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

School of Materials Science and Engineering

Xi'an Jiaotong University

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

121 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	71-76
Number of pages	6
Journal	Scripta Materialia
Volume	139
DOIs	https://doi.org/10.1016/j.scriptamat.2017.06.009
State	Published - Oct 2017

Keywords

Deformation mechanism
High entropy alloy films
Nanotwins
Strain rate sensitivity

Access to Document

10.1016/j.scriptamat.2017.06.009

Cite this

@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",

issn = "1359-6462",

publisher = "Acta Materialia Inc",

}

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 Al_xCoCrFeNi high entropy alloy thin films

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this