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Plasticity performance of Al 0.5 CoCrCuFeNi high-entropy alloys under nanoindentation

Journal Article · · International Journal of Iron and Steel Research
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
Research Organization:
Argonne National Laboratory (ANL)
Sponsoring Organization:
National Natural Science Foundation of China (NSFC); USDOE Office of Fossil Energy; National Energy Technology Laboratory (NETL); USDOE Office of Science - Office of Basic Energy Sciences - Scientific User Facilities Division
DOE Contract Number:
AC02-06CH11357
OSTI ID:
1377894
Journal Information:
International Journal of Iron and Steel Research, Journal Name: International Journal of Iron and Steel Research Journal Issue: 4 Vol. 24; ISSN 1006-706X
Country of Publication:
United States
Language:
English

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