Influences of Fe, Mn and Y additions on microstructure and mechanical properties of hypoeutectic Al-7%Si alloy
Li, Qinglin1,2; Zhu, Yuqian1,2; Zhao, Shang1,2; Lan, Yefeng1,2; Liu, Dexue1,2; Jian, Guangfei1,2; Zhang, Qiang1,2; Zhou, Hongwei1,2
2020-05
Source PublicationINTERMETALLICS
ISSN0966-9795
Volume120
AbstractIn 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 alpha-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 mu m to 50.8 mu m and secondary dendrite arm spacing (SDAS) was reduced by 46.8% from 26.9 mu m to 14.3 mu m. 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.
KeywordHypoeutectic Al-7%Si alloy Microstructure Al-20%Si-2.5%Fe-2%Mn master alloy Rare earth Y Mechanical properties Intermetallics
DOI10.1016/j.intermet.2020.106768
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51561021] ; State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals[SKLAB02019007] ; Training Program on College Students of Gansu Province[DC2019165][DC2019161]
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000528268500020
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/64286
Collection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
Corresponding AuthorLi, Qinglin
Affiliation1.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
First Author AffilicationColl Mat Sci & Engn;  State Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
Corresponding Author AffilicationColl Mat Sci & Engn;  State Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
First Signature AffilicationColl Mat Sci & Engn
Recommended Citation
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).
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