协同提高新型轻质Ti2VZrNb0.5Al0.5高熵合金抗氧化性能与力学性能

Zibing An; Shengcheng Mao; Tao Yang; Yinong Liu; Yanhui Chen; Xiaomeng Yang; Shanshan Liu; Xin Wang; Qingsong Deng; Ze Zhang; Xiaodong Han

doi:10.1007/s40843-022-2045-4

协同提高新型轻质Ti₂VZrNb_0.5Al_0.5高熵合金抗氧化性能与力学性能

Translated title of the contribution: Simultaneously enhanced oxidation resistance and mechanical properties in a novel lightweight Ti₂VZrNb_0.5Al_0.5 high-entropy alloy

Zibing An, Shengcheng Mao, Tao Yang, Yinong Liu, Yanhui Chen, Xiaomeng Yang, Shanshan Liu, Xin Wang, Qingsong Deng, Ze Zhang, Xiaodong Han

Mechanical Engineering

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

2 Citations (Scopus)

Abstract

Enhanced oxidation resistance is a primary demand for the application of refractory high-entropy alloys (RHEAs) at elevated temperatures. In this study, Al was added to a Ti₂VZrNb RHEA to partially substitute Nb to improve its oxidation resistance and mechanical properties. The alloy was found to have an increased oxidation resistance by forming a continuous Al₂O₃ + ZrO₂ oxide protective surface. At the same time, the room-temperature yield strength was also increased by 66% to 1273 MPa via solid solution strengthening. The low atomic mass of Al also helped to reduce the density of the alloy by 8.2% to 5.44 g cm⁻³. This resulted in a high specific yield strength of 234 MPa cm³ g⁻¹ for the alloy. Meanwhile, the Ti₂VZrNb_0.5Al_0.5 alloy also exhibited a high compressive plasticity of >50%. These values are among the best reported so far for RHEAs.

Translated title of the contribution	Simultaneously enhanced oxidation resistance and mechanical properties in a novel lightweight Ti₂VZrNb_0.5Al_0.5 high-entropy alloy
Original language	Chinese (Traditional)
Pages (from-to)	2842-2849
Number of pages	8
Journal	Science China Materials
Volume	65
Issue number	10
DOIs	https://doi.org/10.1007/s40843-022-2045-4
Publication status	Published - Oct 2022

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title = "协同提高新型轻质Ti2VZrNb0.5Al0.5高熵合金抗氧化性能与力学性能",

abstract = "Enhanced oxidation resistance is a primary demand for the application of refractory high-entropy alloys (RHEAs) at elevated temperatures. In this study, Al was added to a Ti2VZrNb RHEA to partially substitute Nb to improve its oxidation resistance and mechanical properties. The alloy was found to have an increased oxidation resistance by forming a continuous Al2O3 + ZrO2 oxide protective surface. At the same time, the room-temperature yield strength was also increased by 66% to 1273 MPa via solid solution strengthening. The low atomic mass of Al also helped to reduce the density of the alloy by 8.2% to 5.44 g cm−3. This resulted in a high specific yield strength of 234 MPa cm3 g−1 for the alloy. Meanwhile, the Ti2VZrNb0.5Al0.5 alloy also exhibited a high compressive plasticity of >50%. These values are among the best reported so far for RHEAs.",

keywords = "high-entropy alloy, mechanical property, oxidation resistance, plasticity, strength",

author = "Zibing An and Shengcheng Mao and Tao Yang and Yinong Liu and Yanhui Chen and Xiaomeng Yang and Shanshan Liu and Xin Wang and Qingsong Deng and Ze Zhang and Xiaodong Han",

year = "2022",

month = oct,

doi = "10.1007/s40843-022-2045-4",

language = "Chinese (Traditional)",

volume = "65",

pages = "2842--2849",

journal = "Science China Materials",

issn = "2095-8226",

publisher = "Science Press (China)",

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TY - JOUR

T1 - 协同提高新型轻质Ti2VZrNb0.5Al0.5高熵合金抗氧化性能与力学性能

AU - An, Zibing

AU - Mao, Shengcheng

AU - Yang, Tao

AU - Liu, Yinong

AU - Chen, Yanhui

AU - Yang, Xiaomeng

AU - Liu, Shanshan

AU - Wang, Xin

AU - Deng, Qingsong

AU - Zhang, Ze

AU - Han, Xiaodong

PY - 2022/10

Y1 - 2022/10

N2 - Enhanced oxidation resistance is a primary demand for the application of refractory high-entropy alloys (RHEAs) at elevated temperatures. In this study, Al was added to a Ti2VZrNb RHEA to partially substitute Nb to improve its oxidation resistance and mechanical properties. The alloy was found to have an increased oxidation resistance by forming a continuous Al2O3 + ZrO2 oxide protective surface. At the same time, the room-temperature yield strength was also increased by 66% to 1273 MPa via solid solution strengthening. The low atomic mass of Al also helped to reduce the density of the alloy by 8.2% to 5.44 g cm−3. This resulted in a high specific yield strength of 234 MPa cm3 g−1 for the alloy. Meanwhile, the Ti2VZrNb0.5Al0.5 alloy also exhibited a high compressive plasticity of >50%. These values are among the best reported so far for RHEAs.

AB - Enhanced oxidation resistance is a primary demand for the application of refractory high-entropy alloys (RHEAs) at elevated temperatures. In this study, Al was added to a Ti2VZrNb RHEA to partially substitute Nb to improve its oxidation resistance and mechanical properties. The alloy was found to have an increased oxidation resistance by forming a continuous Al2O3 + ZrO2 oxide protective surface. At the same time, the room-temperature yield strength was also increased by 66% to 1273 MPa via solid solution strengthening. The low atomic mass of Al also helped to reduce the density of the alloy by 8.2% to 5.44 g cm−3. This resulted in a high specific yield strength of 234 MPa cm3 g−1 for the alloy. Meanwhile, the Ti2VZrNb0.5Al0.5 alloy also exhibited a high compressive plasticity of >50%. These values are among the best reported so far for RHEAs.

KW - high-entropy alloy

KW - mechanical property

KW - oxidation resistance

KW - plasticity

KW - strength

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U2 - 10.1007/s40843-022-2045-4

DO - 10.1007/s40843-022-2045-4

M3 - Article

AN - SCOPUS:85130154912

VL - 65

SP - 2842

EP - 2849

JO - Science China Materials

JF - Science China Materials

SN - 2095-8226

IS - 10

ER -

协同提高新型轻质Ti₂VZrNb_0.5Al_0.5高熵合金抗氧化性能与力学性能

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