Journal
SCRIPTA MATERIALIA
Volume 177, Issue -, Pages 229-233Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2019.10.041
Keywords
Nanocomposites; He implantation; He retention; Hardness; Bicontinuous
Categories
Funding
- DOE Office of Science Graduate Student Research (SCGSR) program
- National Science Foundation (NSF) through the DMREF program [1533557, 1623051]
- U.S. Department of Energy (DOE) Office of Science [DE-AC52-06NA25396, DE-NA-0003525]
- University of Michigan College of Engineering
- NSF [DMR-0723032]
- Directorate For Engineering [1533557] Funding Source: National Science Foundation
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1623051] Funding Source: National Science Foundation
- Div Of Civil, Mechanical, & Manufact Inn [1533557] Funding Source: National Science Foundation
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This work reports on Helium (He) accumulation in novel metal nanocomposites fabricated by phase separation in three-dimensions. These nanocomposites are dense with semi-coherent interfaces that ultimately influence He implantation response. The effect of film morphology on three aspects of He response is investigated: size and distribution of He precipitates, He retention, and He-induced changes in mechanical properties. Transmission electron microscopy analysis showed that He bubbles agglomerated along the vertical phase boundaries in morphologies with lateral and random domains of Cu and Mo. Nuclear Reaction Analysis (NRA) and nanoindentation results show He retention and hardness is morphology dependent. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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