Microstructure characteristics and mechanical properties of Hf0.5Mo0.5NbTiZr refractory high entropy alloy with Cr addition

X. J. Gao; L. Wang; N. N. Guo; L. S. Luo; G. M. Zhu; C. C. Shi; Y. Q. Su; J. J. Guo

doi:10.1016/j.ijrmhm.2020.105405

Microstructure characteristics and mechanical properties of Hf_0.5Mo_0.5NbTiZr refractory high entropy alloy with Cr addition

X. J. Gao, L. Wang, N. N. Guo^*, L. S. Luo, G. M. Zhu, C. C. Shi, Y. Q. Su, J. J. Guo

^*Corresponding author for this work

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

54 Citations (Scopus)

Abstract

This paper reported the effect of Cr addition on microstructure, phase constitutes and mechanical properties of the Hf_0.5Mo_0.5NbTiZr refractory high-entropy alloy. The Cr_xHf_0.5Mo_0.5NbTiZr (x = 0.1, 0.2, 0.3, 0.4 and 0.5) alloys were composed of one BCC solid solution phase and one CrMoZr-typed Laves phase. This alloy system exhibited the typical dendritic structure after casting. The dendritic structure was refined with the Cr addition. The strength of Cr_xHf_0.5Mo_0.5NbTiZr alloys increased and the plasticity also was improved with small amount addition of Cr elements, the strength continued to increase while the plasticity decreased as the concentration of Cr element increased. The homogenization treatment promoted more formation of Laves phase, which significantly increased the strength.

Original language	English
Article number	105405
Journal	International Journal of Refractory Metals and Hard Materials
Volume	95
DOIs	https://doi.org/10.1016/j.ijrmhm.2020.105405
Publication status	Published - Feb 2021
Externally published	Yes

Keywords

Mechanical properties
Microstructure
Phase
Refractory high entropy alloys

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10.1016/j.ijrmhm.2020.105405

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@article{669d9e8a654441dc92724d8a35a62057,

title = "Microstructure characteristics and mechanical properties of Hf0.5Mo0.5NbTiZr refractory high entropy alloy with Cr addition",

abstract = "This paper reported the effect of Cr addition on microstructure, phase constitutes and mechanical properties of the Hf0.5Mo0.5NbTiZr refractory high-entropy alloy. The CrxHf0.5Mo0.5NbTiZr (x = 0.1, 0.2, 0.3, 0.4 and 0.5) alloys were composed of one BCC solid solution phase and one CrMoZr-typed Laves phase. This alloy system exhibited the typical dendritic structure after casting. The dendritic structure was refined with the Cr addition. The strength of CrxHf0.5Mo0.5NbTiZr alloys increased and the plasticity also was improved with small amount addition of Cr elements, the strength continued to increase while the plasticity decreased as the concentration of Cr element increased. The homogenization treatment promoted more formation of Laves phase, which significantly increased the strength.",

keywords = "Mechanical properties, Microstructure, Phase, Refractory high entropy alloys",

author = "Gao, \{X. J.\} and L. Wang and Guo, \{N. N.\} and Luo, \{L. S.\} and Zhu, \{G. M.\} and Shi, \{C. C.\} and Su, \{Y. Q.\} and Guo, \{J. J.\}",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2021",

month = feb,

doi = "10.1016/j.ijrmhm.2020.105405",

language = "English",

volume = "95",

journal = "International Journal of Refractory Metals and Hard Materials",

issn = "0263-4368",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Microstructure characteristics and mechanical properties of Hf0.5Mo0.5NbTiZr refractory high entropy alloy with Cr addition

AU - Gao, X. J.

AU - Wang, L.

AU - Guo, N. N.

AU - Luo, L. S.

AU - Zhu, G. M.

AU - Shi, C. C.

AU - Su, Y. Q.

AU - Guo, J. J.

PY - 2021/2

Y1 - 2021/2

N2 - This paper reported the effect of Cr addition on microstructure, phase constitutes and mechanical properties of the Hf0.5Mo0.5NbTiZr refractory high-entropy alloy. The CrxHf0.5Mo0.5NbTiZr (x = 0.1, 0.2, 0.3, 0.4 and 0.5) alloys were composed of one BCC solid solution phase and one CrMoZr-typed Laves phase. This alloy system exhibited the typical dendritic structure after casting. The dendritic structure was refined with the Cr addition. The strength of CrxHf0.5Mo0.5NbTiZr alloys increased and the plasticity also was improved with small amount addition of Cr elements, the strength continued to increase while the plasticity decreased as the concentration of Cr element increased. The homogenization treatment promoted more formation of Laves phase, which significantly increased the strength.

AB - This paper reported the effect of Cr addition on microstructure, phase constitutes and mechanical properties of the Hf0.5Mo0.5NbTiZr refractory high-entropy alloy. The CrxHf0.5Mo0.5NbTiZr (x = 0.1, 0.2, 0.3, 0.4 and 0.5) alloys were composed of one BCC solid solution phase and one CrMoZr-typed Laves phase. This alloy system exhibited the typical dendritic structure after casting. The dendritic structure was refined with the Cr addition. The strength of CrxHf0.5Mo0.5NbTiZr alloys increased and the plasticity also was improved with small amount addition of Cr elements, the strength continued to increase while the plasticity decreased as the concentration of Cr element increased. The homogenization treatment promoted more formation of Laves phase, which significantly increased the strength.

KW - Mechanical properties

KW - Microstructure

KW - Phase

KW - Refractory high entropy alloys

UR - https://www.scopus.com/pages/publications/85095783410

U2 - 10.1016/j.ijrmhm.2020.105405

DO - 10.1016/j.ijrmhm.2020.105405

M3 - Article

AN - SCOPUS:85095783410

SN - 0263-4368

VL - 95

JO - International Journal of Refractory Metals and Hard Materials

JF - International Journal of Refractory Metals and Hard Materials

M1 - 105405

ER -

Microstructure characteristics and mechanical properties of Hf_0.5Mo_0.5NbTiZr refractory high entropy alloy with Cr addition

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Keywords

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