期刊
PHYSICS LETTERS A
卷 376, 期 4, 页码 529-533出版社
ELSEVIER
DOI: 10.1016/j.physleta.2011.11.025
关键词
Twin boundary; Molecular dynamics simulation; Deformation behavior
资金
- National Natural Science Foundation of China [10902083, 10932008]
The effect of twin spacing and temperature on the deformation behavior of nanotwinned magnesium is investigated using molecular dynamics simulation. The results indicate that there is a pronounced shift in the mechanical behavior of nanotwinned magnesium when twin spacing is smaller than 2.9 nm, and that the yield strength decreases with increasing temperature. The results show that at relatively high temperatures, a strength softening can be observed when twin spacing is larger than 7.8 nm. This study demonstrates that the yield strength is associated with the dislocation storage ability of nanotwinned magnesium and the repulsive force between twin boundaries and dislocations. (C) 2011 Elsevier B.V. All rights reserved.
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