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Microstructure and mechanical properties of differently extruded AZ31 magnesium alloy

  • Michael Huppmann and Walter Reimers
Published/Copyright: May 31, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 101 Issue 10

Abstract

Profiles of the magnesium alloy AZ31 were produced by conventional indirect extrusion and by indirect extrusion into counterpressure with variations of the billet temperature TB from 200 °C up to 350 °C. Microstructural examination by optical microscopy showed that for extrusion trials carried out with billet temperatures TB ≤ 250 °C fine dynamically recrystallized grains are found while elongated grains of the former cast structure remain. Above TB ≥ 300 °C most grains show higher dynamic recrystallization kinetics and additional static recrystallization and increase to grain sizes of d = 30 – 50 μm. At TB ≤ 250 °C the typical extrusion fiber texture is found, at TB ≥ 300 °C a double fiber texture is formed due to static recrystallization. The results of the quasistatic mechanical tests are due to these differences in the microstructure.

Keywords: Magnesium; Extrusion; Microstructure; Texture; Mechanical properties
* Correspondence address, Prof. Dr. Walter Reimers TU Berlin, Metallische Werkstoffe, Sekr. BH 18 Ernst-Reuter-Platz 1, 10587 Berlin, Germany Tel.: +49 30 314 22417 Fax: +49 30 314 22996 E-Mail:

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Received: 2009-6-23
Accepted: 2010-7-30
Published Online: 2013-05-31
Published in Print: 2010-10-01

© 2010, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.110410
Keywords for this article
Magnesium; Extrusion; Microstructure; Texture; Mechanical properties

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Editorial October 2010
  5. History
  6. Interactions between dislocations and interfaces – consequences for metal and ceramic plasticity
  7. Deformation mechanisms in yttria-stabilized cubic zirconia single crystals
  8. Basic
  9. Superplasticity in nanocrystalline ceramics: pure grain boundary phenomena or not?
  10. Thermodynamic assessment of the Mn–Ni–O system
  11. Assessment of niobium segregation energy in migrating ferrite/austenite phase interfaces
  12. In-situ synthesis and characterization of Al2O3 nanostructured whiskers in Ti–Al intermetallic matrix composites
  13. Texture, structure and properties of Ni-based binary alloy tapes for HTS substrates
  14. Microstructure, texture, grain boundary characteristics and mechanical properties of a cold rolled and annealed ferrite–bainite dual phase steel
  15. Applied
  16. Microstructure and mechanical properties of differently extruded AZ31 magnesium alloy
  17. The role of talc in preparing steatite slurries suitable for spray-drying
  18. Preparation and evaluation of chitosan-gelatin composite scaffolds modified with chondroitin-6-sulphate
  19. Influence of volume fraction of martensite on the work hardening behaviour of two dual-phase steels with high and low silicon contents
  20. Controlled synthesis of prussian blue nanoparticles based on polymyxin B/sodium bis(2-ethylhexyl)sulfosuccinate/water/isooctane reverse microemulsion for glucose biosensors
  21. The melting diagram of the Ti–Dy–Sn system below 40 at.% Sn
  22. Preparation and photocatalytic properties of TiO2 film produced via spin coating
  23. DGM News
  24. Personal
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