Effects of Reinforcement Volume Fraction on Mechanical Properties and Microstructures of 7075Al Matrix Composites Reinforced by FeCoCrNiAl High-Entropy Alloy Particles

doi:10.3390/met12050851

	Effects of Reinforcement Volume Fraction on Mechanical Properties and Microstructures of 7075Al Matrix Composites Reinforced by FeCoCrNiAl High-Entropy Alloy Particles
	Gao, Changqi; Wang, Qiaobo; Wei, Mingyu; Fan, Hongjing; Zhao, Libo; Wei, Yupeng; Ma, Qin
刊名	METALS
	2022-05-01
卷号	12 期号:5
关键词	FeCoCrNiAl high-entropy alloy reinforcements 7075Aluminium matrix composites volume fraction flexural strength and toughness failure mode
DOI	10.3390/met12050851
英文摘要	High-entropy alloy particles reinforcements improve the mechanical properties of aluminum matrix composites while increasing its density. Investigating the effects of the reinforcement content is conducive to the fabrication of lightweight and high strength composites. FeCoCrNiAl high-entropy alloy particles (HEA(p)) reinforced 7075Al matrix composites (HEA(p)/Al) with different HEA(p) volume fractions of 5, 10, 15, and 20 vol% were fabricated via a vacuum ball milling and vacuum hot pressing sintering, and then the microstructures, interface, density, and mechanical properties of the HEA(p)/Al composites were characterized. The results indicated that composites with high relative density can be obtained with a holding time of 10 min at 580 degrees C, 30 MPa; the HEA(p) distribution was homogeneous as the increase of reinforcement volume fraction decreases and forms agglomeration, especially when the volume fraction is up to 15 vol% and 20 vol%; the density and hardness of HEA(p)/Al composites improved with the increase of reinforcements' volume fraction, whereas the flexural strength and fracture toughness of HEA(p)/Al composites increased at first and then decreased; the HEA(p)/Al composites reinforced by 10 vol% HEA(p) showed the maximum flexural strength and fracture toughness, which were increased by 124.6% and 107% compared with 7075Al, respectively; the improvement of mechanical properties was attributed to the dislocation strengthening behavior and load transfer effect of the HEA(p) reinforcement.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	MDPI
WOS记录号	WOS:000804903600001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158638]
专题	材料科学与工程学院
作者单位	Lanzhou Univ Technol, Sch Mat Sci & Engn, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Gao, Changqi,Wang, Qiaobo,Wei, Mingyu,et al. Effects of Reinforcement Volume Fraction on Mechanical Properties and Microstructures of 7075Al Matrix Composites Reinforced by FeCoCrNiAl High-Entropy Alloy Particles[J]. METALS,2022,12(5).
APA	Gao, Changqi.,Wang, Qiaobo.,Wei, Mingyu.,Fan, Hongjing.,Zhao, Libo.,...&Ma, Qin.(2022).Effects of Reinforcement Volume Fraction on Mechanical Properties and Microstructures of 7075Al Matrix Composites Reinforced by FeCoCrNiAl High-Entropy Alloy Particles.METALS,12(5).
MLA	Gao, Changqi,et al."Effects of Reinforcement Volume Fraction on Mechanical Properties and Microstructures of 7075Al Matrix Composites Reinforced by FeCoCrNiAl High-Entropy Alloy Particles".METALS 12.5(2022).