Effects of nanotwins on the mechanical properties of AlxCoCrFeNi high entropy alloy thin films

X. B. Feng; W. Fu; J. Y. Zhang; J. T. Zhao; J. Li; K. Wu; G. Liu; J. Sun

doi:10.1016/j.scriptamat.2017.06.009

Effects of nanotwins on the mechanical properties of Al_xCoCrFeNi high entropy alloy thin films

X. B. Feng
, W. Fu
, J. Y. Zhang
, J. T. Zhao
, J. Li
, K. Wu
, G. Liu
, J. Sun

材料科学与工程学院

Xi'an Jiaotong University

科研成果: 期刊稿件 › 文章 › 同行评审

121 引用（Scopus）

摘要

In this work, we investigate the plastic deformation characteristics (hardness, strain rate sensitivity and activation volume) of nanotwinned Al_xCoCrFeNi (x = 0, 0.1, 0.3) high entropy alloy thin films (HEAFs). The extremely thin nanotwins with thickness of ~ 2 nm soften these HEAFs, but enhance their strain rate sensitivity. We combine the detwinning softening process with conventional strengthening mechanisms to elucidate the mechanical properties of Al_xCoCrFeNi HEAFs. These findings provide deep insights into design strategies to explore the promising high entropy alloys, especially the nanotwinned HEAFs at micro- and nano-scale.

源语言	英语
页（从-至）	71-76
页数	6
期刊	Scripta Materialia
卷	139
DOI	https://doi.org/10.1016/j.scriptamat.2017.06.009
出版状态	已出版 - 10月 2017

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10.1016/j.scriptamat.2017.06.009

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@article{57f95599220a4a4fa58b2477702e0072,

title = "Effects of nanotwins on the mechanical properties of AlxCoCrFeNi high entropy alloy thin films",

abstract = "In this work, we investigate the plastic deformation characteristics (hardness, strain rate sensitivity and activation volume) of nanotwinned AlxCoCrFeNi (x = 0, 0.1, 0.3) high entropy alloy thin films (HEAFs). The extremely thin nanotwins with thickness of \textasciitilde{} 2 nm soften these HEAFs, but enhance their strain rate sensitivity. We combine the detwinning softening process with conventional strengthening mechanisms to elucidate the mechanical properties of AlxCoCrFeNi HEAFs. These findings provide deep insights into design strategies to explore the promising high entropy alloys, especially the nanotwinned HEAFs at micro- and nano-scale.",

keywords = "Deformation mechanism, High entropy alloy films, Nanotwins, Strain rate sensitivity",

author = "Feng, \{X. B.\} and W. Fu and Zhang, \{J. Y.\} and Zhao, \{J. T.\} and J. Li and K. Wu and G. Liu and J. Sun",

note = "Publisher Copyright: {\textcopyright} 2017 Acta Materialia Inc.",

year = "2017",

month = oct,

doi = "10.1016/j.scriptamat.2017.06.009",

language = "英语",

volume = "139",

pages = "71--76",

journal = "Scripta Materialia",

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publisher = "Acta Materialia Inc",

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TY - JOUR

T1 - Effects of nanotwins on the mechanical properties of AlxCoCrFeNi high entropy alloy thin films

AU - Feng, X. B.

AU - Fu, W.

AU - Zhang, J. Y.

AU - Zhao, J. T.

AU - Li, J.

AU - Wu, K.

AU - Liu, G.

AU - Sun, J.

PY - 2017/10

Y1 - 2017/10

N2 - In this work, we investigate the plastic deformation characteristics (hardness, strain rate sensitivity and activation volume) of nanotwinned AlxCoCrFeNi (x = 0, 0.1, 0.3) high entropy alloy thin films (HEAFs). The extremely thin nanotwins with thickness of ~ 2 nm soften these HEAFs, but enhance their strain rate sensitivity. We combine the detwinning softening process with conventional strengthening mechanisms to elucidate the mechanical properties of AlxCoCrFeNi HEAFs. These findings provide deep insights into design strategies to explore the promising high entropy alloys, especially the nanotwinned HEAFs at micro- and nano-scale.

AB - In this work, we investigate the plastic deformation characteristics (hardness, strain rate sensitivity and activation volume) of nanotwinned AlxCoCrFeNi (x = 0, 0.1, 0.3) high entropy alloy thin films (HEAFs). The extremely thin nanotwins with thickness of ~ 2 nm soften these HEAFs, but enhance their strain rate sensitivity. We combine the detwinning softening process with conventional strengthening mechanisms to elucidate the mechanical properties of AlxCoCrFeNi HEAFs. These findings provide deep insights into design strategies to explore the promising high entropy alloys, especially the nanotwinned HEAFs at micro- and nano-scale.

KW - Deformation mechanism

KW - High entropy alloy films

KW - Nanotwins

KW - Strain rate sensitivity

UR - https://www.scopus.com/pages/publications/85020926794

U2 - 10.1016/j.scriptamat.2017.06.009

DO - 10.1016/j.scriptamat.2017.06.009

M3 - 文章

AN - SCOPUS:85020926794

SN - 1359-6462

VL - 139

SP - 71

EP - 76

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Effects of nanotwins on the mechanical properties of AlxCoCrFeNi high entropy alloy thin films

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Effects of nanotwins on the mechanical properties of Al_xCoCrFeNi high entropy alloy thin films