The Influence of AlFeNiCrCoTi High-Entropy Alloy on Microstructure, Mechanical Properties and Tribological Behaviors of Aluminum Matrix Composites

doi:10.1007/s40962-020-00462-x

	The Influence of AlFeNiCrCoTi High-Entropy Alloy on Microstructure, Mechanical Properties and Tribological Behaviors of Aluminum Matrix Composites
	Li, Qinglin 1; Bao, Xuepeng 1; Zhao, Shang 1; Zhu, Yuqian 1; Lan, Yefeng 1; Feng, Xianyu 2; Zhang, Qiang 2
刊名	INTERNATIONAL JOURNAL OF METALCASTING
	2020-04-24
卷号	15 期号:1 页码:281-291
关键词	aluminum matrix composites high-entropy alloy microstructure mechanical properties tribological behaviors
ISSN号	1939-5981
DOI	10.1007/s40962-020-00462-x
英文摘要	The microstructure, mechanical properties and tribological behaviors of aluminum matrix composites with different contents of AlFeNiCrCoTi high-entropy alloy (HEA) (4.0, 5.0 and 6.0 wt%) were investigated. The as-cast specimens were analyzed by the scanning electron microscopy and electron probe micro-analysis. The results indicated that flake-like and blocky intermetallic compounds precipitated distributing in alpha-Al matrix in the solidification when the concentration of HEA was more than 4.0 wt% in pure aluminum. Moreover, as the content of HEA increased, the number of the intermetallic compounds increased. Meanwhile, a new phase formed and it distributed inter-dendrite of alpha-Al in the solidification, which morphology was rod-shaped and the diameter was less than 200 nm. The area fraction of the nano-phases increased, and the diameter decreased with increasing the addition of HEA in pure aluminum. The tensile test illustrated that the ultimate tensile strength increased firstly and then decreased with the increase of HEA content. When the addition concentration of HEA was 4.0 wt%, the ultimate tensile strength enhanced from 58 to 142 MPa. When 5.0 wt% HEA was added into pure aluminum, the ultimate tensile strength further improved from 142 to 170 MPa. In addition, the elongation decreased from 40.6 to 22.7%. However, when 6.0 wt% HEA was added into pure aluminum, the ultimate tensile strength and elongation reduced to 157 MPa and 18.2%, respectively. The tribological behaviors of aluminum matrix composites were investigated under the condition of seawater. The friction coefficient and wear rate of aluminum matrix composites significantly decreased with the increase of HEA content. Moreover, when the addition level was up to 6.0 wt%, the friction coefficient of aluminum matrix composites decreased by 71.1% from 0.83 to 0.24, and wear rate decreased by 90.8% from 2.48 x 10(-9) m(3) N-1 m(-1) to 2.27 x 10(-10) m(3) N-1 m(-1).
资助项目	National Natural Science Foundation of China[51561021] ; State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology[SKLAB02019007] ; National Innovation Training Program of College Students[DC2019165][DC2019161]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SPRINGER INTERNATIONAL PUBLISHING AG
WOS记录号	WOS:000528416700001
状态	已发表
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/64304]
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Li, Qinglin
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China 2.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Li, Qinglin,Bao, Xuepeng,Zhao, Shang,et al. The Influence of AlFeNiCrCoTi High-Entropy Alloy on Microstructure, Mechanical Properties and Tribological Behaviors of Aluminum Matrix Composites[J]. INTERNATIONAL JOURNAL OF METALCASTING,2020,15(1):281-291.
APA	Li, Qinglin.,Bao, Xuepeng.,Zhao, Shang.,Zhu, Yuqian.,Lan, Yefeng.,...&Zhang, Qiang.(2020).The Influence of AlFeNiCrCoTi High-Entropy Alloy on Microstructure, Mechanical Properties and Tribological Behaviors of Aluminum Matrix Composites.INTERNATIONAL JOURNAL OF METALCASTING,15(1),281-291.
MLA	Li, Qinglin,et al."The Influence of AlFeNiCrCoTi High-Entropy Alloy on Microstructure, Mechanical Properties and Tribological Behaviors of Aluminum Matrix Composites".INTERNATIONAL JOURNAL OF METALCASTING 15.1(2020):281-291.