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Synthesis of Nanocrystalline B2 Structured (Ru, Ir) Al in the Ternary Ru–Al–Ir System by Mechanical Alloying and its Thermal Stability

  • K.W. Liu EMAIL logo , F. Mücklich , W. Pitschke , R. Birringer and K. Wetzig
Published/Copyright: February 15, 2022
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 92 Issue 8

Abstract

B2 structured single-phase (Ru,Ir)Al is synthesized directly in the ternary Ru– Al– Ir system by mechanical alloying. Complete solubility between pseudo-binary RuAl – IrAl is achieved in a composition range 10–25 at.% Ir, while the range for Al remains at 50 at.%. B2 structured (Ru, Ir) Al is formed by an abrupt reaction at the beginning of milling of all three compositions and a certain quantity of Ir was found to remain after the reaction. Further alloying and a reaction between Ir and sticking Al on the surfaces of milling tools take a much longer time and finally result in single phase B2 structured (Ru, Ir) Al. The ternary alloying element Ir has been found to ameliorate the sluggish reactivity of Ru by promoting the abrupt reaction. No decomposition process has been observed for the as-milled single-phase (Ru, Ir) Al by means of high-temperature X-ray diffraction, demonstrating the complete mutual solubility between pseudo-binary RuAl and IrAl in the present composition range. The structural evolution of as-milled materials includes reordering, strain relaxation and grain growth. The grain size of the as-milled (Ru, Ir) Al after exposure to elevated temperatures (up to 1273 K), turns out to be less than 30 nm and reflects its strong thermal stability.

Keywords: Nanocrystalline (Ru, Ir) Al and Ru–Al–Ir; Mechanical alloying; Thermal stability
K.W. Liu Institute for Functional Materials D-66041 Saarbrücken, Germany Fax:+49 681 3024876

Dedicated to Professor Dr. Dr. h.c. mult. Günter Petzow on the occasion of his 75th birthday

  1. The authors would like to thank Dr. C. E. Krill for his help in the XRD analysis and Dr. K. Smidoda and M. Schueler for their help in the TEM experiments. K. W. Liu would like to thank Dr. Mattern for his great help during the former's stay at IFW Dresden. Scholarship awarded to K. W. Liu from DFG Graduiertenkolleg (Saarbrücken) is gratefully acknowledged. The research work of Prof. Mücklich was supported by the Alfried Krupp Prize for Young University Teachers of the Krupp Foundation.

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Received: 2001-02-12
Published Online: 2022-02-15

© 2001 Carl Hanser Verlag, München

Articles in the same Issue

  1. Frontmatter
  2. Editorial
  3. Günter Lange 65 Years
  4. Aufsätze/Articles
  5. Deformation and Microstructure of Titanium Chips and Workpiece
  6. Eigenspannungsabbau in zügig und zyklisch beanspruchten Schweißverbindungen
  7. Bruchmechanische Nachweise zur Stahlgütewahl für moderne Feinkornbaustähle
  8. Experimental Analysis of the Interaction of “Hot” and “Cold” Volume Elements during Thermal Fatigue of a Cooled Component Made from AISI 3161 Steel
  9. Microstructure and Cyclic Deformation Behavior of Wheel and Tire Steels in Technically Relevant Heat Treatments
  10. Dehnratenabhängige Beschreibung der Fließkurven für erhoöhte Temperaturen
  11. Ein einfaches Modell für die Kinetik der Rekristallisation
  12. Determination of the Elastic Modulus of Wear Resistant Coatings by Quantitative Acoustic Microscopy
  13. Processing, Microstructure and Properties of Nb–TiO2 ODS Materials for Surgical Implants
  14. Influence of Surface Treatment on the Pitting Corrosion Behaviour of High Alloyed Stainless Steels in a Chloride Solution
  15. Unfall durch Drahtseilriss in einer Tunnelbaustelle
  16. Synthesis of Nanocrystalline B2 Structured (Ru, Ir) Al in the Ternary Ru–Al–Ir System by Mechanical Alloying and its Thermal Stability
  17. Preparation of Ca-α-sialon Ceramics with Compositions along the Si3N4-1/2 Ca3N2:3AIN Line
  18. SiC–Si3N4 Nanocomposite Prepared by the Addition of SiO2 + C
  19. Ceramics in the Si3N4–ZrO2–CeO2 System: Phase Composition Changes and Properties
  20. The Al–Ca System, Part 1: Experimental Investigation of Phase Equilibria and Crystal Structures
  21. The Al–Ca System, Part 2: Calorimetrie Measurements and Thermodynamic Assessment
  22. Phase Relationships of the Gd-Zn System
  23. Ableitung des Kristallisationspfades in ternären Gusslegierungen
  24. Bildanalyse komplexer Werkstoffgefüge durch Texturanalyse und Korrelation mit den Eigenschaften durch neuronale Netze
  25. Grain Growth in the Nanocrystalline W–Cu and Cu–Pb Composite Powders Prepared by Mechanical Alloying
  26. Toughening and Strengthening Response in Ni3Al-Bonded Titanium Carbide Cermets
  27. Creep Behavior of γ-TiAl-Based Alloys with Fully Lamellar Microstore
  28. Elevated Temperature Deformation of P/M Dispersion - Strengthened Copper and Aluminium
  29. Evolution of the Microstructure during Hot Working of Gamma-Based TiAl Alloys
  30. Interface Motion of β-Silicon Nitride in a Liquid Phase
  31. Internal Friction and Creep of Titanium Aluminides with Different Microstructure
  32. Mitteilungen/Notifications
  33. Personen
  34. Conferences
https://doi.org/10.1515/ijmr-2001-0168
Keywords for this article
Nanocrystalline (Ru, Ir) Al and Ru–Al–Ir; Mechanical alloying; Thermal stability

Articles in the same Issue

  1. Frontmatter
  2. Editorial
  3. Günter Lange 65 Years
  4. Aufsätze/Articles
  5. Deformation and Microstructure of Titanium Chips and Workpiece
  6. Eigenspannungsabbau in zügig und zyklisch beanspruchten Schweißverbindungen
  7. Bruchmechanische Nachweise zur Stahlgütewahl für moderne Feinkornbaustähle
  8. Experimental Analysis of the Interaction of “Hot” and “Cold” Volume Elements during Thermal Fatigue of a Cooled Component Made from AISI 3161 Steel
  9. Microstructure and Cyclic Deformation Behavior of Wheel and Tire Steels in Technically Relevant Heat Treatments
  10. Dehnratenabhängige Beschreibung der Fließkurven für erhoöhte Temperaturen
  11. Ein einfaches Modell für die Kinetik der Rekristallisation
  12. Determination of the Elastic Modulus of Wear Resistant Coatings by Quantitative Acoustic Microscopy
  13. Processing, Microstructure and Properties of Nb–TiO2 ODS Materials for Surgical Implants
  14. Influence of Surface Treatment on the Pitting Corrosion Behaviour of High Alloyed Stainless Steels in a Chloride Solution
  15. Unfall durch Drahtseilriss in einer Tunnelbaustelle
  16. Synthesis of Nanocrystalline B2 Structured (Ru, Ir) Al in the Ternary Ru–Al–Ir System by Mechanical Alloying and its Thermal Stability
  17. Preparation of Ca-α-sialon Ceramics with Compositions along the Si3N4-1/2 Ca3N2:3AIN Line
  18. SiC–Si3N4 Nanocomposite Prepared by the Addition of SiO2 + C
  19. Ceramics in the Si3N4–ZrO2–CeO2 System: Phase Composition Changes and Properties
  20. The Al–Ca System, Part 1: Experimental Investigation of Phase Equilibria and Crystal Structures
  21. The Al–Ca System, Part 2: Calorimetrie Measurements and Thermodynamic Assessment
  22. Phase Relationships of the Gd-Zn System
  23. Ableitung des Kristallisationspfades in ternären Gusslegierungen
  24. Bildanalyse komplexer Werkstoffgefüge durch Texturanalyse und Korrelation mit den Eigenschaften durch neuronale Netze
  25. Grain Growth in the Nanocrystalline W–Cu and Cu–Pb Composite Powders Prepared by Mechanical Alloying
  26. Toughening and Strengthening Response in Ni3Al-Bonded Titanium Carbide Cermets
  27. Creep Behavior of γ-TiAl-Based Alloys with Fully Lamellar Microstore
  28. Elevated Temperature Deformation of P/M Dispersion - Strengthened Copper and Aluminium
  29. Evolution of the Microstructure during Hot Working of Gamma-Based TiAl Alloys
  30. Interface Motion of β-Silicon Nitride in a Liquid Phase
  31. Internal Friction and Creep of Titanium Aluminides with Different Microstructure
  32. Mitteilungen/Notifications
  33. Personen
  34. Conferences
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