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Experimental and Numerical Investigation on Ductile-brittle Fracture Transition in a Magnesium Alloy

Yan, Cheng, Ma, Wenjie, Burg, Vincent, & Chen, Mingwei (2007) Experimental and Numerical Investigation on Ductile-brittle Fracture Transition in a Magnesium Alloy. Journal of Materials Science, 42(18), pp. 7702-7707.

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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 (3.3x10-4~0.1). 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.

Impact and interest:

5 citations in Scopus
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3 citations in Web of Science®

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338 since deposited on 29 Feb 2008
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ID Code: 12731
Item Type: Journal Article
Keywords: Magnesium alloy, fracture, ductile, brittle transition, numerical analysis
DOI: 10.1007/s10853-007-1674-y
ISSN: 1573-4803
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200) > Metals and Alloy Materials (091207)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 2007 Springer
Copyright Statement: The original publication is available at SpringerLink http://www.springerlink.com
Deposited On: 29 Feb 2008
Last Modified: 29 Feb 2012 23:39

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