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Journal of Materials Science

, Volume 42, Issue 18, pp 7702–7707 | Cite as

Experimental and numerical investigation on ductile-brittle fracture transition in a magnesium alloy

  • C. YanEmail author
  • W. Ma
  • V. Burg
  • M. W. Chen
Article

Abstract

Tensile test on smooth and circumferentially notched specimens, systematic observation of fracture surfaces and large deformation finite element analysis were conducted to understand the deformation and failure behavior of a magnesium alloy (AM60). The plastic deformation is considered to be dominated by twining mediated slip. The tensile properties were not sensitive to the strain rates applied (3.3 × 10−4∼0.1). Corresponding to the same loading level, higher stress triaxiality but lower plastic strain was observed in the specimens with a smaller notch profile radius. Deformation and failure of the magnesium alloy were sensitive to the constraint level and ductile-brittle fracture transition occurred with decreasing the notch profile radius.

Keywords

Magnesium Alloy Brittle Fracture Stress Triaxiality Notch Root Constraint Level 

Notes

Acknowledgements

C. Yan wishes to acknowledge the support of an ARC Discovery Project and a Sydney University Sesqui R & D grant.

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  1. 1.School of Engineering SystemsQueensland University of TechnologyBrisbaneAustralia
  2. 2.Centre for Advanced Materials Technology, School of Aerospace, Mechanical and Mechatronic Engineering, J07The University of SydneySydneyAustralia
  3. 3.Department of Mechanical EngineeringEindhoven University of TechnologyEindhovenThe Netherlands
  4. 4.Institute for Materials ResearchTohoku UniversitySendaiJapan

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