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Mapping of the Nb–Cr–Ti phase diagram using diffusion multiples

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Veröffentlicht/Copyright: 28. Dezember 2021
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 95 Heft 3

Abstract

A high-efficiency diffusion-multiple approach was employed to map the phase diagram of the Nb–Cr–Ti ternary system which is critical for the design of niobium silicide-based composites. These composites have high potential as a replacement for Ni-base superalloys for jet engine applications. The formation of the Laves phase and alloying with Ti are critical for the high oxidation resistance of the composites and the Nb–Cr–Ti system serves as the base for understanding the Laves phase formation and Ti alloying. Three isothermal sections at 1000, 1150 and 1200°C were constructed from the results obtained from diffusion multiples using scanning electron microscopy, electron probe microanalysis, and electron backscatter diffraction. The results help to define the relative stability of the C15 and C36 Laves phases in the Nb–Cr–Ti ternary system.

Keywords: Nb–Cr–Ti; Diffusion multiple; Laves phase; Phase diagram; Composites; Intermetallics
Dr. Ji-Cheng Zhao, General Electric Company, GE Global Research, P. O. Box 8, K1-MB239, Schenectady, NY 12110, USA, Tel.: +5183874103, Fax: +5183876232

Funding statement: The authors are grateful to A. M. Ritter and B. P. Bewlay for support and/or valuable discussions. We are also thankful for Lizhen Tan for his help in preparing the manuscript and Luke Brewer for EBSD work. This work was supported by the US Air Force Office of Scientific Research (AFOSR) under grant number F49620-99-C-0026 with C. Hartley as a program manager. The views and conclusions contained herein are those of the authors and should not be interpreted as necessarily representing the official policies or endorsement, either expressed or implied, of the AFOSR or the U. S. Government

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Received: 2003-03-27
Accepted: 2003-12-22
Published Online: 2021-12-28

© 2004 Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Frontmatter
  2. Articles BBasic
  3. EMF measurements and thermodynamic description of the Pb–Sn–Zn liquid phase
  4. Thermodynamic properties of liquid Bi–Sn alloys
  5. Ternary thermodynamics by computer-aided Knudsen cell mass spectrometry: fcc solid Fe–Ni–Co alloys
  6. Mapping of the Nb–Cr–Ti phase diagram using diffusion multiples
  7. Photoacoustic properties of sintered NiO
  8. Articles AApplied
  9. Lead-free solder materials: experimental enthalpies of mixing in the Ag–Cu–Sn and Cu–Ni–Sn ternary systems
  10. Correlation between magnetic properties of CoFe single and CoFe/SiO2 multi-layer thin films and their microstructure, texture and internal stress state
  11. Study on mechanical properties of warm-rolled AISI 1015 carbon steel
  12. Creep in ODS copper reinforced with tungsten short fibres – an ODS copper-matrix/tungsten-short-fibre composite
  13. Effect of variation of microstructure on the creep and rupture strengths of a Sn-3.5% Ag lead-free solder alloy
  14. Notifications/Mitteilungen
  15. Personal/Personelles
  16. Information
  17. Press/Presse
  18. Books/Bücher
  19. Conferences/Konferenzen
https://doi.org/10.3139/ijmr-2004-0031
Schlagwörter für diesen Artikel
Nb–Cr–Ti; Diffusion multiple; Laves phase; Phase diagram; Composites; Intermetallics

Artikel in diesem Heft

  1. Frontmatter
  2. Articles BBasic
  3. EMF measurements and thermodynamic description of the Pb–Sn–Zn liquid phase
  4. Thermodynamic properties of liquid Bi–Sn alloys
  5. Ternary thermodynamics by computer-aided Knudsen cell mass spectrometry: fcc solid Fe–Ni–Co alloys
  6. Mapping of the Nb–Cr–Ti phase diagram using diffusion multiples
  7. Photoacoustic properties of sintered NiO
  8. Articles AApplied
  9. Lead-free solder materials: experimental enthalpies of mixing in the Ag–Cu–Sn and Cu–Ni–Sn ternary systems
  10. Correlation between magnetic properties of CoFe single and CoFe/SiO2 multi-layer thin films and their microstructure, texture and internal stress state
  11. Study on mechanical properties of warm-rolled AISI 1015 carbon steel
  12. Creep in ODS copper reinforced with tungsten short fibres – an ODS copper-matrix/tungsten-short-fibre composite
  13. Effect of variation of microstructure on the creep and rupture strengths of a Sn-3.5% Ag lead-free solder alloy
  14. Notifications/Mitteilungen
  15. Personal/Personelles
  16. Information
  17. Press/Presse
  18. Books/Bücher
  19. Conferences/Konferenzen
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