Plasticity performance of Al0.5CoCrCuFeNi high-entropy alloys under nanoindentation

Li-ping Yu; Shu-ying Chen; Jing-li Ren; Yang Ren; Fu-qian Yang; Karin A. Dahmen; Peter K. Liaw

doi:10.1016/S1006-706X(17)30058-4

Plasticity performance of Al_0.5CoCrCuFeNi high-entropy alloys under nanoindentation

Li-ping Yu, Shu-ying Chen, Jing-li Ren^*, Yang Ren, Fu-qian Yang, Karin A. Dahmen, Peter K. Liaw

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

9 Citations (Scopus)

Abstract

The statistical and dynamic behaviors of the displacement-load curves of a high-entropy alloy, Al_0.5 CoCrCuFeNi, were analyzed for the nanoindentation performed at two temperatures. Critical behavior of serrations at room temperature and chaotic flows at 200 °C were detected. These results are attributed to the interaction among a large number of slip bands. For the nanoindentation at room temperature, recurrent partial events between slip bands introduce a hierarchy of length scales, leading to a critical state. For the nanoindentation at 200 °C, there is no spatial interference between two slip bands, which is corresponding to the evolution of separated trajectory of chaotic behavior.

Original language	English
Pages (from-to)	390-396
Journal	Journal of Iron and Steel Research International
Volume	24
Issue number	4
DOIs	https://doi.org/10.1016/S1006-706X(17)30058-4
Publication status	Published - 1 Apr 2017
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

Chaotic behavior
Critical behavior
High-entropy alloys
Nanoindentation

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Cite this

@article{476c58e6fbac486ea4d3ac1ccdbffc5a,

title = "Plasticity performance of Al0.5CoCrCuFeNi high-entropy alloys under nanoindentation",

abstract = "The statistical and dynamic behaviors of the displacement-load curves of a high-entropy alloy, Al0.5 CoCrCuFeNi, were analyzed for the nanoindentation performed at two temperatures. Critical behavior of serrations at room temperature and chaotic flows at 200 °C were detected. These results are attributed to the interaction among a large number of slip bands. For the nanoindentation at room temperature, recurrent partial events between slip bands introduce a hierarchy of length scales, leading to a critical state. For the nanoindentation at 200 °C, there is no spatial interference between two slip bands, which is corresponding to the evolution of separated trajectory of chaotic behavior.",

keywords = "Chaotic behavior, Critical behavior, High-entropy alloys, Nanoindentation",

author = "Li-ping Yu and Shu-ying Chen and Jing-li Ren and Yang Ren and Fu-qian Yang and Dahmen, {Karin A.} and Liaw, {Peter K.}",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

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language = "English",

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TY - JOUR

T1 - Plasticity performance of Al0.5CoCrCuFeNi high-entropy alloys under nanoindentation

AU - Yu, Li-ping

AU - Chen, Shu-ying

AU - Ren, Jing-li

AU - Ren, Yang

AU - Yang, Fu-qian

AU - Dahmen, Karin A.

AU - Liaw, Peter K.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2017/4/1

Y1 - 2017/4/1

N2 - The statistical and dynamic behaviors of the displacement-load curves of a high-entropy alloy, Al0.5 CoCrCuFeNi, were analyzed for the nanoindentation performed at two temperatures. Critical behavior of serrations at room temperature and chaotic flows at 200 °C were detected. These results are attributed to the interaction among a large number of slip bands. For the nanoindentation at room temperature, recurrent partial events between slip bands introduce a hierarchy of length scales, leading to a critical state. For the nanoindentation at 200 °C, there is no spatial interference between two slip bands, which is corresponding to the evolution of separated trajectory of chaotic behavior.

AB - The statistical and dynamic behaviors of the displacement-load curves of a high-entropy alloy, Al0.5 CoCrCuFeNi, were analyzed for the nanoindentation performed at two temperatures. Critical behavior of serrations at room temperature and chaotic flows at 200 °C were detected. These results are attributed to the interaction among a large number of slip bands. For the nanoindentation at room temperature, recurrent partial events between slip bands introduce a hierarchy of length scales, leading to a critical state. For the nanoindentation at 200 °C, there is no spatial interference between two slip bands, which is corresponding to the evolution of separated trajectory of chaotic behavior.

KW - Chaotic behavior

KW - Critical behavior

KW - High-entropy alloys

KW - Nanoindentation

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U2 - 10.1016/S1006-706X(17)30058-4

DO - 10.1016/S1006-706X(17)30058-4

M3 - RGC 21 - Publication in refereed journal

SN - 1006-706X

VL - 24

SP - 390

EP - 396

JO - Journal of Iron and Steel Research International

JF - Journal of Iron and Steel Research International

IS - 4

ER -