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
	2022-05
发表期刊	METALS
卷号	12 期号:5
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.
关键词	FeCoCrNiAl high-entropy alloy reinforcements 7075Aluminium matrix composites volume fraction flexural strength and toughness failure mode
DOI	10.3390/met12050851
收录类别	SCIE
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000804903600001
出版者	MDPI
来源库	WOS
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/158638
专题	材料科学与工程学院
通讯作者	Gao, Changqi; Ma, Qin
作者单位	Lanzhou Univ Technol, Sch Mat Sci & Engn, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
第一作者单位	材料科学与工程学院
通讯作者单位	材料科学与工程学院
第一作者的第一单位	材料科学与工程学院
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).