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Journal of Materials Science

, Volume 44, Issue 16, pp 4264–4269 | Cite as

Tensile deformation of a Mg–2.54Nd–0.26Zn–0.32Zr alloy at elevated temperature

  • Z. L. NingEmail author
  • G. J. Wang
  • F. Y. Cao
  • J. F. Sun
  • J. F. Du
Article

Abstract

The engineering stress versus engineering strain curves for a Mg–2.54Nd–0.26Zn–0.32Zr cast alloy were measured by Gleeble-1500D thermo-simulation machine in the temperature range of room temperature to 400 °C at initial strain rates of 10−4–10−2 s−1. The effects of strain rate on stress, elongation to facture, and section shrinkage were analyzed. The fractograph morphologies were investigated by using SEM. It was found that strain rate has little effect on engineering stress for the Mg–2.54Nd–0.26Zn–0.32Zr alloy when tested at below 250 °C. When tested at above 250 °C, low strain rate resulted in decreased engineering stress, increased elongation to fracture, and section shrinkage. The fracture mode is cleavage fracture with elongated dimple below 250 °C and changes to typical ductile failure when tested above 250 °C.

Keywords

Cleavage Fracture Engineering Strain Engineering Stress Tensile Deformation Behavior Medium Strain Rate 

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Z. L. Ning
    • 1
    Email author
  • G. J. Wang
    • 2
  • F. Y. Cao
    • 1
  • J. F. Sun
    • 1
  • J. F. Du
    • 1
  1. 1.School of Materials Science and EngineeringHarbin Institute of TechnologyHarbinChina
  2. 2.Northeast Light Alloy Co., LtdHarbinChina

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