Enhancement effect of Al2O3@Y3Al5O12 short nanofibers on aluminum alloy matrix composites

doi:10.13801/j.cnki.fhclxb.20190524.001

	Enhancement effect of Al2O3@Y3Al5O12 short nanofibers on aluminum alloy matrix composites
	He, Ling 1,2; Liu, Chenguang 2; Li, Wensheng 2; Sun, Weimin 2; Pan, Lili 2
刊名	Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica
	2020-02-01
卷号	37 期号:2 页码:400-407
关键词	Alumina Aluminum oxide Dispersion (waves) Elongation Hardness Hot pressing Metallic matrix composites Nanofibers Polymer matrix composites Shells (structures) Sintering Tensile strength Ultrasonic applications Yttrium aluminum garnet Aluminum alloy composites Aluminum alloy matrices Core shell structure Hot pressing sintering Mechanical agitation Strength and elongations Toughening mechanisms Y3Al5O12
ISSN号	10003851
DOI	10.13801/j.cnki.fhclxb.20190524.001
英文摘要	By using a kind of composite nanofibers with core-shell structure to reinforce aluminum alloy matrix composites, it can improve the tensile strength while increasing plasticity. Al2O3@Y3Al5O12 short nanofibers reinforced 2024 aluminum alloy composites were prepared by vacuum hot-pressing sintering technique. The effects of Al2O3@Y3Al5O12 nanofibers content on the relative density, hardness, tensile strength and elongation of composites were studied, and the effect of the core-shell structure on the toughening mechanism of the composites explored. The results show that the Al2O3@Y3Al5O12 short nanofibers have good dispersion, and the fibers are uniformly adsorbed on the surface of aluminum alloy particles without stratification and agglomeration was method of ultrasonic dispersion and mechanical agitation. After hot-pressing sintering, the Al2O3@Y3Al5O12 short nanofibers are uniformly dispersed in the aluminum alloy matrix with a form of short fibers, and a small content of Al2O3@Y3Al5O12 short nanofibers plays the role of bridging and hole filling, which increases the relative density and hardness of the composites. There are the maximum tensile strength and elongation of the composites at the nanofiber mass fraction of 1wt%, which increase from 249.3 MPa (matrix) to 299.1 MPa, 2.9% (matrix) to 4.3%, respectively. The addition of Y3Al5O12-Al2O3 short nanofibers can refine the composites grain, hinder crack propagation, and the plastic deformation of Y3Al5O12-Al2O3 core-shell structure plays a strengthening and toughening effect in the process of pulling out/breaking. © 2020, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.
语种	中文
出版者	Beijing University of Aeronautics and Astronautics (BUAA)
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115182]
专题	材料科学与工程学院
作者单位	1.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China 2.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	He, Ling,Liu, Chenguang,Li, Wensheng,et al. Enhancement effect of Al2O3@Y3Al5O12 short nanofibers on aluminum alloy matrix composites[J]. Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica,2020,37(2):400-407.
APA	He, Ling,Liu, Chenguang,Li, Wensheng,Sun, Weimin,&Pan, Lili.(2020).Enhancement effect of Al2O3@Y3Al5O12 short nanofibers on aluminum alloy matrix composites.Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica,37(2),400-407.
MLA	He, Ling,et al."Enhancement effect of Al2O3@Y3Al5O12 short nanofibers on aluminum alloy matrix composites".Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica 37.2(2020):400-407.