Startseite Dispersion strengthening of copper by internal oxidation of rapidly solidified Cu–RE alloys
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Dispersion strengthening of copper by internal oxidation of rapidly solidified Cu–RE alloys

Part I: The microstructure and stability of rapidly solidified ribbons
  • Ivan Anzel EMAIL logo , Albert C. Kneissl , Alojz Krizman und Rebeka Rudolf
Veröffentlicht/Copyright: 4. Januar 2022
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 94 Heft 2

Abstract

Rapidly solidified ribbons of Cu-0.5-at.% Er and Cu-0.5 at.% Yb alloys have been prepared by melt spinning. An overall assessment of the ribbons has shown that up to three microstructural regions are distinguished: fine equiaxed grains, zone with a columnar structure and coarse equiaxed grains. Their number, type and height are controlled by wheel velocity. The growth behavior of dispersed intermetallic particles depends on the obtained microstructure, i. e., on the ribbon thickness. The large particles in thin ribbons coarsened by bulk diffusion, controlled by the diffusivity of the rare earth (RE) elements, and grow with the cube root of time at all temperatures. In thick ribbons with a high fraction of the coarse equiaxed zone, the coarsening takes place much more rapidly along the grain boundaries, which became a dominant transport mechanism.

Keywords: Cu – rare earth alloys; Rapid solidification; Ostwald ripening
Prof. Dr. Ivan Anzel Faculty of Mechanical Engineering University of Maribor Smetanova 17, SI-2000 Maribor, Slovenia Tel.: +38622207861 Fax: +386222079 90

  1. For financial support the authors are grateful to the Slovenian Ministry for Education, Science and Sport and to the Austrian Ministry for Education and Science.

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Received: 2002-09-10
Published Online: 2022-01-04

© 2003 Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Frontmatter
  2. Articles/Aufsätze
  3. Formation of nanoscale particles and their effect on properties of alloys
  4. The application of gallium as a liquid metal lubricant
  5. Phase diagram of the Al–Cu–Fe quasicrystal-forming alloy system
  6. Phase diagram of the Al–Cu–Fe quasicrystal-forming alloy system
  7. Phase diagram of the Al–Cu–Fe quasicrystal-forming alloy system
  8. The Zn-rich corner of the Zn–Fe–Co system at 450°C
  9. Study on the thermal fatigue of NiTi wires
  10. Dispersion strengthening of copper by internal oxidation of rapidly solidified Cu–RE alloys
  11. High-temperature oxidation of Cu–Ti-based rapidly solidified alloys
  12. Simulation of solidification and heat treatment of nickel-base superalloy SC16
  13. Contribution of SiC particles to the formation of the structure of Mg-3 wt.% RE cast composites
  14. Notifications/Mitteilungen
  15. Personal/Personelles
  16. Books/Bücher
  17. Gesellschaftsnachricht
  18. DGM Conferences
https://doi.org/10.3139/ijmr-2003-0025
Schlagwörter für diesen Artikel
Cu – rare earth alloys; Rapid solidification; Ostwald ripening

Artikel in diesem Heft

  1. Frontmatter
  2. Articles/Aufsätze
  3. Formation of nanoscale particles and their effect on properties of alloys
  4. The application of gallium as a liquid metal lubricant
  5. Phase diagram of the Al–Cu–Fe quasicrystal-forming alloy system
  6. Phase diagram of the Al–Cu–Fe quasicrystal-forming alloy system
  7. Phase diagram of the Al–Cu–Fe quasicrystal-forming alloy system
  8. The Zn-rich corner of the Zn–Fe–Co system at 450°C
  9. Study on the thermal fatigue of NiTi wires
  10. Dispersion strengthening of copper by internal oxidation of rapidly solidified Cu–RE alloys
  11. High-temperature oxidation of Cu–Ti-based rapidly solidified alloys
  12. Simulation of solidification and heat treatment of nickel-base superalloy SC16
  13. Contribution of SiC particles to the formation of the structure of Mg-3 wt.% RE cast composites
  14. Notifications/Mitteilungen
  15. Personal/Personelles
  16. Books/Bücher
  17. Gesellschaftsnachricht
  18. DGM Conferences
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