Suppression of shear banding in high-strength Cu/Mo nanocomposites with hierarchical bicontinuous intertwined structures
Abstract
The microstructures and mechanical behavior of high-temperature co-sputtered Cu/Mo nanocomposites were investigated and compared with Cu/Mo multilayers. The co-sputtered nanocomposites present hierarchical architectures with bicontinuous intertwined Cu/Mo phases, the feature size of which can be tuned from 35 to 3 nm by changing the deposition parameters. After indentation, shear bands were found in the multilayers but not in the hierarchical nanocomposites. In situ nanocompression tests in Transmission electron microscopy showed that the hierarchical nanocomposite containing fine-length-scale intertwined Cu/Mo phases has very high strength. Finally, the hierarchical structure is proposed to play an important role in suppressing shear band formation.
- Authors:
-
[2];
- Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Materials Science and Engineering
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC). Basic Energy Sciences (BES) (SC-22)
- OSTI Identifier:
- 1479968
- Report Number(s):
- LA-UR-18-29384
Journal ID: ISSN 2166-3831 (Electronic)
- Grant/Contract Number:
- AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Materials Research Letters
- Additional Journal Information:
- Journal Volume: 6; Journal Issue: 3; Journal ID: ISSN 2166-3831 (Electronic)
- Publisher:
- Taylor and Francis
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Metallic nanocomposites; co-sputtering; deformability; nanomechanics
Citation Formats
Cui, Yuchi, Derby, Benjamin, Li, Nan, Mara, Nathan, and Misra, Amit. Suppression of shear banding in high-strength Cu/Mo nanocomposites with hierarchical bicontinuous intertwined structures. United States: N. p., 2018.
Web. doi:10.1080/21663831.2018.1431315.
Cui, Yuchi, Derby, Benjamin, Li, Nan, Mara, Nathan, & Misra, Amit. Suppression of shear banding in high-strength Cu/Mo nanocomposites with hierarchical bicontinuous intertwined structures. United States. https://doi.org/10.1080/21663831.2018.1431315
Cui, Yuchi, Derby, Benjamin, Li, Nan, Mara, Nathan, and Misra, Amit. Sun .
"Suppression of shear banding in high-strength Cu/Mo nanocomposites with hierarchical bicontinuous intertwined structures". United States. https://doi.org/10.1080/21663831.2018.1431315. https://www.osti.gov/servlets/purl/1479968.
@article{osti_1479968,
title = {Suppression of shear banding in high-strength Cu/Mo nanocomposites with hierarchical bicontinuous intertwined structures},
author = {Cui, Yuchi and Derby, Benjamin and Li, Nan and Mara, Nathan and Misra, Amit},
abstractNote = {The microstructures and mechanical behavior of high-temperature co-sputtered Cu/Mo nanocomposites were investigated and compared with Cu/Mo multilayers. The co-sputtered nanocomposites present hierarchical architectures with bicontinuous intertwined Cu/Mo phases, the feature size of which can be tuned from 35 to 3 nm by changing the deposition parameters. After indentation, shear bands were found in the multilayers but not in the hierarchical nanocomposites. In situ nanocompression tests in Transmission electron microscopy showed that the hierarchical nanocomposite containing fine-length-scale intertwined Cu/Mo phases has very high strength. Finally, the hierarchical structure is proposed to play an important role in suppressing shear band formation.},
doi = {10.1080/21663831.2018.1431315},
journal = {Materials Research Letters},
number = 3,
volume = 6,
place = {United States},
year = {Sun Mar 04 00:00:00 EST 2018},
month = {Sun Mar 04 00:00:00 EST 2018}
}
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Figures / Tables:
Figure 1: (a) TEM image of the Cu/Mo multilayer; inset: SADP of the circled area. (b) Atomic images showing Cu layer having BCC (left) and FCC (right) structures. (c) STEM image of indented multilayer. (d) STEM images of the top region of a multilayer nanopillar after the compression test. (e)more »
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Works referencing / citing this record:
3-D phase-field simulations of self-organized composite morphologies in physical vapor deposited phase-separating binary alloys
journal, August 2019
- Ankit, Kumar; Derby, Benjamin; Raghavan, Rahul
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Microstructure versus size: nano/microscale deformation of solute-strengthening Al alloys via pillar compression tests
journal, December 2018
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Microstructure versus size: nano/microscale deformation of solute-strengthening Al alloys via pillar compression tests
text, January 2018
- Yan, Shaohua; Zhou, Haiyang; Qin, Qing H.
- Taylor & Francis
Figures / Tables found in this record:
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