Small-Scale Plastic Deformation of Nanocrystalline High Entropy Alloy

Small-Scale Plastic Deformation of Nanocrystalline High Entropy Alloy

High entropy alloys (HEAs) have attracted widespread interest due to their unique properties at many different length-scales. Here, we report the fabrication of nanocrystalline (NC) Al<sub>0.1</sub>CoCrFeNi high entropy alloy and subsequent small-scale plastic deformation behavior via na...

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Bibliographic Details
Main Authors: Sanghita Mridha, Mageshwari Komarasamy, Sanjit Bhowmick, Rajiv S. Mishra, Sundeep Mukherjee
Format: Article
Language:English
Published: MDPI AG 2018-11-01
Series:Entropy
Subjects:
nanocrystalline materials
high entropy alloy
sputtering
deformation and fracture
strain rate sensitivity
Online Access:https://www.mdpi.com/1099-4300/20/11/889
Description
Summary:High entropy alloys (HEAs) have attracted widespread interest due to their unique properties at many different length-scales. Here, we report the fabrication of nanocrystalline (NC) Al<sub>0.1</sub>CoCrFeNi high entropy alloy and subsequent small-scale plastic deformation behavior via nano-pillar compression tests. Exceptional strength was realized for the NC HEA compared to pure Ni of similar grain sizes. Grain boundary mediated deformation mechanisms led to high strain rate sensitivity of flow stress in the nanocrystalline HEA.
ISSN:1099-4300

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