Formation of a hexagonal closed-packed phase in Al0.5CoCrFeNi high entropy alloy

J. Wang; Y. Zhang; S. Z. Niu; W. Y. Wang; H. C. Kou; J. S. Li; S. Q. Wang; E. Beaugnon

doi:10.1557/mrc.2017.109

Formation of a hexagonal closed-packed phase in Al0.5CoCrFeNi high entropy alloy

J. Wang, Y. Zhang, S. Z. Niu, W. Y. Wang, H. C. Kou, J. S. Li, S. Q. Wang, E. Beaugnon

材料学院

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摘要

We report that a hexagonal closed-packed (HCP) phase with high cobalt content precipitates in Al0.5CoCrFeNi high entropy alloy (HEA) after 650 °C/8 h heat-Treatment. The precipitate with the shape of plate is completely located at the interdendritic region. Results of electron diffraction and high resolution transmission electron microscopy show that the HCP phase was transformed from the body-centered cubic phase through a simple shear and the two phase obey an orientation relationship. The thermodynamic stability of Al0.5CoCrFeNi HEA should be carefully reevaluated, especially at the vulnerable temperature.

源语言	英语
页（从-至）	879-884
页数	6
期刊	MRS Communications
卷	7
期	4
DOI	https://doi.org/10.1557/mrc.2017.109
出版状态	已出版 - 1 12月 2017

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title = "Formation of a hexagonal closed-packed phase in Al0.5CoCrFeNi high entropy alloy",

abstract = "We report that a hexagonal closed-packed (HCP) phase with high cobalt content precipitates in Al0.5CoCrFeNi high entropy alloy (HEA) after 650 °C/8 h heat-Treatment. The precipitate with the shape of plate is completely located at the interdendritic region. Results of electron diffraction and high resolution transmission electron microscopy show that the HCP phase was transformed from the body-centered cubic phase through a simple shear and the two phase obey an orientation relationship. The thermodynamic stability of Al0.5CoCrFeNi HEA should be carefully reevaluated, especially at the vulnerable temperature.",

author = "J. Wang and Y. Zhang and Niu, {S. Z.} and Wang, {W. Y.} and Kou, {H. C.} and Li, {J. S.} and Wang, {S. Q.} and E. Beaugnon",

note = "Publisher Copyright: Copyright {\textcopyright} Materials Research Society 2017.",

year = "2017",

month = dec,

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doi = "10.1557/mrc.2017.109",

language = "英语",

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TY - JOUR

T1 - Formation of a hexagonal closed-packed phase in Al0.5CoCrFeNi high entropy alloy

AU - Wang, J.

AU - Zhang, Y.

AU - Niu, S. Z.

AU - Wang, W. Y.

AU - Kou, H. C.

AU - Li, J. S.

AU - Wang, S. Q.

AU - Beaugnon, E.

PY - 2017/12/1

Y1 - 2017/12/1

N2 - We report that a hexagonal closed-packed (HCP) phase with high cobalt content precipitates in Al0.5CoCrFeNi high entropy alloy (HEA) after 650 °C/8 h heat-Treatment. The precipitate with the shape of plate is completely located at the interdendritic region. Results of electron diffraction and high resolution transmission electron microscopy show that the HCP phase was transformed from the body-centered cubic phase through a simple shear and the two phase obey an orientation relationship. The thermodynamic stability of Al0.5CoCrFeNi HEA should be carefully reevaluated, especially at the vulnerable temperature.

AB - We report that a hexagonal closed-packed (HCP) phase with high cobalt content precipitates in Al0.5CoCrFeNi high entropy alloy (HEA) after 650 °C/8 h heat-Treatment. The precipitate with the shape of plate is completely located at the interdendritic region. Results of electron diffraction and high resolution transmission electron microscopy show that the HCP phase was transformed from the body-centered cubic phase through a simple shear and the two phase obey an orientation relationship. The thermodynamic stability of Al0.5CoCrFeNi HEA should be carefully reevaluated, especially at the vulnerable temperature.

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DO - 10.1557/mrc.2017.109

M3 - 文章

AN - SCOPUS:85030839342

SN - 2159-6859

VL - 7

SP - 879

EP - 884

JO - MRS Communications

JF - MRS Communications

IS - 4

ER -

Formation of a hexagonal closed-packed phase in Al0.5CoCrFeNi high entropy alloy

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