Microstructural features of AlFeSi spherical particles in hypoeutectic Al-Si alloy

被引：1
作者：
Lei, Xuanxuan [1 ]
Li, Yukun [2 ]
Du, Xiaodong [1 ,3 ]
机构：
[1] Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Peoples R China
[2] Hefei Univ Technol, Sch Instrument Sci & Optoelect Engn, Hefei 230009, Peoples R China
[3] Hefei Univ Technol, Engn Res Ctr High Performance Copper Alloy Mat & P, Minist Educ, Hefei 230009, Peoples R China
来源：
MATERIALS TODAY COMMUNICATIONS | 2023年 / 37卷
关键词：
Al -Si master alloy; Spherical particles; Al; 9; Fe; 2; Si; Fine Si particles; Nucleation; FE-RICH PHASES; INTERMETALLIC PHASES; IN-SITU; NUCLEATION; GROWTH; ALUMINUM; SELECTION; IRON;
D O I：
10.1016/j.mtcomm.2023.107105
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Al-Si alloy ingots used for the study were produced by diluting an Al-Si master alloy containing impurity Fe with pure Al. A type of micron-sized AlFeSi spherical microstructure was observed in the diluted alloy ingot. These spherical particles have an overall diameter range of 2.8-6.1 mu m, with polyhedral Al9Fe2Si2 particles inside and clusters of fine Si particles with sizes concentrated at 200-250 nm outside. During solidification, the AlFeSi atomic clusters in the alloy melt firstly form the polyhedral Al9Fe2Si2 and then a shell of fine Si particles. The internal polyhedral Al9Fe2Si2 particles and the external fine Si particles have different formation mechanisms, with the polyhedral Al9Fe2Si2 particles being dominated by faceted growth and the fine Si particles being dominated by finite growth after nucleation.
引用
收藏
页数：11
相关论文
共 35 条
  • [1] Intermetallic phase selection in 1XXX Al alloys
    Allen, CM
    O'Reilly, KAQ
    Cantor, B
    Evans, PV
    [J]. PROGRESS IN MATERIALS SCIENCE, 1998, 43 (02) : 89 - 170
  • [2] Influence of Ni in high Fe containing recyclable Al-Si cast alloys
    Basak, C. B.
    Meduri, Aditya
    Babu, N. Hari
    [J]. MATERIALS & DESIGN, 2019, 182
  • [3] Morphological changes and segregation of β-Al9Fe2Si2 phase: A perspective from better recyclability of cast Al-Si alloys
    Basak, C. B.
    Babu, N. Hari
    [J]. MATERIALS & DESIGN, 2016, 108 : 277 - 288
  • [4] Belov N.A., 2002, Iron in Aluminium Alloys: Impurity and Alloying Element, DOI [10.1201/9781482265019, DOI 10.1201/9781482265019]
  • [5] In-situ study of morphology and growth of primary α-Al(FeMnCr)Si intermetallics in an Al-Si alloy
    Bjurenstedt, Anton
    Casari, Daniele
    Seifeddine, Salem
    Mathiesen, Ragnvald H.
    Dahle, Arne K.
    [J]. ACTA MATERIALIA, 2017, 130 : 1 - 9
  • [6] Evolutionary mechanism of the precipitation behavior and organization of iron-containing intermetallic phase during solidification of recycled high-Fe Al-Zn-Mg-Cu melts
    Du, Sen
    Zhang, Shengen
    Wang, Jianwen
    Lv, Zhengfeng
    Yan, Zhaohui
    Liu, Jun
    Liu, Bo
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2023, 968
  • [7] Diffusion coefficients of some solutes in fcc and liquid Al: critical evaluation and correlation
    Du, Y
    Chang, YA
    Huang, BY
    Gong, WP
    Jin, ZP
    Xu, HH
    Yuan, ZH
    Liu, Y
    He, YH
    Xie, FY
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 363 (1-2): : 140 - 151
  • [8] A Mossbauer investigation of phases formed in Al-Fe alloys
    Forder, SD
    Brooks, JS
    Evans, PV
    [J]. SCRIPTA MATERIALIA, 1996, 35 (10) : 1167 - 1173
  • [9] Revealing the role of liquid preordering in crystallisation of supercooled liquids
    Hu, Yuan-Chao
    Tanaka, Hajime
    [J]. NATURE COMMUNICATIONS, 2022, 13 (01)
  • [10] The characterization of Fe-rich phases in a high-pressure die cast hypoeutectic aluminum-silicon alloy
    Jiao, X. Y.
    Liu, C. F.
    Guo, Z. P.
    Tong, G. D.
    Ma, S. L.
    Bi, Y.
    Zhang, Y. F.
    Xiong, S. M.
    [J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, 2020, 51 : 54 - 62
1234