Startseite High temperature tensile behavior of Mg-2Al and Mg-6Al alloys
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High temperature tensile behavior of Mg-2Al and Mg-6Al alloys

  • Jun Qiao , Long Zheng , Jiaxing Ji , Fubo Bian , Min He und Tiangang Niu
Veröffentlicht/Copyright: 18. Dezember 2017
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 109 Heft 1

Abstract

Effects of 2 and 6 wt.% Al additions on the high temperature tensile behavior of Mg were investigated. Elongation-to-failure tensile tests were conducted at four temperatures (300, 350, 400, and 450 °C) and two strain rates (10−2 and 10−3 s−1) to study tensile ductility. Strain-rate-change tensile tests were conducted at the same temperatures over a strain-rate range of 5 × 10−5–2 × 10−2 s−1. The experimental data show that the coarse-grained alloys exhibit elongations of about 100% at 450 °C and 10−3 s−1, and the Mg-6Al alloy presents a significant elongation improvement at 400 and 450 °C. Compared with pure Mg, Al additions of 2 and 6 wt.% effectively reduce the stress exponent, which decreases with increasing Al content. The reduced stress exponents may result from solute-drag creep created by Al atoms released from dissolution of Mg17Al12 phase at high temperatures.

Keywords: Magnesium; Tensile behavior; Creep; Deformation mechanism; Stress exponent
*Correspondence address, Jun Qiao, Ph. D., Department of materials shaping and controlling, University of Science and Technology Liaoning, 185 Qianshan middle road, Anshan 114051, P. R. China, Tel.: +86-412-5929532, Fax: +86-412-5929535, E-mail:

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Received: 2017-06-15
Accepted: 2017-08-16
Published Online: 2017-12-18
Published in Print: 2018-01-09

© 2018, Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Original Contributions
  4. Diffusion behaviour of Pt in platinum aluminide coatings during thermal cycles
  5. Ternary Al–Mo–Y phase diagram and the new phase Al4Mo2Y
  6. Evaluation of the thixoformability of 318.1 aluminum alloy
  7. High temperature tensile behavior of Mg-2Al and Mg-6Al alloys
  8. Anisotropic thermomechanical behavior of AA6082 aluminum alloy Al–Mg–Si–Mn
  9. Significant enhancement of bond strength in the roll bonding process using Pb particles
  10. Nanoindentation characterization of Al-matrix nanocomposites produced via spark plasma sintering
  11. Study and development of NiAl intermetallic coating on hypo-eutectoid steel using highly activated composite granules of the Ni–Al system
  12. Elaboration of a triphasic calcium phosphate and silica nanocomposite for maxillary grafting and deposition on titanium implants
  13. Short Communications
  14. Microstructural effects of isothermal aging on a doped SAC solder alloy
  15. Two-stage synthesis of ultrafine powder of chromium carbide
  16. DGM News
  17. DGM News
https://doi.org/10.3139/146.111581
Schlagwörter für diesen Artikel
Magnesium; Tensile behavior; Creep; Deformation mechanism; Stress exponent

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Original Contributions
  4. Diffusion behaviour of Pt in platinum aluminide coatings during thermal cycles
  5. Ternary Al–Mo–Y phase diagram and the new phase Al4Mo2Y
  6. Evaluation of the thixoformability of 318.1 aluminum alloy
  7. High temperature tensile behavior of Mg-2Al and Mg-6Al alloys
  8. Anisotropic thermomechanical behavior of AA6082 aluminum alloy Al–Mg–Si–Mn
  9. Significant enhancement of bond strength in the roll bonding process using Pb particles
  10. Nanoindentation characterization of Al-matrix nanocomposites produced via spark plasma sintering
  11. Study and development of NiAl intermetallic coating on hypo-eutectoid steel using highly activated composite granules of the Ni–Al system
  12. Elaboration of a triphasic calcium phosphate and silica nanocomposite for maxillary grafting and deposition on titanium implants
  13. Short Communications
  14. Microstructural effects of isothermal aging on a doped SAC solder alloy
  15. Two-stage synthesis of ultrafine powder of chromium carbide
  16. DGM News
  17. DGM News
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