Berkovich nanoindentation study of 16 nm Cu/Nb ARB nanolaminate: Effect of anisotropy on the surface pileup

Rahul Sahay; Arief S. Budiman; Christian Harito; Fergyanto E. Gunawan; Etienne Navarro; Stéphanie Escoubas; Thomas W. Cornelius; Izzat Aziz; Pooi See Lee; Olivier Thomas; Nagarajan Raghavan

doi:10.1557/s43580-021-00108-y

Berkovich nanoindentation study of 16 nm Cu/Nb ARB nanolaminate: Effect of anisotropy on the surface pileup

Rahul Sahay^*, Arief S. Budiman^*, Christian Harito, Fergyanto E. Gunawan, Etienne Navarro, Stéphanie Escoubas, Thomas W. Cornelius, Izzat Aziz, Pooi See Lee, Olivier Thomas, Nagarajan Raghavan

^*Corresponding author for this work

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

3 Citations (Scopus)

Abstract

Abstract: Nanoindentation is widely used to investigate elastic modulus, hardness and work hardening behaviour of nano- and micro-scale laminates. In this work, 16 nm accumulative roll bonding (ARB) Cu/Nb nanolaminate is used as a test material due to its interfacial anisotropy owing to the presence of contrasting interfaces along rolling (RD) and transverse direction (TD). Nanoindentation was performed along TD as well as RD of ARB Cu/Nb nanolaminate, and then scanning probe microscopy (SPM) data were collected to measure the pileup along RD and TD. Nanolaminate along RD was found to show higher surface pileup than TD which is attributed to crystallographic and interfacial anisotropy resulting in (a) higher yield strength (low plasticity) along TD in comparison to RD and (b) high interfacial sliding in the case of TD resulting in less co-deformation of layers in comparison to RD. The characterization of surface pileup is of significant importance for facilitating the study of anisotropic micro/nanolaminates. Graphic abstract: [Figure not available: see fulltext.]

Original language	English
Pages (from-to)	495-499
Number of pages	5
Journal	MRS Advances
Volume	6
Issue number	19
DOIs	https://doi.org/10.1557/s43580-021-00108-y
Publication status	Published - Aug 2021
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2021, The Author(s), under exclusive licence to The Materials Research Society.

ASJC Scopus Subject Areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1557/s43580-021-00108-y

Cite this

@article{eed50fd551a94eb7bef9d22bd9376065,

title = "Berkovich nanoindentation study of 16 nm Cu/Nb ARB nanolaminate: Effect of anisotropy on the surface pileup",

abstract = "Abstract: Nanoindentation is widely used to investigate elastic modulus, hardness and work hardening behaviour of nano- and micro-scale laminates. In this work, 16 nm accumulative roll bonding (ARB) Cu/Nb nanolaminate is used as a test material due to its interfacial anisotropy owing to the presence of contrasting interfaces along rolling (RD) and transverse direction (TD). Nanoindentation was performed along TD as well as RD of ARB Cu/Nb nanolaminate, and then scanning probe microscopy (SPM) data were collected to measure the pileup along RD and TD. Nanolaminate along RD was found to show higher surface pileup than TD which is attributed to crystallographic and interfacial anisotropy resulting in (a) higher yield strength (low plasticity) along TD in comparison to RD and (b) high interfacial sliding in the case of TD resulting in less co-deformation of layers in comparison to RD. The characterization of surface pileup is of significant importance for facilitating the study of anisotropic micro/nanolaminates. Graphic abstract: [Figure not available: see fulltext.]",

author = "Rahul Sahay and Budiman, {Arief S.} and Christian Harito and Gunawan, {Fergyanto E.} and Etienne Navarro and St{\'e}phanie Escoubas and Cornelius, {Thomas W.} and Izzat Aziz and Lee, {Pooi See} and Olivier Thomas and Nagarajan Raghavan",

note = "Publisher Copyright: {\textcopyright} 2021, The Author(s), under exclusive licence to The Materials Research Society.",

year = "2021",

month = aug,

doi = "10.1557/s43580-021-00108-y",

language = "English",

volume = "6",

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TY - JOUR

T1 - Berkovich nanoindentation study of 16 nm Cu/Nb ARB nanolaminate

T2 - Effect of anisotropy on the surface pileup

AU - Sahay, Rahul

AU - Budiman, Arief S.

AU - Harito, Christian

AU - Gunawan, Fergyanto E.

AU - Navarro, Etienne

AU - Escoubas, Stéphanie

AU - Cornelius, Thomas W.

AU - Aziz, Izzat

AU - Lee, Pooi See

AU - Thomas, Olivier

AU - Raghavan, Nagarajan

PY - 2021/8

Y1 - 2021/8

N2 - Abstract: Nanoindentation is widely used to investigate elastic modulus, hardness and work hardening behaviour of nano- and micro-scale laminates. In this work, 16 nm accumulative roll bonding (ARB) Cu/Nb nanolaminate is used as a test material due to its interfacial anisotropy owing to the presence of contrasting interfaces along rolling (RD) and transverse direction (TD). Nanoindentation was performed along TD as well as RD of ARB Cu/Nb nanolaminate, and then scanning probe microscopy (SPM) data were collected to measure the pileup along RD and TD. Nanolaminate along RD was found to show higher surface pileup than TD which is attributed to crystallographic and interfacial anisotropy resulting in (a) higher yield strength (low plasticity) along TD in comparison to RD and (b) high interfacial sliding in the case of TD resulting in less co-deformation of layers in comparison to RD. The characterization of surface pileup is of significant importance for facilitating the study of anisotropic micro/nanolaminates. Graphic abstract: [Figure not available: see fulltext.]

AB - Abstract: Nanoindentation is widely used to investigate elastic modulus, hardness and work hardening behaviour of nano- and micro-scale laminates. In this work, 16 nm accumulative roll bonding (ARB) Cu/Nb nanolaminate is used as a test material due to its interfacial anisotropy owing to the presence of contrasting interfaces along rolling (RD) and transverse direction (TD). Nanoindentation was performed along TD as well as RD of ARB Cu/Nb nanolaminate, and then scanning probe microscopy (SPM) data were collected to measure the pileup along RD and TD. Nanolaminate along RD was found to show higher surface pileup than TD which is attributed to crystallographic and interfacial anisotropy resulting in (a) higher yield strength (low plasticity) along TD in comparison to RD and (b) high interfacial sliding in the case of TD resulting in less co-deformation of layers in comparison to RD. The characterization of surface pileup is of significant importance for facilitating the study of anisotropic micro/nanolaminates. Graphic abstract: [Figure not available: see fulltext.]

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