Influences of Al-20Si-2.5Fe-2Mn Master Alloy Additions on the Microstructure and Mechanical Properties of Hypereutectic Al-20Si Alloys

doi:10.1007/s40962-019-00360-x

	Influences of Al-20Si-2.5Fe-2Mn Master Alloy Additions on the Microstructure and Mechanical Properties of Hypereutectic Al-20Si Alloys
	Li, Qinglin1 ; Zhu, Yuqian ; Li, Binqiang ; Zhao, Shang ; Wang, Chuangzao ; Lan, Yefeng ; Zhang, Yintao
	2020-04
发表期刊	INTERNATIONAL JOURNAL OF METALCASTING
ISSN	1939-5981
卷号	14 期号:2 页码:409-422
摘要	A novel Al-20Si-2.5Fe-2Mn master alloy containing alpha-Al-15(Fe, Mn)(3)Si-2 particles was developed to modify Si phases of hypereutectic Al-20Si alloy. The microstructure of as-cast specimens was investigated using scanning electron microscopy (SEM) and transmission electron microscopy (TEM) equipped with energy-dispersive spectrometers (EDS), electron probe micro-analysis (EPMA), and X-ray diffraction (XRD). The morphology of primary Si phases changed from coarse irregular pentagonal and polygonal shapes to fine blocky shapes as the adding content of the master alloy increased up to 6.0%. The mean size of the primary Si phases decreased by 70.3% from 118 to 35 mu m. Moreover, the shape of eutectic Si structure changed from coarse flakes or acicular shape to fine fibrous structure and granular particles. Furthermore, the Si phases were refined and homogenized when 6.0% master alloy was added into Al-20Si alloy. The optimum elongation (El) increased by 45.8% from 0.85 to 1.24%, and the optimum ultimate tensile strength (UTS) increased by 34.6% from 130 to 175 MPa comparing with unmodified Al-20Si alloy. In addition, the refinement and modification mechanisms of Si phases are also discussed on the hypereutectic Al-20Si alloys with the addition of master alloy.
关键词	hypereutectic Al-20Si alloy primary Si eutectic Si Al-20Si-2 5Fe-2Mn master alloy mechanical properties
DOI	10.1007/s40962-019-00360-x
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000525730700011
出版者	SPRINGER INTERNATIONAL PUBLISHING AG
引用统计	被引频次：4[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/64193
专题	省部共建有色金属先进加工与再利用国家重点实验室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
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	Li, Qinglin,Zhu, Yuqian,Li, Binqiang,et al. Influences of Al-20Si-2.5Fe-2Mn Master Alloy Additions on the Microstructure and Mechanical Properties of Hypereutectic Al-20Si Alloys[J]. INTERNATIONAL JOURNAL OF METALCASTING,2020,14(2):409-422.
APA	Li, Qinglin.,Zhu, Yuqian.,Li, Binqiang.,Zhao, Shang.,Wang, Chuangzao.,...&Zhang, Yintao.(2020).Influences of Al-20Si-2.5Fe-2Mn Master Alloy Additions on the Microstructure and Mechanical Properties of Hypereutectic Al-20Si Alloys.INTERNATIONAL JOURNAL OF METALCASTING,14(2),409-422.
MLA	Li, Qinglin,et al."Influences of Al-20Si-2.5Fe-2Mn Master Alloy Additions on the Microstructure and Mechanical Properties of Hypereutectic Al-20Si Alloys".INTERNATIONAL JOURNAL OF METALCASTING 14.2(2020):409-422.