Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 132, Issue 2-3, Pages 248-252Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2011.12.036
Keywords
Alloys; Mechanical properties; Ductility; Ab initio calculations
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Funding
- The Special Fund for the Author of Excellent Ph.D. Thesis in China [201148]
- The National Key Technologies RD Program [2011BAE22B03]
- The NSF of Jilin Province [201115010]
- The Graduate Innovation Fund [20111045]
- Foundation of Jilin University for Distinguished Young Scholars
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As-cast Mg-3Al-3Sn (AT33) alloy exhibits strong strain hardening ability, which is illustrated by the very high H-c and n values. Decrease in generalized stacking fault (GSF) energies in AT33 alloys by Al and Sn additions facilitates the production of dislocations and activation of deformation twins, causing the accumulation of dislocations at twin boundaries, resulting in a high dislocation density in deformed alloys during tension deformation, which thereby mainly accounts for the strong strain hardening ability. (C) 2011 Elsevier B.V. All rights reserved.
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