Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 617, Issue -, Pages 277-280Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2014.07.164
Keywords
Magnesium alloys; Texture; Yield asymmetry; Twinning; Schmid factor
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Funding
- World Premier Materials Program - Ministry of Knowledge Economy, Korea [10037928]
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The tension-compression asymmetry in a randomly textured cast magnesium alloy is investigated in terms of its {10-12} twinning characteristics. This {10-12} twinning behavior, which governs the initial stages of deformation, is found to be notably different under tension and compression, consequently resulting in a lower yield strength and higher strain hardening under tension than compression. An interpretation of this behavior is provided through subsequent analysis of the Schmid factor, the grain fraction favorable for twinning, and the dominant twinning mechanism. (C) 2014 Elsevier B.V. All rights reserved.
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