Hot deformation behavior of as-cast and homogenized Al0.5CoCrFeNi high entropy alloys

Yu Zhang; Jinshan Li; Jun Wang; Sizhe Niu; Hongchao Kou

doi:10.3390/met6110277

Hot deformation behavior of as-cast and homogenized Al_0.5CoCrFeNi high entropy alloys

Yu Zhang, Jinshan Li, Jun Wang, Sizhe Niu, Hongchao Kou

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

28 Scopus citations

Abstract

The hot deformation behavior of as-cast and homogenized Al_0.5CoCrFeNi high entropy alloys (HEAs) during isothermal compression was investigated as a function of temperature and strain rate. Results indicated that flow stress in a homogenized state was always higher than that in an as-cast state under the same deformation conditions. Moreover, the optimum thermo-mechanical processing (TMP) conditions for the hot working of the homogenized state were identified as 945-965 °C and 10^-1.7-10^-1.1 s^-1 and were easier to determine in practice. Constitutive equations, for both states, correlating the flow stress of Al_0.5CoCrFeNi with strain rate and deformation temperature were also determined.

Original language	English
Article number	277
Journal	Metals
Volume	6
Issue number	11
DOIs	https://doi.org/10.3390/met6110277
State	Published - 15 Nov 2016

Keywords

Constitutive equation
Flow stress
High entropy alloy
Homogenization
Processing map

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title = "Hot deformation behavior of as-cast and homogenized Al0.5CoCrFeNi high entropy alloys",

abstract = "The hot deformation behavior of as-cast and homogenized Al0.5CoCrFeNi high entropy alloys (HEAs) during isothermal compression was investigated as a function of temperature and strain rate. Results indicated that flow stress in a homogenized state was always higher than that in an as-cast state under the same deformation conditions. Moreover, the optimum thermo-mechanical processing (TMP) conditions for the hot working of the homogenized state were identified as 945-965 °C and 10-1.7-10-1.1 s-1 and were easier to determine in practice. Constitutive equations, for both states, correlating the flow stress of Al0.5CoCrFeNi with strain rate and deformation temperature were also determined.",

keywords = "Constitutive equation, Flow stress, High entropy alloy, Homogenization, Processing map",

author = "Yu Zhang and Jinshan Li and Jun Wang and Sizhe Niu and Hongchao Kou",

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T1 - Hot deformation behavior of as-cast and homogenized Al0.5CoCrFeNi high entropy alloys

AU - Zhang, Yu

AU - Li, Jinshan

AU - Wang, Jun

AU - Niu, Sizhe

AU - Kou, Hongchao

PY - 2016/11/15

Y1 - 2016/11/15

N2 - The hot deformation behavior of as-cast and homogenized Al0.5CoCrFeNi high entropy alloys (HEAs) during isothermal compression was investigated as a function of temperature and strain rate. Results indicated that flow stress in a homogenized state was always higher than that in an as-cast state under the same deformation conditions. Moreover, the optimum thermo-mechanical processing (TMP) conditions for the hot working of the homogenized state were identified as 945-965 °C and 10-1.7-10-1.1 s-1 and were easier to determine in practice. Constitutive equations, for both states, correlating the flow stress of Al0.5CoCrFeNi with strain rate and deformation temperature were also determined.

AB - The hot deformation behavior of as-cast and homogenized Al0.5CoCrFeNi high entropy alloys (HEAs) during isothermal compression was investigated as a function of temperature and strain rate. Results indicated that flow stress in a homogenized state was always higher than that in an as-cast state under the same deformation conditions. Moreover, the optimum thermo-mechanical processing (TMP) conditions for the hot working of the homogenized state were identified as 945-965 °C and 10-1.7-10-1.1 s-1 and were easier to determine in practice. Constitutive equations, for both states, correlating the flow stress of Al0.5CoCrFeNi with strain rate and deformation temperature were also determined.

KW - Constitutive equation

KW - Flow stress

KW - High entropy alloy

KW - Homogenization

KW - Processing map

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U2 - 10.3390/met6110277

DO - 10.3390/met6110277

M3 - 文章

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JO - Metals

JF - Metals

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ER -

Hot deformation behavior of as-cast and homogenized Al_0.5CoCrFeNi high entropy alloys

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Keywords

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