Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 528, Issue 18, Pages 5875-5882Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2011.04.013
Keywords
Extruded magnesium alloys; Mixed mode fracture toughness; Deformation twins; Fracture mechanisms
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Funding
- DRDO
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Fracture toughness under mode I and mixed mode I/III loading were determined for magnesium (Mg) as well as binary Mg-Al and Mg-Zn alloys in as-extruded condition. It was found that in Mg and in Mg-1.25Zn alloy the fracture toughness under mixed mode I/III loading was higher than that under mode I loading whereas in binary Mg-1Al and Mg-3Al alloys it was lower than that under mode I loading. The results have been explained on the basis of the fracture mechanism and the nature of the stress fields ahead of the crack tip under mixed mode I/III loading. (C) 2011 Elsevier B.V. All rights reserved.
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