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Title: 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:
 [1];  [1]; ORCiD logo [2];  [2];  [1]
  1. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Materials Science and Engineering
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (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:
Journal Article: 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. doi: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. doi: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}
}

Journal Article:
Free Publicly Available Full Text
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