期刊
SCRIPTA MATERIALIA
卷 64, 期 10, 页码 974-977出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2011.02.001
关键词
Pillar compression; Radiation-induced strengthening; Helium bubbles; Interface
类别
资金
- US Department of Energy, Office of Science, Office of Basic Energy Sciences, Energy Frontier Research Center (EFRC) [2008LANL1026]
- DOE-BES
Focused-ion-beam machined compression specimens were used to investigate the effect of nanometer-scale helium bubbles on the strength and deformability of sputter-deposited Cu and Cu/Nb multilayers with different layer thickness. The flow strength of Cu films increased by more than a factor of 2 due to helium bubbles but in multilayers, the magnitude of radiation hardening decreased with decreasing layer thickness. When the layer thickness decreases to 2.5 nm, insignificant hardening and no measurable loss in deformability is observed after implantation. Published by Elsevier Ltd. on behalf of Acta Materialia Inc.
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