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Determination of lower-bound ductility for AZ31 magnesium alloy by use of the bulge specimens

Lapovok, Rimma and Hodgson, Peter 2007, Determination of lower-bound ductility for AZ31 magnesium alloy by use of the bulge specimens, Journal of engineering materials and technology, vol. 129, no. 3, pp. 407-413, doi: 10.1115/1.2744400.

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Title Determination of lower-bound ductility for AZ31 magnesium alloy by use of the bulge specimens
Author(s) Lapovok, Rimma
Hodgson, Peter
Journal name Journal of engineering materials and technology
Volume number 129
Issue number 3
Start page 407
End page 413
Publisher American Society of Mechanical Engineers
Place of publication New York, N.Y.
Publication date 2007-07
ISSN 0094-4289
Summary Despite the high demand for industrial applications of magnesium, the forming technology for wrought magnesium alloys is not fully developed due to the limited ductility and high sensitivity to the processing parameters. The processing window for magnesium alloys could be significantly widened if the lower-bound ductility (LBD) for a range of stresses, temperature, and strain rates was known. LBD is the critical strain at the moment of fracture as a function of stress state and temperature. Measurements of LBD are normally performed by testing in a hyperbaric chamber, which is highly specialized, complex, and rare equipment. In this paper an alternative approach to determine LBD is demonstrated using wrought magnesium alloy AZ31 as an example. A series of compression tests of bulge specimens combined with finite element simulation of the tests were performed. The LBD diagram was then deduced by backward calculation.
Language eng
DOI 10.1115/1.2744400
Field of Research 091399 Mechanical Engineering not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2007, American Society of Mechanical Engineers
Persistent URL http://hdl.handle.net/10536/DRO/DU:30007346

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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