Interstitial strengthening of refractory ZrTiHfNb0.5Ta0.5Ox (x = 0.05, 0.1, 0.2) high-entropy alloys

Yiwen Chen; Yunkai Li; Xingwang Cheng; Ziqi Xu; Chao Wu; Bo Cheng; Meng Wang

doi:10.1016/j.matlet.2018.05.123

Interstitial strengthening of refractory ZrTiHfNb_0.5Ta_0.5O_x (x = 0.05, 0.1, 0.2) high-entropy alloys

Yiwen Chen, Yunkai Li^*, Xingwang Cheng, Ziqi Xu, Chao Wu, Bo Cheng, Meng Wang

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

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

52 Citations (Scopus)

Abstract

This paper investigates the microstructure and mechanical properties of ZrTiHfV_0.5Nb_0.5O_x (x = 0.05, 0.1, 0.2) alloys. The ZrTiHfNb_0.5Ta_0.5 alloy has single body-centered cubic (BCC) phase structure. No oxide phases are detected and the diffraction peak (1 1 0) shifts to the left apparently when oxygen is added. Only one set of diffraction spots is observed in the patterns of selected area electron diffraction. The above results confirm that oxygen atoms dissolve into the lattice of ZrTiHfNb_0.5Ta_0.5 alloy. The increase in oxygen content is accompanied by an interstitial strengthening effect at both room temperature and high temperature, but a decrease in compressive ductility. This new method to enhance the mechanical properties of refractory high-entropy alloys is discussed.

Original language	English
Pages (from-to)	145-147
Number of pages	3
Journal	Materials Letters
Volume	228
DOIs	https://doi.org/10.1016/j.matlet.2018.05.123
Publication status	Published - 1 Oct 2018

Keywords

Interstitial strengthening
Mechanical properties
Microstructure
Refractory alloy

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10.1016/j.matlet.2018.05.123

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@article{c21759b1545545af8ca476df03f9a034,

title = "Interstitial strengthening of refractory ZrTiHfNb0.5Ta0.5Ox (x = 0.05, 0.1, 0.2) high-entropy alloys",

abstract = "This paper investigates the microstructure and mechanical properties of ZrTiHfV0.5Nb0.5Ox (x = 0.05, 0.1, 0.2) alloys. The ZrTiHfNb0.5Ta0.5 alloy has single body-centered cubic (BCC) phase structure. No oxide phases are detected and the diffraction peak (1 1 0) shifts to the left apparently when oxygen is added. Only one set of diffraction spots is observed in the patterns of selected area electron diffraction. The above results confirm that oxygen atoms dissolve into the lattice of ZrTiHfNb0.5Ta0.5 alloy. The increase in oxygen content is accompanied by an interstitial strengthening effect at both room temperature and high temperature, but a decrease in compressive ductility. This new method to enhance the mechanical properties of refractory high-entropy alloys is discussed.",

keywords = "Interstitial strengthening, Mechanical properties, Microstructure, Refractory alloy",

author = "Yiwen Chen and Yunkai Li and Xingwang Cheng and Ziqi Xu and Chao Wu and Bo Cheng and Meng Wang",

note = "Publisher Copyright: {\textcopyright} 2018",

year = "2018",

month = oct,

day = "1",

doi = "10.1016/j.matlet.2018.05.123",

language = "English",

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T1 - Interstitial strengthening of refractory ZrTiHfNb0.5Ta0.5Ox (x = 0.05, 0.1, 0.2) high-entropy alloys

AU - Chen, Yiwen

AU - Li, Yunkai

AU - Cheng, Xingwang

AU - Xu, Ziqi

AU - Wu, Chao

AU - Cheng, Bo

AU - Wang, Meng

PY - 2018/10/1

Y1 - 2018/10/1

N2 - This paper investigates the microstructure and mechanical properties of ZrTiHfV0.5Nb0.5Ox (x = 0.05, 0.1, 0.2) alloys. The ZrTiHfNb0.5Ta0.5 alloy has single body-centered cubic (BCC) phase structure. No oxide phases are detected and the diffraction peak (1 1 0) shifts to the left apparently when oxygen is added. Only one set of diffraction spots is observed in the patterns of selected area electron diffraction. The above results confirm that oxygen atoms dissolve into the lattice of ZrTiHfNb0.5Ta0.5 alloy. The increase in oxygen content is accompanied by an interstitial strengthening effect at both room temperature and high temperature, but a decrease in compressive ductility. This new method to enhance the mechanical properties of refractory high-entropy alloys is discussed.

AB - This paper investigates the microstructure and mechanical properties of ZrTiHfV0.5Nb0.5Ox (x = 0.05, 0.1, 0.2) alloys. The ZrTiHfNb0.5Ta0.5 alloy has single body-centered cubic (BCC) phase structure. No oxide phases are detected and the diffraction peak (1 1 0) shifts to the left apparently when oxygen is added. Only one set of diffraction spots is observed in the patterns of selected area electron diffraction. The above results confirm that oxygen atoms dissolve into the lattice of ZrTiHfNb0.5Ta0.5 alloy. The increase in oxygen content is accompanied by an interstitial strengthening effect at both room temperature and high temperature, but a decrease in compressive ductility. This new method to enhance the mechanical properties of refractory high-entropy alloys is discussed.

KW - Interstitial strengthening

KW - Mechanical properties

KW - Microstructure

KW - Refractory alloy

UR - http://www.scopus.com/inward/record.url?scp=85048172145&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2018.05.123

DO - 10.1016/j.matlet.2018.05.123

M3 - Article

AN - SCOPUS:85048172145

SN - 0167-577X

VL - 228

SP - 145

EP - 147

JO - Materials Letters

JF - Materials Letters

ER -

Interstitial strengthening of refractory ZrTiHfNb_0.5Ta_0.5O_x (x = 0.05, 0.1, 0.2) high-entropy alloys

Abstract

Keywords

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Interstitial strengthening of refractory ZrTiHfNb0.5Ta0.5Ox (x = 0.05, 0.1, 0.2) high-entropy alloys

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Interstitial strengthening of refractory ZrTiHfNb_0.5Ta_0.5O_x (x = 0.05, 0.1, 0.2) high-entropy alloys