Yanjun Li, Weimin Mao, Zisheng Zhen, and Xueyou Zhong, Microstructure Characteristics and Apparent Viscosity of Hypereutectic Al-24%Si Alloy Melt During Semi-solid State Stirring, J. Univ. Sci. Technol. Beijing , 8(2001), No. 2, pp.126-128.
Cite this article as: Yanjun Li, Weimin Mao, Zisheng Zhen, and Xueyou Zhong, Microstructure Characteristics and Apparent Viscosity of Hypereutectic Al-24%Si Alloy Melt During Semi-solid State Stirring, J. Univ. Sci. Technol. Beijing , 8(2001), No. 2, pp.126-128.
Materials

Microstructure Characteristics and Apparent Viscosity of Hypereutectic Al-24%Si Alloy Melt During Semi-solid State Stirring

Author Affilications
Funds: 

supported by National Natural Science Foundation of China(Item No. 59771011)

  • The microstructural evolution and apparent viscosity of hypereutectic Al-24%Si alloy during semi-solid state shearing were studied with a Searte type viscometer. When the alloy melt was continuously stirred from 720 ℃ to eutectic temperature, the primary Si crystals were gradually changed from elongated platelets to near-spherical shapes. It was found that some nondendritic α-phase formed when the melt was stirred below 585 ℃. The experiment showed that the semi-solid stirring had strong effect on inhibiting the anisotropic growth of Si crystals during solidification. The apparent viscosity of the alloy melt increased slowly with the decreasing of temperature before the formation of nondendritic α-phase, which caused the dramatic increase of apparent viscosity.
  • Related Articles

    [1]Biplab Hazra, Supriya Bera, Bijay Kumar Show. Enhanced elevated temperature wear resistance of Al-17Si-5Cu alloy after a novel short duration heat treatment [J]. International Journal of Minerals, Metallurgy and Materials, 2019, 26(3): 360-368. DOI: 10.1007/s12613-019-1745-5
    [2]Li-zi He, Yi-heng Cao, Yi-zhou Zhou, Jian-zhong Cui. Effects of Ag addition on the microstructures and properties of Al-Mg-Si-Cu alloys [J]. International Journal of Minerals, Metallurgy and Materials, 2018, 25(1): 62-72. DOI: 10.1007/s12613-018-1547-1
    [3]Long-gang Hou, Yuan-hua Cai, Hua Cui, Ji-shan Zhang. Microstructure evolution and phase transformation of traditional cast and spray-formed hypereutectic aluminium-silicon alloys induced by heat treatment [J]. International Journal of Minerals, Metallurgy and Materials, 2010, 17(3): 297-306. DOI: 10.1007/s12613-010-0308-6
    [4]Ya-lin Lu, Miao-quan Li, Xing-cheng Li, Xiao-ping Li. Microscopic characterization of semi-solid aluminium alloys [J]. International Journal of Minerals, Metallurgy and Materials, 2010, 17(3): 290-296. DOI: 10.1007/s12613-010-0307-7
    [5]Haitao Jiang, Zhenli Mi, Di Tang, Miaoquan Li. Microstructure evolution of Al-4Cu-Mg alloy during semi-solid treatment [J]. International Journal of Minerals, Metallurgy and Materials, 2007, 14(2): 151-156. DOI: 10.1016/S1005-8850(07)60030-9
    [6]Huimin Liu, Hua Cui, Bin Yang, Jishan Zhang. Isothermal grain growth of reactive spray formed 7075 alloys in semi-solid state [J]. International Journal of Minerals, Metallurgy and Materials, 2004, 11(5): 411-414.
    [7]Lina Hu, Xiufang Bian, Youfeng Duan. Influence of hydrogen content on the behavior of grain reflnement in hypereutectic aluminum-silicon alloy [J]. International Journal of Minerals, Metallurgy and Materials, 2004, 11(2): 141-146.
    [8]Zhenyao Wang. Rheological behaviour of semi-solid succinonitrile-camphor alloy [J]. International Journal of Minerals, Metallurgy and Materials, 2003, 10(1): 25-29.
    [9]Yanjun Li, Weimin Mao, Xueyou Zhong. Microstructure Evolution of Semi-solid Processed Hyper-eutectic Al-30%Si Alloy [J]. International Journal of Minerals, Metallurgy and Materials, 1999, 6(4): 259-261.
    [10]Yong Tang, Jianzhong Wang, Daqing Cang. Electro-Pulse on Improving Steel Ingot Solidification Structure [J]. International Journal of Minerals, Metallurgy and Materials, 1999, 6(2): 94-96.

Catalog

    Share Article

    Article Metrics

    Article views (221) PDF downloads (11) Cited by()

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return