Startseite Microstructures and thermal stability of metastable-phase precipitates formed in an Al–Cu alloy at 463 K
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Microstructures and thermal stability of metastable-phase precipitates formed in an Al–Cu alloy at 463 K

  • S. K. Son EMAIL logo , M. Takeda und T. Endo
Veröffentlicht/Copyright: 27. Januar 2022
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 96 Heft 4

Abstract

The precipitation behavior in an Al –Cu alloy isothermally annealed at 463 K was studied using Vickers microhardness tests, differential scanning calorimetry (DSC) and transmission electron microscopy (TEM). An additional endothermic peak found in the DSC measurements may be attributed to the θ″-phase, independent of the dissolution of the G. P. (II) and the θ″-phase at the aging temperatures. High-resolution transmission electron microscopy (HRTEM) revealed that the G. P. (I) is formed at a very early stage of isothermal aging, even at 463 K. Comparing the Vickers microhardness and TEM images, it was concluded that the stage at which the G. P. (II) and θ″-phases precipitated simultaneously is mainly responsible for the peak hardness.

Keywords: Al–Cu alloy; DSC; TEM; HV; Precipitation behavior
Sung-Kyu Son Department of Materials Engineering (SEISAN) Yokohama National University c/o Dr. Takeda, Department of Materials Engineering (SEISAN) Faculty of Engineering, Yokohama National University 79-5 Tokiwadai, Hodogaya-ku, Yokohama, 240-8501 Japan Tel.: +81 45 339 3855 Fax: +81 45 339 3855

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Received: 2004-07-28
Accepted: 2004-12-17
Published Online: 2022-01-27

© 2005 Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Frontmatter
  2. Articles Basic
  3. Ferroic materials and anomalous strains
  4. Neutron scattering, a powerful tool in material science considering superalloys as an example
  5. Investigation and modification of carbide sub-systems in the multicomponent Fe–C–Co–Cr–Mo–Si–V–W system
  6. Evolution of texture in pure magnesium during rolling
  7. Grain boundary radiotracer diffusion of 71Ge and 72Ga in Al and Al–Ga alloys
  8. Microstructures and thermal stability of metastable-phase precipitates formed in an Al–Cu alloy at 463 K
  9. Articles Applied
  10. The effect of instationary solidification conditions on the eutectic growth morphology in AlSi alloys
  11. Microstructural development in the heat-affected zone of a laser-cladded steel
  12. Microstructure formation in Ti–Si composite subjected to high temperature gradients
  13. Effect of natural ageing on the performance of pre-ageing to improve bake-hardening response of a twin-roll cast Al–Mg–Si alloy
  14. Residual stress evolution and near-surface microstructure after turning of the nickel-based superalloy Inconel 718
  15. Gefügeentwicklung in unter Druck hochverformten Metallen
  16. Articles History
  17. Alfred Wilm and the beginnings of Duralumin
  18. Notifications/Mitteilungen
  19. Personal/Personelles
  20. Books/Bücher
  21. News/Aktuelles
  22. Conferences/Konferenzen
https://doi.org/10.3139/ijmr-2005-0062
Schlagwörter für diesen Artikel
Al–Cu alloy; DSC; TEM; HV; Precipitation behavior

Artikel in diesem Heft

  1. Frontmatter
  2. Articles Basic
  3. Ferroic materials and anomalous strains
  4. Neutron scattering, a powerful tool in material science considering superalloys as an example
  5. Investigation and modification of carbide sub-systems in the multicomponent Fe–C–Co–Cr–Mo–Si–V–W system
  6. Evolution of texture in pure magnesium during rolling
  7. Grain boundary radiotracer diffusion of 71Ge and 72Ga in Al and Al–Ga alloys
  8. Microstructures and thermal stability of metastable-phase precipitates formed in an Al–Cu alloy at 463 K
  9. Articles Applied
  10. The effect of instationary solidification conditions on the eutectic growth morphology in AlSi alloys
  11. Microstructural development in the heat-affected zone of a laser-cladded steel
  12. Microstructure formation in Ti–Si composite subjected to high temperature gradients
  13. Effect of natural ageing on the performance of pre-ageing to improve bake-hardening response of a twin-roll cast Al–Mg–Si alloy
  14. Residual stress evolution and near-surface microstructure after turning of the nickel-based superalloy Inconel 718
  15. Gefügeentwicklung in unter Druck hochverformten Metallen
  16. Articles History
  17. Alfred Wilm and the beginnings of Duralumin
  18. Notifications/Mitteilungen
  19. Personal/Personelles
  20. Books/Bücher
  21. News/Aktuelles
  22. Conferences/Konferenzen
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