Microstructure and mechanical properties of multi-phase reinforced Hf-Mo-Nb-Ti-Zr refractory high-entropy alloys

Xujie Gao; Liang Wang; Nana Guo; Liangshun Luo; Guangming Zhu; Chengcheng Shi; Yanqing Su; Jingjie Guo

doi:10.1016/j.ijrmhm.2021.105723

Microstructure and mechanical properties of multi-phase reinforced Hf-Mo-Nb-Ti-Zr refractory high-entropy alloys

Xujie Gao, Liang Wang, Nana Guo^*, Liangshun Luo, Guangming Zhu, Chengcheng Shi, Yanqing Su, Jingjie Guo

^*Corresponding author for this work

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

25 Citations (Scopus)

Abstract

In this paper, Hf-Mo-Nb-Ti-Zr alloy system with single BCC solid solution phase was selected as the matrix alloy. In order to design a new high temperature structural material with excellent comprehensive properties, the multiphase reinforced refractory high entropy alloys was prepared by adding metallic elements of Al or Cr and nonmetallic elements of B, C or Si into Hf-Mo-Nb-Ti-Zr alloys at the same time. The results show that the type and content of newly formed phases are closely related to the mixing enthalpy between alloying elements and the constituent elements of the matrix alloy. This provides a valuable reference for the prediction of phase formation when adding alloying elements to improve the properties of high entropy alloys.

Original language	English
Article number	105723
Journal	International Journal of Refractory Metals and Hard Materials
Volume	102
DOIs	https://doi.org/10.1016/j.ijrmhm.2021.105723
Publication status	Published - Jan 2022
Externally published	Yes

Keywords

High entropy alloys
Microstructure and mechanical properties
Multi-phase strengthening
Multiple alloying

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10.1016/j.ijrmhm.2021.105723

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title = "Microstructure and mechanical properties of multi-phase reinforced Hf-Mo-Nb-Ti-Zr refractory high-entropy alloys",

abstract = "In this paper, Hf-Mo-Nb-Ti-Zr alloy system with single BCC solid solution phase was selected as the matrix alloy. In order to design a new high temperature structural material with excellent comprehensive properties, the multiphase reinforced refractory high entropy alloys was prepared by adding metallic elements of Al or Cr and nonmetallic elements of B, C or Si into Hf-Mo-Nb-Ti-Zr alloys at the same time. The results show that the type and content of newly formed phases are closely related to the mixing enthalpy between alloying elements and the constituent elements of the matrix alloy. This provides a valuable reference for the prediction of phase formation when adding alloying elements to improve the properties of high entropy alloys.",

keywords = "High entropy alloys, Microstructure and mechanical properties, Multi-phase strengthening, Multiple alloying",

author = "Xujie Gao and Liang Wang and Nana Guo and Liangshun Luo and Guangming Zhu and Chengcheng Shi and Yanqing Su and Jingjie Guo",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2022",

month = jan,

doi = "10.1016/j.ijrmhm.2021.105723",

language = "English",

volume = "102",

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

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TY - JOUR

T1 - Microstructure and mechanical properties of multi-phase reinforced Hf-Mo-Nb-Ti-Zr refractory high-entropy alloys

AU - Gao, Xujie

AU - Wang, Liang

AU - Guo, Nana

AU - Luo, Liangshun

AU - Zhu, Guangming

AU - Shi, Chengcheng

AU - Su, Yanqing

AU - Guo, Jingjie

PY - 2022/1

Y1 - 2022/1

N2 - In this paper, Hf-Mo-Nb-Ti-Zr alloy system with single BCC solid solution phase was selected as the matrix alloy. In order to design a new high temperature structural material with excellent comprehensive properties, the multiphase reinforced refractory high entropy alloys was prepared by adding metallic elements of Al or Cr and nonmetallic elements of B, C or Si into Hf-Mo-Nb-Ti-Zr alloys at the same time. The results show that the type and content of newly formed phases are closely related to the mixing enthalpy between alloying elements and the constituent elements of the matrix alloy. This provides a valuable reference for the prediction of phase formation when adding alloying elements to improve the properties of high entropy alloys.

AB - In this paper, Hf-Mo-Nb-Ti-Zr alloy system with single BCC solid solution phase was selected as the matrix alloy. In order to design a new high temperature structural material with excellent comprehensive properties, the multiphase reinforced refractory high entropy alloys was prepared by adding metallic elements of Al or Cr and nonmetallic elements of B, C or Si into Hf-Mo-Nb-Ti-Zr alloys at the same time. The results show that the type and content of newly formed phases are closely related to the mixing enthalpy between alloying elements and the constituent elements of the matrix alloy. This provides a valuable reference for the prediction of phase formation when adding alloying elements to improve the properties of high entropy alloys.

KW - High entropy alloys

KW - Microstructure and mechanical properties

KW - Multi-phase strengthening

KW - Multiple alloying

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U2 - 10.1016/j.ijrmhm.2021.105723

DO - 10.1016/j.ijrmhm.2021.105723

M3 - Article

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SN - 0263-4368

VL - 102

JO - International Journal of Refractory Metals and Hard Materials

JF - International Journal of Refractory Metals and Hard Materials

M1 - 105723

ER -

Microstructure and mechanical properties of multi-phase reinforced Hf-Mo-Nb-Ti-Zr refractory high-entropy alloys

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Keywords

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