期刊
SCRIPTA MATERIALIA
卷 102, 期 -, 页码 27-30出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2015.02.006
关键词
Size effect; Plasticity; Single crystals; Stress scaling
Based on the statistics of both the stress and strain of a plastic event, the well known size-effect in strength can be linked to a crystal's critical stress distribution and the universal scaling exponent of intermittent plasticity. We successfully test these hypotheses with small-scale deformation experiments as a function of diameter and aspect ratio, and find that the latter affects the material's strength in a way that gives direct insight into the underlying critical stress distribution of the deforming volume. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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