期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 132, 期 2-3, 页码 248-252出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2011.12.036
关键词
Alloys; Mechanical properties; Ductility; Ab initio calculations
资金
- 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
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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