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.
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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|Item Type:||Journal Article|
|Keywords:||Magnesium alloy, fracture, ductile, brittle transition, numerical analysis|
|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 13:39|
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