Startseite High frequency cycling behaviour of three AZ magnesium alloys – microstructural characterisation
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High frequency cycling behaviour of three AZ magnesium alloys – microstructural characterisation

  • Zuzanka Trojanová , Peter Palček , Mária Chalupová , Pavel Lukáč und Ivana Hlaváčová
Veröffentlicht/Copyright: 29. September 2016
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 107 Heft 10

Abstract

Three Mg–Al–Zn alloys, namely AZ31, AZ63 and AZ91, were subjected to high frequency cyclic loading with the aim of revealing their fatigue behaviour. AZ63 and AZ91 alloys contained discontinuous and continuous precipitates and also the intermetallic compound Mg17Al12. Samples were loaded step by step at increasing stress amplitudes at room temperature. Three characteristics of the cycled samples were investigated: the sample surface, the fatigue fracture surface and the fracture surface after the static fracture of samples. Details of the fatigue and fracture behaviour were examined using scanning electron microscopy. The significant roles of twinning and dislocation movement during the high frequency cycling are discussed. The limited plasticity of alloys estimated during the high frequency cycling is due to a decrease in the moving dislocation density entering into the thermally activated process.

Keywords: Magnesium alloys; High frequency cycling; Fatigue; Fracture; Twinning
*Correspondence address, Prof. RNDr. Zuzanka Trojanová, DrSc., Department of Physics of Materials Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 5, 121 16 Praha 2, Czech Republic, Tel.: +420951551658, Fax: +420951551490, E-mail:

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Received: 2016-03-23
Accepted: 2016-06-17
Published Online: 2016-09-29
Published in Print: 2016-10-14

© 2016, Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Original Contributions
  4. A metastable phase diagram for the dynamic transformation of austenite at temperatures above the Ae3
  5. Experimental investigation of phase equilibria in the Co–Ni–Zr ternary system
  6. Phase equilibria of the Ni–Sb–Zn system at 600 °C
  7. High frequency cycling behaviour of three AZ magnesium alloys – microstructural characterisation
  8. Influence of auxetic foam in quasi-static axial crushing
  9. Electrochemical behaviour of iron and AISI 304 stainless steel in simulated acid rain solution
  10. Mechanochemical synthesis of CaMoO4 nanoparticles: kinetics and characterization
  11. Synthesis and characterization of iron oxide nanoparticles prepared hydrothermally at different reaction temperatures and pH
  12. Influence of SPS parameters on the density and hardness of zinc selenide
  13. Investigation into the kinetic behavior of molten aluminum pressureless infiltration into SiC preforms
  14. Review
  15. Centrifugal casting technique baseline knowledge, applications, and processing parameters: overview
  16. People
  17. Prof. Dr.-Ing. Jürgen Hirsch on the occasion of his 65th birthday
  18. DGM News
  19. DGM News
https://doi.org/10.3139/146.111414
Schlagwörter für diesen Artikel
Magnesium alloys; High frequency cycling; Fatigue; Fracture; Twinning

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Original Contributions
  4. A metastable phase diagram for the dynamic transformation of austenite at temperatures above the Ae3
  5. Experimental investigation of phase equilibria in the Co–Ni–Zr ternary system
  6. Phase equilibria of the Ni–Sb–Zn system at 600 °C
  7. High frequency cycling behaviour of three AZ magnesium alloys – microstructural characterisation
  8. Influence of auxetic foam in quasi-static axial crushing
  9. Electrochemical behaviour of iron and AISI 304 stainless steel in simulated acid rain solution
  10. Mechanochemical synthesis of CaMoO4 nanoparticles: kinetics and characterization
  11. Synthesis and characterization of iron oxide nanoparticles prepared hydrothermally at different reaction temperatures and pH
  12. Influence of SPS parameters on the density and hardness of zinc selenide
  13. Investigation into the kinetic behavior of molten aluminum pressureless infiltration into SiC preforms
  14. Review
  15. Centrifugal casting technique baseline knowledge, applications, and processing parameters: overview
  16. People
  17. Prof. Dr.-Ing. Jürgen Hirsch on the occasion of his 65th birthday
  18. DGM News
  19. DGM News
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