Micromechanical characterization of casting-induced inhomogeneity in an Al0.8CoCrCuFeNi high-entropy alloy

Zhiyuan Liu; Sheng Guo; Xiongjun Liu; Jianchao Ye; Yong Yang; Xun Li Wang; Ling Yang; Ke An; C. T. Liu

doi:10.1016/j.scriptamat.2011.01.020

Micromechanical characterization of casting-induced inhomogeneity in an Al_0.8CoCrCuFeNi high-entropy alloy

Zhiyuan Liu, Sheng Guo, Xiongjun Liu, Jianchao Ye, Yong Yang, Xun Li Wang, Ling Yang, Ke An, C. T. Liu

Materials Engineering

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

66 Scopus citations

Abstract

The microstructural features and micromechanical behavior of individual phases in a cast Al_0.8CoCrCuFeNi high-entropy alloy (HEA) were characterized by high-resolution scanning electron microscopy and micro-compression tests. Use of neutron diffraction enabled the detection of a new phase which was otherwise unobservable by conventional X-ray diffraction. The identified phase constitution agreed well with the compositional analysis and the micro-compression results. The delicate microscale characterization of individual phase provides new insights for the design of novel HEAs with desirable mechanical properties.

Original language	English
Pages (from-to)	868-871
Number of pages	4
Journal	Scripta Materialia
Volume	64
Issue number	9
DOIs	https://doi.org/10.1016/j.scriptamat.2011.01.020
State	Published - May 2011

Funding

This research was supported by the internal funding from HKPU. The Spallation Neutron Source is operated with support from the Division of Scientific User Facilities, Office of Basic Energy Sciences, US Department of Energy, under contract DE-AC05-00OR22725 with UT-Battelle, LLC.

Funders	Funder number
Division of Scientific User Facilities
HKPU
Office of Basic Energy Sciences
US Department of Energy	DE-AC05-00OR22725

Keywords

Compression test
High-entropy alloy
Neutron diffraction
Solidification microstructure

Access to Document

10.1016/j.scriptamat.2011.01.020

Cite this

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title = "Micromechanical characterization of casting-induced inhomogeneity in an Al0.8CoCrCuFeNi high-entropy alloy",

abstract = "The microstructural features and micromechanical behavior of individual phases in a cast Al0.8CoCrCuFeNi high-entropy alloy (HEA) were characterized by high-resolution scanning electron microscopy and micro-compression tests. Use of neutron diffraction enabled the detection of a new phase which was otherwise unobservable by conventional X-ray diffraction. The identified phase constitution agreed well with the compositional analysis and the micro-compression results. The delicate microscale characterization of individual phase provides new insights for the design of novel HEAs with desirable mechanical properties.",

keywords = "Compression test, High-entropy alloy, Neutron diffraction, Solidification microstructure",

author = "Zhiyuan Liu and Sheng Guo and Xiongjun Liu and Jianchao Ye and Yong Yang and Wang, {Xun Li} and Ling Yang and Ke An and Liu, {C. T.}",

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AU - Guo, Sheng

AU - Liu, Xiongjun

AU - Ye, Jianchao

AU - Yang, Yong

AU - Wang, Xun Li

AU - Yang, Ling

AU - An, Ke

AU - Liu, C. T.

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AB - The microstructural features and micromechanical behavior of individual phases in a cast Al0.8CoCrCuFeNi high-entropy alloy (HEA) were characterized by high-resolution scanning electron microscopy and micro-compression tests. Use of neutron diffraction enabled the detection of a new phase which was otherwise unobservable by conventional X-ray diffraction. The identified phase constitution agreed well with the compositional analysis and the micro-compression results. The delicate microscale characterization of individual phase provides new insights for the design of novel HEAs with desirable mechanical properties.

KW - Compression test

KW - High-entropy alloy

KW - Neutron diffraction

KW - Solidification microstructure

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