Effects of Zr Content on the Microstructure and Performance of TiMoNbZrx High-Entropy Alloys

TiMoNbZrx refractory high-entropy alloys were prepared by vacuum arc melting, and the influence of the Zr alloying element and its content on the phases, microstructure, mechanical properties, and wear resistance of TiMoNbZrx alloys was explored. It was...

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Main Authors:	Gengbiao Chen, Yi Xiao, Xixi Ji, Xiubing Liang, Yongle Hu, Zhihai Cai, Jian Liu, Yonggang Tong
Format:	Article
Language:	English
Published:	MDPI AG 2021-08-01
Series:	Metals
Subjects:	high-entropy alloy microstructure mechanical properties processing
Online Access:	https://www.mdpi.com/2075-4701/11/8/1315

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spelling	doaj-36175746fbb24e1abba4477ffdd5a5722021-08-26T14:04:37ZengMDPI AGMetals2075-47012021-08-01111315131510.3390/met11081315Effects of Zr Content on the Microstructure and Performance of TiMoNbZr<sub>x</sub> High-Entropy AlloysGengbiao Chen0Yi Xiao1Xixi Ji2Xiubing Liang3Yongle Hu4Zhihai Cai5Jian Liu6Yonggang Tong7College of Automobile and Mechanical Engineering, Changsha University of Science and Technology, Changsha 410114, ChinaCollege of Automobile and Mechanical Engineering, Changsha University of Science and Technology, Changsha 410114, ChinaCollege of Automobile and Mechanical Engineering, Changsha University of Science and Technology, Changsha 410114, ChinaNational Institute of Defense Technology Innovation, Academy of Military Sciences PLA China, Beijing 100072, ChinaCollege of Automobile and Mechanical Engineering, Changsha University of Science and Technology, Changsha 410114, ChinaNational Key Laboratory for Remanufacturing, Army Academy of Armored Forces, Beijing 100072, ChinaNational Key Laboratory for Remanufacturing, Army Academy of Armored Forces, Beijing 100072, ChinaCollege of Automobile and Mechanical Engineering, Changsha University of Science and Technology, Changsha 410114, ChinaTiMoNbZr<sub>x</sub> refractory high-entropy alloys were prepared by vacuum arc melting, and the influence of the Zr alloying element and its content on the phases, microstructure, mechanical properties, and wear resistance of TiMoNbZr<sub>x</sub> alloys was explored. It was found that the alloys after Zr addition were composed of a single BCC phase. Upon increasing the Zr content, the grain size of the as-cast alloy decreased first and then increased, and TiMoNbZr<sub>0.5</sub> exhibited the smallest grain size. Adding an appropriate amount of Zr increased the strength and hardness of the alloys. TiMoNbZr<sub>0.5</sub> exhibited the best wear resistance, with a friction coefficient of about 0.33. It also displayed the widest wear scar, the shallowest depth, and the greatest degree of wear on the grinding ball because of the formation of an oxide film during wear.https://www.mdpi.com/2075-4701/11/8/1315high-entropy alloymicrostructuremechanical propertiesprocessing
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Gengbiao Chen Yi Xiao Xixi Ji Xiubing Liang Yongle Hu Zhihai Cai Jian Liu Yonggang Tong
spellingShingle	Gengbiao Chen Yi Xiao Xixi Ji Xiubing Liang Yongle Hu Zhihai Cai Jian Liu Yonggang Tong Effects of Zr Content on the Microstructure and Performance of TiMoNbZr<sub>x</sub> High-Entropy Alloys Metals high-entropy alloy microstructure mechanical properties processing
author_facet	Gengbiao Chen Yi Xiao Xixi Ji Xiubing Liang Yongle Hu Zhihai Cai Jian Liu Yonggang Tong
author_sort	Gengbiao Chen
title	Effects of Zr Content on the Microstructure and Performance of TiMoNbZr<sub>x</sub> High-Entropy Alloys
title_short	Effects of Zr Content on the Microstructure and Performance of TiMoNbZr<sub>x</sub> High-Entropy Alloys
title_full	Effects of Zr Content on the Microstructure and Performance of TiMoNbZr<sub>x</sub> High-Entropy Alloys
title_fullStr	Effects of Zr Content on the Microstructure and Performance of TiMoNbZr<sub>x</sub> High-Entropy Alloys
title_full_unstemmed	Effects of Zr Content on the Microstructure and Performance of TiMoNbZr<sub>x</sub> High-Entropy Alloys
title_sort	effects of zr content on the microstructure and performance of timonbzr<sub>x</sub> high-entropy alloys
publisher	MDPI AG
series	Metals
issn	2075-4701
publishDate	2021-08-01
description	TiMoNbZr<sub>x</sub> refractory high-entropy alloys were prepared by vacuum arc melting, and the influence of the Zr alloying element and its content on the phases, microstructure, mechanical properties, and wear resistance of TiMoNbZr<sub>x</sub> alloys was explored. It was found that the alloys after Zr addition were composed of a single BCC phase. Upon increasing the Zr content, the grain size of the as-cast alloy decreased first and then increased, and TiMoNbZr<sub>0.5</sub> exhibited the smallest grain size. Adding an appropriate amount of Zr increased the strength and hardness of the alloys. TiMoNbZr<sub>0.5</sub> exhibited the best wear resistance, with a friction coefficient of about 0.33. It also displayed the widest wear scar, the shallowest depth, and the greatest degree of wear on the grinding ball because of the formation of an oxide film during wear.
topic	high-entropy alloy microstructure mechanical properties processing
url	https://www.mdpi.com/2075-4701/11/8/1315
work_keys_str_mv	AT gengbiaochen effectsofzrcontentonthemicrostructureandperformanceoftimonbzrsubxsubhighentropyalloys AT yixiao effectsofzrcontentonthemicrostructureandperformanceoftimonbzrsubxsubhighentropyalloys AT xixiji effectsofzrcontentonthemicrostructureandperformanceoftimonbzrsubxsubhighentropyalloys AT xiubingliang effectsofzrcontentonthemicrostructureandperformanceoftimonbzrsubxsubhighentropyalloys AT yonglehu effectsofzrcontentonthemicrostructureandperformanceoftimonbzrsubxsubhighentropyalloys AT zhihaicai effectsofzrcontentonthemicrostructureandperformanceoftimonbzrsubxsubhighentropyalloys AT jianliu effectsofzrcontentonthemicrostructureandperformanceoftimonbzrsubxsubhighentropyalloys AT yonggangtong effectsofzrcontentonthemicrostructureandperformanceoftimonbzrsubxsubhighentropyalloys
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Effects of Zr Content on the Microstructure and Performance of TiMoNbZr<sub>x</sub> High-Entropy Alloys

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