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Effect of alloying elements on stage-III work-hardening behaviour of Al–Zn–Mg(–Cu) alloys

  • Ida Westermann , Odd Sture Hopperstad , Knut Marthinsen and Bjørn Holmedal
Published/Copyright: June 11, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 103 Issue 5

Abstract

Four commercial Al–Zn–Mg(–Cu) alloys have been investigated with respect to the age-hardening response and how the stage-III work-hardening behaviour is influenced by the alloying elements. Tensile specimens of the as-cast and homogenized alloys have been exposed to a solution heat treatment and a two-step age-hardening treatment with varying time at the final temperature. The work-hardening parameters obtained by fitting an extended Voce equation to the experimental stress–strain curves have been analysed and discussed. Addition of Cu was found to increase the strength, whereas Mg seemed to be a limiting factor in age-hardening potential. Accelerated precipitation kinetics was observed when the Zn content was increased.

Keywords: Aluminium alloys; Work hardening; Ageing; Precipitation hardening
* Correspondence address Research Scientist Ida Westermann P.O. Box 4760, NO-7465 Trondheim Tel.: +47 97682393 Fax: +47 73597043 E-mail:

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Received: 2010-12-6
Accepted: 2011-12-15
Published Online: 2013-06-11
Published in Print: 2012-05-01

© 2012, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.110727
Keywords for this article
Aluminium alloys; Work hardening; Ageing; Precipitation hardening

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Phase equilibria in the “SnO”–SiO2–“FeO” system in equilibrium with tin–iron alloy and the potential application for electronic scrap recycling
  5. A model to calculate the viscosity of silicate melts
  6. Surface structure of different interstitial austenitic steels after impact wear
  7. Microstructural study of boron-doped Co–Re–Cr alloys by means of transmission electron microscopy and electron energy-loss spectroscopy
  8. Orientation relationship between 14H-LPSO structured X phase and DO3-type (Mg,Zn)3RE phase in an Mg–Gd–Y–Zn–Zr alloy
  9. Microstructural, optical, and dielectric properties of nanocrystalline TiO2 films prepared via ion-assisted magnetron sputtering
  10. An investigation of the microstructure and properties of the explosively welded Gr5–SS304 clad plates for golf heads
  11. Cyclic fibre texture in hot extruded Ni50Mn29Ga21
  12. Development of high-strength pure magnesium and wrought magnesium alloys AZ31, AZ61, and AZ91 processed by hydrostatic extrusion with back pressure
  13. Effect of cerium and aluminium on the hot-deformation behaviour of magnesium
  14. Effect of alloying elements on stage-III work-hardening behaviour of Al–Zn–Mg(–Cu) alloys
  15. Effect of titanium on the as-cast microstructure and impact toughness of hypereutectic high-chromium cast iron
  16. Microstructure and mechanical properties of nanocrystalline WC-particle-reinforced Ti-based composites with nano/ultrafine-grained intermetallic matrix from spark plasma sintering and crystallization of amorphous phase
  17. Plasticity enhancement in centrally confined Zr-based bulk metallic glass
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  21. Immobilization of zinc oxide nanoparticles on cotton fabrics using poly 4-styrenesulfonic acid polyelectrolyte
  22. People
  23. Prof. Dr. rer. nat. Ludwig Schultz
  24. DGM News
  25. DGM News
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