期刊
SCRIPTA MATERIALIA
卷 69, 期 2, 页码 199-202出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2013.04.004
关键词
Bicrystal; Micropillar; Twin boundary; Fatigue cracking; Schmid factors
类别
资金
- National Natural Science Foundation of China (NSFC) [50890173, 51171194]
- National Basic Research Program of China [2010CB631006]
This study reveals the extraordinary effect of an individual twin boundary (TB) on the mechanical behaviors of Cu bicrystals with a TB parallel to the loading axis whose primary slip vectors are always parallel to the TB plane. With direct experimental evidence, it is shown that there is no strengthening effect of the TB on the bicrystal under microcompression, and the TB is intrinsically strong enough to resist fatigue cracking with the slip bands becoming the preferential cracking sites finally. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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