Suppression of shear banding in high-strength Cu/Mo nanocomposites with hierarchical bicontinuous intertwined structures

Cui, Yuchi; Derby, Benjamin; Li, Nan; Mara, Nathan; Misra, Amit

doi:10.1080/21663831.2018.1431315

Title: Suppression of shear banding in high-strength Cu/Mo nanocomposites with hierarchical bicontinuous intertwined structures

Journal Article · Sun Mar 04 00:00:00 EST 2018 · Materials Research Letters

DOI:https://doi.org/10.1080/21663831.2018.1431315· OSTI ID:1479968

Cui, Yuchi ^[1]; Derby, Benjamin ^[1];

^[2]; Mara, Nathan ^[2]; Misra, Amit ^[1]

Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Materials Science and Engineering
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

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.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE Office of Science (SC). Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: AC52-06NA25396

OSTI ID:: 1479968

Report Number(s):: LA-UR-18-29384

Journal Information:: Materials Research Letters, Vol. 6, Issue 3; ISSN 2166-3831 (Electronic)

Publisher:: Taylor and FrancisCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 40 works

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3-D phase-field simulations of self-organized composite morphologies in physical vapor deposited phase-separating binary alloys Ankit, Kumar; Derby, Benjamin; Raghavan, Rahul Journal of Applied Physics, Vol. 126, Issue 7 https://doi.org/10.1063/1.5110410	journal	August 2019
Microstructure versus size: nano/microscale deformation of solute-strengthening Al alloys via pillar compression tests Yan, Shaohua; Zhou, Haiyang; Qin, Qing H. Materials Research Letters, Vol. 7, Issue 2 https://doi.org/10.1080/21663831.2018.1553802	journal	December 2018
Microstructure versus size: nano/microscale deformation of solute-strengthening Al alloys via pillar compression tests Yan, Shaohua; Zhou, Haiyang; Qin, Qing H. Taylor & Francis https://doi.org/10.6084/m9.figshare.7448663.v1	text	January 2018
Microstructure versus size: nano/microscale deformation of solute-strengthening Al alloys via pillar compression tests Yan, Shaohua; Zhou, Haiyang; Qin, Qing H. Taylor & Francis https://doi.org/10.6084/m9.figshare.7448663	text	January 2018

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