Microstructure and mechanical properties of nanoscale Cu/(Ta50Nb25Mo25) multilayers

Li Jiang; Max Powers; Yuchi Cui; Benjamin K. Derby; Amit Misra

doi:10.1016/j.msea.2020.140200

Microstructure and mechanical properties of nanoscale Cu/(Ta50Nb25Mo25) multilayers

Li Jiang
, Max Powers
, Yuchi Cui
, Benjamin K. Derby
, Amit Misra

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

Nanoscale Cu/(Ta50Nb25Mo25) multilayers comprised of medium entropy alloy Ta50Nb25Mo25 and pure Cu are found to exhibit similar length-scale-dependent deformation mechanisms as metallic multilayers with elemental individual layers, i.e., confined layer slip at layer thickness of tens of nanometers and shear localization at several nanometers. The hardness of the nanoscale Cu/(Ta50Nb25Mo25) multilayers is higher as compared to the pure element FCC/BCC multilayers due to the extra solid solution strengthening contribution in the BCC layer. The synergy between the size effect and solid solution strengthening mechanism is discussed. This is an early report of the multi-component multilayers, which serves to provide directions for developing novel multilayer materials.

Original language	English
Article number	140200
Journal	Materials Science and Engineering A
Volume	799
DOIs	https://doi.org/10.1016/j.msea.2020.140200
State	Published - Jan 2 2021
Externally published	Yes

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title = "Microstructure and mechanical properties of nanoscale Cu/(Ta50Nb25Mo25) multilayers",

abstract = "Nanoscale Cu/(Ta50Nb25Mo25) multilayers comprised of medium entropy alloy Ta50Nb25Mo25 and pure Cu are found to exhibit similar length-scale-dependent deformation mechanisms as metallic multilayers with elemental individual layers, i.e., confined layer slip at layer thickness of tens of nanometers and shear localization at several nanometers. The hardness of the nanoscale Cu/(Ta50Nb25Mo25) multilayers is higher as compared to the pure element FCC/BCC multilayers due to the extra solid solution strengthening contribution in the BCC layer. The synergy between the size effect and solid solution strengthening mechanism is discussed. This is an early report of the multi-component multilayers, which serves to provide directions for developing novel multilayer materials.",

author = "Li Jiang and Max Powers and Yuchi Cui and Derby, \{Benjamin K.\} and Amit Misra",

year = "2021",

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doi = "10.1016/j.msea.2020.140200",

language = "English",

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issn = "0921-5093",

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T1 - Microstructure and mechanical properties of nanoscale Cu/(Ta50Nb25Mo25) multilayers

AU - Jiang, Li

AU - Powers, Max

AU - Cui, Yuchi

AU - Derby, Benjamin K.

AU - Misra, Amit

PY - 2021/1/2

Y1 - 2021/1/2

N2 - Nanoscale Cu/(Ta50Nb25Mo25) multilayers comprised of medium entropy alloy Ta50Nb25Mo25 and pure Cu are found to exhibit similar length-scale-dependent deformation mechanisms as metallic multilayers with elemental individual layers, i.e., confined layer slip at layer thickness of tens of nanometers and shear localization at several nanometers. The hardness of the nanoscale Cu/(Ta50Nb25Mo25) multilayers is higher as compared to the pure element FCC/BCC multilayers due to the extra solid solution strengthening contribution in the BCC layer. The synergy between the size effect and solid solution strengthening mechanism is discussed. This is an early report of the multi-component multilayers, which serves to provide directions for developing novel multilayer materials.

AB - Nanoscale Cu/(Ta50Nb25Mo25) multilayers comprised of medium entropy alloy Ta50Nb25Mo25 and pure Cu are found to exhibit similar length-scale-dependent deformation mechanisms as metallic multilayers with elemental individual layers, i.e., confined layer slip at layer thickness of tens of nanometers and shear localization at several nanometers. The hardness of the nanoscale Cu/(Ta50Nb25Mo25) multilayers is higher as compared to the pure element FCC/BCC multilayers due to the extra solid solution strengthening contribution in the BCC layer. The synergy between the size effect and solid solution strengthening mechanism is discussed. This is an early report of the multi-component multilayers, which serves to provide directions for developing novel multilayer materials.

UR - https://www.scopus.com/pages/publications/85090295029

U2 - 10.1016/j.msea.2020.140200

DO - 10.1016/j.msea.2020.140200

M3 - Article

SN - 0921-5093

VL - 799

JO - Materials Science and Engineering A

JF - Materials Science and Engineering A

M1 - 140200

ER -

Microstructure and mechanical properties of nanoscale Cu/(Ta50Nb25Mo25) multilayers

Abstract

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