TY - JOUR
T1 - Experimental and numerical investigation on ductile-brittle fracture transition in a magnesium alloy
AU - Yan, C.
AU - Ma, W.
AU - Burg, V.
AU - Chen, M. W.
N1 - Funding Information:
Acknowledgements C. Yan wishes to acknowledge the support of an ARC Discovery Project and a Sydney University Sesqui R & D grant.
PY - 2007/9
Y1 - 2007/9
N2 - 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.
AB - 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.
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U2 - 10.1007/s10853-007-1674-y
DO - 10.1007/s10853-007-1674-y
M3 - Article
AN - SCOPUS:34547324231
VL - 42
SP - 7702
EP - 7707
JO - Journal of Materials Science
JF - Journal of Materials Science
SN - 0022-2461
IS - 18
ER -