期刊
SCRIPTA MATERIALIA
卷 107, 期 -, 页码 5-9出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2015.05.005
关键词
Aluminum; Bicrystal pillar; In situ TEM; MD simulation; Single-armed source
类别
资金
- National Research Foundation of Korea (NRF) [2014R1A4A1003712]
- Korean Research Council for Industrial Science and Technology [SC1100]
- National Research Foundation of Korea [NRF-2011-0029406, NRF-2012K2A1A9054818]
- National Research Council of Science & Technology (NST), Republic of Korea [SC1100] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The effect of inclusion of a grain boundary in nanopillar was studied using Al bicrystal with [3 43]/[13 (17) over bar 14] orientation. Ex situ compression results showed higher strengths in bicrystal pillars than in single crystal pillars, which is explained with respect to the reduced single-armed source length that was confirmed in the in situ TEM tests. Molecular dynamics simulations indicated that the grain boundary can assist in dislocation nucleations without resulting in dislocation pile-up at the boundary. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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