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.
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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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