Influences of Fe, Mn and Y additions on microstructure and mechanical properties of hypoeutectic Al–7%Si alloy

doi:10.1016/j.intermet.2020.106768

	Influences of Fe, Mn and Y additions on microstructure and mechanical properties of hypoeutectic Al–7%Si alloy
	Li, Qinglin1,2 ; Zhu, Yuqian 1,2; Zhao, Shang 1,2; Lan, Yefeng1,2 ; Liu, Dexue1,2 ; Jian, Guangfei 1,2; Zhang, Qiang 1,2; Zhou, Hongwei 1,2
	2020-05
发表期刊	Intermetallics
ISSN	09669795
卷号	120
摘要	In this work, the influences of Fe, Mn and Y with various contents on microstructural evolution and mechanical properties of hypoeutectic Al–7%Si alloy were investigated by microscopy technology and tensile test. The results showed that the complex addition of Al–20%Si-2.5%Fe–2%Mn master alloy and rare earth Y have much better refining effect of need-like eutectic Si and coarse α-Al dendrites than that of separate addition of master alloy or rare earth Y. Combined additions of 7.0% master alloy and 0.2% Y, the average grain size was decreased by 89.5% from 483.1 μm to 50.8 μm and secondary dendrite arm spacing (SDAS) was reduced by 46.8% from 26.9 μm to 14.3 μm. Moreover, the coarse flake-like eutectic Si structure was effectively modified into fine fiber and granular shape. In addition, ultimate tensile strength (UTS) was improved by 33.3% from 162 MPa to 216 MPa, and elongation (El) value was enhanced by 46.7% from 6.2% to 9.1%. The fracture mode transformed from brittle fracture to ductile fracture. © 2020 Elsevier Ltd
关键词	Aluminum metallography Dendrites (metallography) Ductile fracture Eutectics Intermetallics Iron metallography Manganese alloys Manganese metallography Mechanical properties Metal testing Microstructure Rare earth additions Rare earths Tensile strength Tensile testing Average grain size Complex addition Master alloys Microstructure and mechanical properties Rare-earth Y Secondary dendrite arm spacing Si alloys Ultimate tensile strength
DOI	10.1016/j.intermet.2020.106768
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000528268500020
出版者	Elsevier Ltd
EI入藏号	20201108286225
EI主题词	Silicon alloys
EI分类号	531 Metallurgy and Metallography ; 543.2 Manganese and Alloys ; 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals ; 804.2 Inorganic Compounds ; 951 Materials Science
来源库	WOS
引用统计	被引频次：23[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/150790
专题	材料科学与工程学院
通讯作者	Li, Qinglin
作者单位	1.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, 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; 省部共建有色金属先进加工与再利用国家重点实验室
通讯作者单位	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
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	Li, Qinglin,Zhu, Yuqian,Zhao, Shang,et al. Influences of Fe, Mn and Y additions on microstructure and mechanical properties of hypoeutectic Al–7%Si alloy[J]. Intermetallics,2020,120.
APA	Li, Qinglin.,Zhu, Yuqian.,Zhao, Shang.,Lan, Yefeng.,Liu, Dexue.,...&Zhou, Hongwei.(2020).Influences of Fe, Mn and Y additions on microstructure and mechanical properties of hypoeutectic Al–7%Si alloy.Intermetallics,120.
MLA	Li, Qinglin,et al."Influences of Fe, Mn and Y additions on microstructure and mechanical properties of hypoeutectic Al–7%Si alloy".Intermetallics 120(2020).