Startseite Unconstrained solidification and characterisation of near-eutectic Al–Cu–Ag alloys
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Unconstrained solidification and characterisation of near-eutectic Al–Cu–Ag alloys

  • S. Ebzeeva , E. Nagels und L. Froyen
Veröffentlicht/Copyright: 11. Juni 2013
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 99 Heft 11

Abstract

This study focuses on the microstructure formation in two Al – Cu – Ag alloys with near-eutectic composition on either side of the α(Al)/θ-Al2Cu groove. The alloys solidified equiaxially with two different cooling rates for each composition of alloy. The primary phases formed are α(Al) or θ-Al2Cu, but univariant and invariant eutectic reactions are common. In hypoeutectic samples macrosegregation of the α(Al) phase occurred. The univariant α(Al)/θ-Al2Cu eutectic in these samples is formed by coupled two-phase structures. The univariant eutectic in the samples, which exhibit primary θ-Al2Cu, grew partially competitively due to the α(Al) single phase instability.

It is suggested that the difference in solubility of the segregating element Ag in α(Al) and θ-Al2Cu phases and processing parameters such as cooling rates determine the resulting microstructure.

Keywords: Al – Cu – Ag; Univariant eutectic; Unconstrained solidification; Competitive growth; Coupled zone
* Correspondence address, Ir. S. Ebzeeva, Department of Metallurgy and Materials Engineering, Katholieke Universiteit Leuven, Kasteelpark Arenberg 44 box 2450, B-3001 Heverlee Belgium, Tel.: +32 16 32 12 86, Fax: +32 16 32 19 92, E-mail:

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Received: 2007-11-8
Accepted: 2008-8-27
Published Online: 2013-06-11
Published in Print: 2008-11-01

© 2008, Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Basic
  4. A model to calculate the viscosity of silicate melts
  5. A model to calculate the viscosity of silicate melts
  6. A note on the application of the phase rule
  7. Thermodynamic properties of liquid silver–indium–tin alloys determined from emf measurements
  8. Unconstrained solidification and characterisation of near-eutectic Al–Cu–Ag alloys
  9. Tensile properties of L12 intermetallic foils fabricated by cold rolling
  10. Microstructural control of FeB-inoculated mottled low-alloy white iron by a design of experiments approach
  11. Applied
  12. Dislocation structure and crystallite size distribution in lath martensite determined by X-ray diffraction peak profile analysis
  13. Effect of minor addition of Pb upon interfacial reactions and mechanical properties at Sn-3.0Ag-0.5Cu/Cu and Sn-58Bi/Cu solder joints
  14. Elastic properties of braided ceramic matrix composites
  15. The influence of microstructural characteristics and contaminants on the mechanical properties and fracture topography of low cost Ti6Al4V alloy
  16. Microstructure and room temperature mechanical properties of Hf and Sn-doped Nb-20Ti-5Cr-3Al-18Si alloy
  17. The effect of alloying elements on constrained carbon equilibrium due to a quench and partition process
  18. Hardfacing behavior of Cr–Ni stainless steel with Co-based super alloys
  19. Development of SMD 32.768 kHz tuning fork-type crystals
  20. Notification
  21. DGM News
https://doi.org/10.3139/146.101756
Schlagwörter für diesen Artikel
Al – Cu – Ag; Univariant eutectic; Unconstrained solidification; Competitive growth; Coupled zone

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Basic
  4. A model to calculate the viscosity of silicate melts
  5. A model to calculate the viscosity of silicate melts
  6. A note on the application of the phase rule
  7. Thermodynamic properties of liquid silver–indium–tin alloys determined from emf measurements
  8. Unconstrained solidification and characterisation of near-eutectic Al–Cu–Ag alloys
  9. Tensile properties of L12 intermetallic foils fabricated by cold rolling
  10. Microstructural control of FeB-inoculated mottled low-alloy white iron by a design of experiments approach
  11. Applied
  12. Dislocation structure and crystallite size distribution in lath martensite determined by X-ray diffraction peak profile analysis
  13. Effect of minor addition of Pb upon interfacial reactions and mechanical properties at Sn-3.0Ag-0.5Cu/Cu and Sn-58Bi/Cu solder joints
  14. Elastic properties of braided ceramic matrix composites
  15. The influence of microstructural characteristics and contaminants on the mechanical properties and fracture topography of low cost Ti6Al4V alloy
  16. Microstructure and room temperature mechanical properties of Hf and Sn-doped Nb-20Ti-5Cr-3Al-18Si alloy
  17. The effect of alloying elements on constrained carbon equilibrium due to a quench and partition process
  18. Hardfacing behavior of Cr–Ni stainless steel with Co-based super alloys
  19. Development of SMD 32.768 kHz tuning fork-type crystals
  20. Notification
  21. DGM News
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