Comparison of size dependent strengthening mechanisms in Ag/Fe and Ag/Ni multilayers

Jin Li; Y. Chen; S. Xue; H. Wang; X. Zhang

doi:10.1016/j.actamat.2016.05.030

Comparison of size dependent strengthening mechanisms in Ag/Fe and Ag/Ni multilayers

Jin Li, Y. Chen, S. Xue, H. Wang, X. Zhang

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

58 Scopus citations

Abstract

Nanostructured metallic multilayers have attracted substantial attention as they often possess high mechanical strength. Here we report on the microstructure and mechanical strength of sputtered Ag/Fe multilayers with individual layer thicknesses (h) varying from 1 to 200 nm. Phase transformation of Fe from body-centered-cubic (bcc) to face-centered-cubic (fcc) structure occurs when h < 5 nm. Nanotwins form in fine Ag/Fe multilayers. Although modulus mismatch is similar between Ag/Fe and Ag/Ni multilayers, the peak hardnesses of Ag/Fe multilayers is much lower than that of Ag/Ni system. Comparison of mechanical strength of several Ag based multilayers reveals that this drastic difference may arise from chemical stress due to the difference in stacking fault energy of the layer constituents.

Original language	English (US)
Pages (from-to)	154-163
Number of pages	10
Journal	Acta Materialia
Volume	114
DOIs	https://doi.org/10.1016/j.actamat.2016.05.030
State	Published - Aug 1 2016
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2016 Acta Materialia Inc.

Keywords

Multilayer
Nanoindentation
Sputter
Stacking fault energy
Strengthening

Publisher link

10.1016/j.actamat.2016.05.030

Find It

Find It at U of M Libraries

Cite this

@article{833a3f1d438c4db5a68b1ec8e01240f2,

title = "Comparison of size dependent strengthening mechanisms in Ag/Fe and Ag/Ni multilayers",

abstract = "Nanostructured metallic multilayers have attracted substantial attention as they often possess high mechanical strength. Here we report on the microstructure and mechanical strength of sputtered Ag/Fe multilayers with individual layer thicknesses (h) varying from 1 to 200 nm. Phase transformation of Fe from body-centered-cubic (bcc) to face-centered-cubic (fcc) structure occurs when h < 5 nm. Nanotwins form in fine Ag/Fe multilayers. Although modulus mismatch is similar between Ag/Fe and Ag/Ni multilayers, the peak hardnesses of Ag/Fe multilayers is much lower than that of Ag/Ni system. Comparison of mechanical strength of several Ag based multilayers reveals that this drastic difference may arise from chemical stress due to the difference in stacking fault energy of the layer constituents.",

keywords = "Multilayer, Nanoindentation, Sputter, Stacking fault energy, Strengthening",

author = "Jin Li and Y. Chen and S. Xue and H. Wang and X. Zhang",

note = "Publisher Copyright: {\textcopyright} 2016 Acta Materialia Inc.",

year = "2016",

month = aug,

day = "1",

doi = "10.1016/j.actamat.2016.05.030",

language = "English (US)",

volume = "114",

pages = "154--163",

journal = "Acta Materialia",

issn = "1359-6454",

publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Comparison of size dependent strengthening mechanisms in Ag/Fe and Ag/Ni multilayers

AU - Li, Jin

AU - Chen, Y.

AU - Xue, S.

AU - Wang, H.

AU - Zhang, X.

PY - 2016/8/1

Y1 - 2016/8/1

N2 - Nanostructured metallic multilayers have attracted substantial attention as they often possess high mechanical strength. Here we report on the microstructure and mechanical strength of sputtered Ag/Fe multilayers with individual layer thicknesses (h) varying from 1 to 200 nm. Phase transformation of Fe from body-centered-cubic (bcc) to face-centered-cubic (fcc) structure occurs when h < 5 nm. Nanotwins form in fine Ag/Fe multilayers. Although modulus mismatch is similar between Ag/Fe and Ag/Ni multilayers, the peak hardnesses of Ag/Fe multilayers is much lower than that of Ag/Ni system. Comparison of mechanical strength of several Ag based multilayers reveals that this drastic difference may arise from chemical stress due to the difference in stacking fault energy of the layer constituents.

AB - Nanostructured metallic multilayers have attracted substantial attention as they often possess high mechanical strength. Here we report on the microstructure and mechanical strength of sputtered Ag/Fe multilayers with individual layer thicknesses (h) varying from 1 to 200 nm. Phase transformation of Fe from body-centered-cubic (bcc) to face-centered-cubic (fcc) structure occurs when h < 5 nm. Nanotwins form in fine Ag/Fe multilayers. Although modulus mismatch is similar between Ag/Fe and Ag/Ni multilayers, the peak hardnesses of Ag/Fe multilayers is much lower than that of Ag/Ni system. Comparison of mechanical strength of several Ag based multilayers reveals that this drastic difference may arise from chemical stress due to the difference in stacking fault energy of the layer constituents.

KW - Multilayer

KW - Nanoindentation

KW - Sputter

KW - Stacking fault energy

KW - Strengthening

UR - http://www.scopus.com/inward/record.url?scp=84971328641&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84971328641&partnerID=8YFLogxK

U2 - 10.1016/j.actamat.2016.05.030

DO - 10.1016/j.actamat.2016.05.030

M3 - Article

AN - SCOPUS:84971328641

SN - 1359-6454

VL - 114

SP - 154

EP - 163

JO - Acta Materialia

JF - Acta Materialia

ER -

Comparison of size dependent strengthening mechanisms in Ag/Fe and Ag/Ni multilayers

Abstract

Bibliographical note

Keywords

Publisher link

Find It

Other files and links

Fingerprint

Cite this