Influences of different Zr/Sc ratios on microstructure and mechanical properties of Al-2Si alloy

doi:10.1016/j.jre.2020.01.004

	Influences of different Zr/Sc ratios on microstructure and mechanical properties of Al-2Si alloy
	Li, Qinglin 1,2; Ma, Xiaodong 2; Li, Binqiang 3; Ma, Jiqiang 1; Feng, Xiangyu 2; Pei, Ruijie 2; Liu, Jianjun 2
刊名	Journal of Rare Earths
	2021
卷号	39 期号:1 页码:105-112
关键词	Aluminum metallography Ductile fracture Eutectics Mechanical properties Rare earths Scandium alloys Scanning electron microscopy Silicon alloys Spectrometers Tensile strength Textures Zircaloy Zirconium metallographyDendritic structures Energy dispersive spectrometers Eutectic si Mechanical performance Microstructure and mechanical properties Si alloys The scanning electron microscopes (SEM) Ultimate tensile strength
ISSN号	10020721
DOI	10.1016/j.jre.2020.01.004
英文摘要	The influences of different Zr/Sc ratios on the microstructural evolution and mechanical performances of Al-2Si alloy were investigated in this paper. The as-cast samples were characterized and analyzed by the scanning electron microscope (SEM) with an energy dispersive spectrometer (EDS) to indicate the refining effect of the different Zr/Sc ratios on the α-Al and Si phases in Al-2Si alloy. The results indicate that the α-Al phases are refined from coarse dendritic structure to relatively fine equiaxed grains when the Zr/Sc ratio is equal to 1:1. Meanwhile, the eutectic Si phase in Al-2Si-0.2Zr-0.2Sc alloy is modified from the coarse plate and needle to fine fiber and partial granular structure, and the average roundness of eutectic Si is decreased by 75% from 16 to 4. With the refinement of α-Al phases and the modification of eutectic Si structure, the ultimate tensile strength (UTS) is improved by 53% and the elongation (EL) is increased by 64% when the Zr/Sc ratio is equal to 1:1. In addition, the UTS decreases and EL is enhanced with the increase of tensile temperature. Moreover, the fracture model of Al-2Si-0.2Zr-0.2Sc alloy in 250 °C changes into the ductile fracture. © 2021 Chinese Society of Rare Earths
WOS研究方向	Chemistry
语种	英语
出版者	Editorial Office of Chinese Rare Earths
WOS记录号	WOS:000600070500014
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/132319]
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
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 3.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin; 150001, China
推荐引用方式 GB/T 7714	Li, Qinglin,Ma, Xiaodong,Li, Binqiang,et al. Influences of different Zr/Sc ratios on microstructure and mechanical properties of Al-2Si alloy[J]. Journal of Rare Earths,2021,39(1):105-112.
APA	Li, Qinglin.,Ma, Xiaodong.,Li, Binqiang.,Ma, Jiqiang.,Feng, Xiangyu.,...&Liu, Jianjun.(2021).Influences of different Zr/Sc ratios on microstructure and mechanical properties of Al-2Si alloy.Journal of Rare Earths,39(1),105-112.
MLA	Li, Qinglin,et al."Influences of different Zr/Sc ratios on microstructure and mechanical properties of Al-2Si alloy".Journal of Rare Earths 39.1(2021):105-112.