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Thermal Fatigue of Components with Compositional Gradients of Multiphase NiAl-X and Alloy IN 738

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Published/Copyright: December 2, 2021
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 88 Issue 8

Abstract

Following a short evaluation of the advantages and weaknesses of materials based on NiAl for high temperature applications, it is proposed that compositionally graded design of components might be a viable solution to the problem of parts which are subjected to varying loads at both low and high temperature. Following this principle, specimens have been prepared by powder metallurgical techniques with composition and microstructure gradually changing from NiAl reinforced with ternary Laves phases (with Nb and Ta) for the hot section, to superalloy IN 738 for the low temperature section of the component. These specimens have been subjected to thermal fatigue testing between 200 and 1100 °C. Crack initiation and propagation have been observed by SEM and quantitatively evaluated. The advantage of the graded solution with respect to crack arrest is obvious. The different factors governing thermal fatigue behavior of graded components are discussed in detail.

Dedicated to Prof Dr. rer. nat. Volkmar Gerold on the occasion of his 75th birthday

B. Ilschner Laboratoire de Métallurgie Méchanique Ecole Polytechnique Fédérale de Lausanne CH-1015 Lausanne, Switzerland
Knut Barthel Eidgenöss. Materialprüfungs- und Forschungsanstalt, CH-3602 Thun, Switzerland

Funding statement: The authors acknowledge financial support from the Swiss Priority Program on Materials Research (PPM). They would also like to thank Prof. Sauthoff and Ms. Sanders from Max-Planck-Institut Düsseldorf for providing prealloyed NiAl-Ta powder. Helpful discussions with Drs. N. Cherradi, F. Meyer-Olbersleben and F. Rézai-Aria are gratefully appreciated

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Received: 1997-02-20
Published Online: 2021-12-02

© 1997 Carl Hanser Verlag, München

Articles in the same Issue

  1. Frontmatter
  2. Editorial
  3. Aufsätze
  4. Characterization of Aggregates in Very Thin Layers by Small-angle X-ray Scattering Using Grazing Incidence
  5. On the Influence of Dislocations on Precipitation in an Al–Zn–Mg Alloy
  6. Precipitation in Al–Zn–Mg–(Cu, Zr) Alloys
  7. Simultaneous Dissolution and Coarsening of δ′ Precipitates in Al–Li Alloys During DSC Experiments
  8. Deviations from Equilibrium at Remelting Solid/Liquid Interfaces
  9. Constitution of Mn–Al–(Cu, Fe, Ni or C) Alloys Near the Magnetic τ Phase
  10. Early Stages of Decomposition in Al–Ag and Al–Cu
  11. Short-Range Order and the Mode of Slip in Concentrated Cu-based Alloys
  12. Time Dependent Deformation of the Magnesium Alloys AS21 and AZ91 around 100 °C
  13. The Influence of Microstructure on the Mechanical Properties of a Spinodally Decomposed Cu–Ni–Fe Alloy
  14. Search for γ Precipitate Hardenable Quaternary Ll2-Ordered γ′-Intermetallics with Compositions Around Ni3(Al, Si, Ti), (Ni, Co)3(Al, Ti) and (Ni, Co)3(Si, Ti)
  15. Deformation Behaviour of the Single Crystal Superalloy SC16 Under Low Cycle Fatigue Loading
  16. Thermal Fatigue of Components with Compositional Gradients of Multiphase NiAl-X and Alloy IN 738
  17. Mikrostrukturelle Analyse einer betriebsbeanspruchten einkristallinen Flugturbinenschaufel: Bewertung der lokal wirkenden Belastung
  18. Mitteilungen der Deutschen Gesellschaft für Materialkunde e.V.
  19. Personen
  20. Mitteilung aus dem Materialprüfungsamt Nordrhein-Westfalen
  21. Terminkalender
https://doi.org/10.3139/ijmr-1997-0124

Articles in the same Issue

  1. Frontmatter
  2. Editorial
  3. Aufsätze
  4. Characterization of Aggregates in Very Thin Layers by Small-angle X-ray Scattering Using Grazing Incidence
  5. On the Influence of Dislocations on Precipitation in an Al–Zn–Mg Alloy
  6. Precipitation in Al–Zn–Mg–(Cu, Zr) Alloys
  7. Simultaneous Dissolution and Coarsening of δ′ Precipitates in Al–Li Alloys During DSC Experiments
  8. Deviations from Equilibrium at Remelting Solid/Liquid Interfaces
  9. Constitution of Mn–Al–(Cu, Fe, Ni or C) Alloys Near the Magnetic τ Phase
  10. Early Stages of Decomposition in Al–Ag and Al–Cu
  11. Short-Range Order and the Mode of Slip in Concentrated Cu-based Alloys
  12. Time Dependent Deformation of the Magnesium Alloys AS21 and AZ91 around 100 °C
  13. The Influence of Microstructure on the Mechanical Properties of a Spinodally Decomposed Cu–Ni–Fe Alloy
  14. Search for γ Precipitate Hardenable Quaternary Ll2-Ordered γ′-Intermetallics with Compositions Around Ni3(Al, Si, Ti), (Ni, Co)3(Al, Ti) and (Ni, Co)3(Si, Ti)
  15. Deformation Behaviour of the Single Crystal Superalloy SC16 Under Low Cycle Fatigue Loading
  16. Thermal Fatigue of Components with Compositional Gradients of Multiphase NiAl-X and Alloy IN 738
  17. Mikrostrukturelle Analyse einer betriebsbeanspruchten einkristallinen Flugturbinenschaufel: Bewertung der lokal wirkenden Belastung
  18. Mitteilungen der Deutschen Gesellschaft für Materialkunde e.V.
  19. Personen
  20. Mitteilung aus dem Materialprüfungsamt Nordrhein-Westfalen
  21. Terminkalender
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