Personelles
  53. Press/Presse
  54. Conferences/Konferenzen
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