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Title: Plasticity performance of Al 0.5 CoCrCuFeNi 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

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
National Natural Science Foundation of China (NNSFC); USDOE Office of Fossil Energy (FE); National Energy Technology Laboratory (NETL); USDOE Office of Science - Office of Basic Energy Sciences - Scientific User Facilities Division
OSTI Identifier:
1377894
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: International Journal of Iron and Steel Research; Journal Volume: 24; Journal Issue: 4
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; chaotic behavior; critical behavior; high-entropy alloys; nanoindentation

Citation Formats

Yu, Li-ping, Chen, Shu-ying, Ren, Jing-li, Ren, Yang, Yang, Fu-qian, Dahmen, Karin A., and Liaw, Peter K. Plasticity performance of Al 0.5 CoCrCuFeNi high-entropy alloys under nanoindentation. United States: N. p., 2017. Web. doi:10.1016/S1006-706X(17)30058-4.
Yu, Li-ping, Chen, Shu-ying, Ren, Jing-li, Ren, Yang, Yang, Fu-qian, Dahmen, Karin A., & Liaw, Peter K. Plasticity performance of Al 0.5 CoCrCuFeNi high-entropy alloys under nanoindentation. United States. doi:10.1016/S1006-706X(17)30058-4.
Yu, Li-ping, Chen, Shu-ying, Ren, Jing-li, Ren, Yang, Yang, Fu-qian, Dahmen, Karin A., and Liaw, Peter K. Sat . "Plasticity performance of Al 0.5 CoCrCuFeNi high-entropy alloys under nanoindentation". United States. doi:10.1016/S1006-706X(17)30058-4.
@article{osti_1377894,
title = {Plasticity performance of Al 0.5 CoCrCuFeNi high-entropy alloys under nanoindentation},
author = {Yu, Li-ping and Chen, Shu-ying and Ren, Jing-li and Ren, Yang and Yang, Fu-qian and Dahmen, Karin A. and Liaw, Peter K.},
abstractNote = {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},
doi = {10.1016/S1006-706X(17)30058-4},
journal = {International Journal of Iron and Steel Research},
number = 4,
volume = 24,
place = {United States},
year = {Sat Apr 01 00:00:00 EDT 2017},
month = {Sat Apr 01 00:00:00 EDT 2017}
}