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

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

8 Scopus citations

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
Number of pages	7
Journal	Journal of Iron and Steel Research International
Volume	24
Issue number	4
DOIs	https://doi.org/10.1016/S1006-706X(17)30058-4
State	Published - Apr 2017

Bibliographical note

Publisher Copyright:
© 2017 Central Iron and Steel Research Institute

Keywords

Chaotic behavior
Critical behavior
High-entropy alloys
Nanoindentation

ASJC Scopus subject areas

Mechanics of Materials
Metals and Alloys
Materials Chemistry

Access to Document

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

Cite this

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

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doi = "10.1016/S1006-706X(17)30058-4",

language = "English",

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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.

PY - 2017/4

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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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