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A model for co-clusters and their strengthening in Al–Cu–Mg based alloys: a comparison with experimental data

Veröffentlicht/Copyright: 11. Juni 2013
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 103 Heft 8

Abstract

A model for the thermodynamics of and strengthening due to Cu–Mg co-clusters in Al–Cu–Mg based alloys is analysed and tested. The formulation uses a single interaction enthalpy between dissimilar alloying elements (e.g. Cu and Mg atoms in an Al–Cu–Mg based alloy) combined with the configurational entropy. The metastable solvus in Al–Cu–Mg based alloys is calculated. Recently published small angle X-ray scattering experiments, 3-dimensional atom probe and yield strength data on these type of alloys support the model. The small angle X-ray scattering and hardness experiments, as well as calorimetry experiments, are sensitive to the main free energy (or enthalpy) changes, which are dominated by Cu–Mg bonds formed by the dimers and the local electron densities related to these bonds. 3 dimensional atom probe is less sensitive to dimers, and will detect agglomeration of dimers to form larger clusters.

Keywords: Co-clusters; Hardening; Dimer; Entropy; Solvus
1 Correspondence address: Prof. Dr. Marco J. Starink, Materials Research Group, Engineering Sciences, University of Southampton, SO17 1BJ Southampton, UK, Tel: +44-2380595094, E-mail:

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Received: 2011-10-24
Accepted: 2012-4-25
Published Online: 2013-06-11
Published in Print: 2012-08-01

© 2012, Carl Hanser Verlag, Munich

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. A new editor for IJMR and other changes
  5. ECAA 2011
  6. Proceeding Papers
  7. A model for co-clusters and their strengthening in Al–Cu–Mg based alloys: a comparison with experimental data
  8. Effect of room temperature storage time on precipitation in Al–Mg–Si(–Cu) alloys with different Mg/Si ratios
  9. Influence of Mg/Si ratio on the clustering kinetics in Al–Mg–Si alloys
  10. Effect of simultaneous deformation and artificial ageing on the mechanical properties of an Al–Mg–Si alloy
  11. Ab-initio modeling of metastable precipitation processes in aluminum 7xxx alloys
  12. The kinetics of clustering in Al–Mg–Si alloys studied by Monte Carlo simulation
  13. Regular Articles
  14. A physically based approach to model the incomplete bainitic transformation in high-Si steels
  15. Impact of interannealing on recrystallization during final annealing in twin-belt cast Al–Fe–Si sheet
  16. Direct preparation of ferrite magnetic material from Jinchuan nickel sulfide concentrate by acid leaching
  17. Effect of La3+ on microwave dielectric properties of (Pb1−xCax)(Fe0.5Nb0.5)O3 (x = 0.5–0.6) ceramics
  18. Thermodynamic properties of liquid copper–antimony–tin alloys determined from e.m.f. measurements
  19. Modelling of metal nano-particle condensation and growth in a reactive atmosphere
  20. Characterization and catalytic behavior of CuO@SiO2 nanocomposites towards NO oxidation and N2O decomposition
  21. Manufacturing process and electrochemical properties of an Mg–Ga–Hg anode sheet
  22. Effect of strain rate and dynamic strain ageing on work-hardening for aluminium alloy AA5182-O
  23. Steady-state creep analysis of a functionally graded thick cylinder subjected to internal pressure and thermal gradient
  24. Residual stress relaxation of hydroxyapatite/316L asymmetrical functionally gradient material fabricated by hot-pressing
  25. Strength and water permeability of concrete containing various types of fly ashes and filler material
  26. Comment to the paper “Re-evaluation of activities of magnesium and zinc components in the magnesium–zinc binary system from very low to high temperature”
  27. DGM News
  28. DGM News
https://doi.org/10.3139/146.110797
Schlagwörter für diesen Artikel
Co-clusters; Hardening; Dimer; Entropy; Solvus

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. A new editor for IJMR and other changes
  5. ECAA 2011
  6. Proceeding Papers
  7. A model for co-clusters and their strengthening in Al–Cu–Mg based alloys: a comparison with experimental data
  8. Effect of room temperature storage time on precipitation in Al–Mg–Si(–Cu) alloys with different Mg/Si ratios
  9. Influence of Mg/Si ratio on the clustering kinetics in Al–Mg–Si alloys
  10. Effect of simultaneous deformation and artificial ageing on the mechanical properties of an Al–Mg–Si alloy
  11. Ab-initio modeling of metastable precipitation processes in aluminum 7xxx alloys
  12. The kinetics of clustering in Al–Mg–Si alloys studied by Monte Carlo simulation
  13. Regular Articles
  14. A physically based approach to model the incomplete bainitic transformation in high-Si steels
  15. Impact of interannealing on recrystallization during final annealing in twin-belt cast Al–Fe–Si sheet
  16. Direct preparation of ferrite magnetic material from Jinchuan nickel sulfide concentrate by acid leaching
  17. Effect of La3+ on microwave dielectric properties of (Pb1−xCax)(Fe0.5Nb0.5)O3 (x = 0.5–0.6) ceramics
  18. Thermodynamic properties of liquid copper–antimony–tin alloys determined from e.m.f. measurements
  19. Modelling of metal nano-particle condensation and growth in a reactive atmosphere
  20. Characterization and catalytic behavior of CuO@SiO2 nanocomposites towards NO oxidation and N2O decomposition
  21. Manufacturing process and electrochemical properties of an Mg–Ga–Hg anode sheet
  22. Effect of strain rate and dynamic strain ageing on work-hardening for aluminium alloy AA5182-O
  23. Steady-state creep analysis of a functionally graded thick cylinder subjected to internal pressure and thermal gradient
  24. Residual stress relaxation of hydroxyapatite/316L asymmetrical functionally gradient material fabricated by hot-pressing
  25. Strength and water permeability of concrete containing various types of fly ashes and filler material
  26. Comment to the paper “Re-evaluation of activities of magnesium and zinc components in the magnesium–zinc binary system from very low to high temperature”
  27. DGM News
  28. DGM News
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