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

C. Yan; W. Ma; V. Burg; M. W. Chen

doi:10.1007/s10853-007-1674-y

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

C. Yan, W. Ma, V. Burg, M. W. Chen

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

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.

Original language	English
Pages (from-to)	7702-7707
Number of pages	6
Journal	Journal of Materials Science
Volume	42
Issue number	18
DOIs	https://doi.org/10.1007/s10853-007-1674-y
Publication status	Published - 2007 Sep

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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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 (3.3 × 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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note = "Funding Information: 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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AU - Yan, C.

AU - Ma, W.

AU - Burg, V.

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

Abstract

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