Stress contribution of B2 phase in Al0.7CoCrFeNi eutectic high entropy alloy

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In this study, the deformation behavior and strengthening contribution of the FCC phase and B2 phase in Al0.7CoCrFeNi eutectic high entropy alloys (HEAs) were investigated using in-situ neutron diffraction. An FCC matrix phase exhibited a slip-dominant deformation scheme, while twinning hardly contributed to deformation. Applied macroscopic stresses were rarely redistributed to the BCC A2 phase dispersed within the B2 phase, whereas the stress contribution of the B2 phase, which was initially lower than that of the FCC phase, increased significantly with an increase in plastic strain; hence, its contribution to tensile deformation became predominant. This study allows us to postulate a target value of each phase by microstructural tunning to achieve the desired properties of multicomponent phase HEAs.(c) 2022 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE SA
Issue Date
2022-10
Language
English
Article Type
Article
Citation

JOURNAL OF ALLOYS AND COMPOUNDS, v.918

ISSN
0925-8388
DOI
10.1016/j.jallcom.2022.165673
URI
http://hdl.handle.net/10203/297338
Appears in Collection
NE-Journal Papers(저널논문)
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