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Volume 25 Issue 9
Sep.  2018
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Chong Lin, Shu-sen Wu, Shu-lin Lü, Ping An,  and He-bao Wu, Effects of high-pressure rheo-squeeze casting on the Fe-rich phases and mechanical properties of Al-17Si-(1,1.5)Fe alloys, Int. J. Miner. Metall. Mater., 25(2018), No. 9, pp. 1018-1026. https://doi.org/10.1007/s12613-018-1652-1
Cite this article as:
Chong Lin, Shu-sen Wu, Shu-lin Lü, Ping An,  and He-bao Wu, Effects of high-pressure rheo-squeeze casting on the Fe-rich phases and mechanical properties of Al-17Si-(1,1.5)Fe alloys, Int. J. Miner. Metall. Mater., 25(2018), No. 9, pp. 1018-1026. https://doi.org/10.1007/s12613-018-1652-1
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研究论文

Effects of high-pressure rheo-squeeze casting on the Fe-rich phases and mechanical properties of Al-17Si-(1,1.5)Fe alloys

  • 通讯作者:

    Shu-sen Wu    E-mail: ssw636@hust.edu.cn

  • The effects of high pressure rheo-squeeze casting (HPRC) on the Fe-rich phases (FRPs) and mechanical properties of Al-17Si-(1,1.5)Fe alloys were investigated. The alloy melts were first treated by ultrasonic vibration (UV) and then formed by high-pressure squeeze casting (HPSC). The FRPs in the as-cast HPSC Al-17Si-1Fe alloys only contained a long, needle-shaped β-Al5FeSi phase at 0 MPa. In addition to the β-Al5FeSi phase, the HPSC Al-17Si-1.5Fe alloy also contained the plate-shaped δ-Al4FeSi2 phase. A fine, block-shaped δ-Al4FeSi2 phase was formed in the Al-17Si-1Fe alloy treated by UV. The size of FRPs decreased with increasing pressure. After UV treatment, solidification under pressure led to further refinement of the FRPs. Considering alloy samples of the same composition, the ultimate tensile strength (UTS) of the HPRC samples was higher than that of the HPSC samples, and the UTS increased with increasing pressure. The UTS of the Al-17Si-1Fe alloy formed by HPSC exceeded that of the Al-17Si-1.5Fe alloy formed in the same manner under the same pressure. Conversely, the UTS of the Al-17Si-1Fe alloy formed by HPRC decreased to a value lower than that of the Al-17Si-1.5Fe alloy formed in the same manner.
  • Research Article

    Effects of high-pressure rheo-squeeze casting on the Fe-rich phases and mechanical properties of Al-17Si-(1,1.5)Fe alloys

    + Author Affiliations
    • The effects of high pressure rheo-squeeze casting (HPRC) on the Fe-rich phases (FRPs) and mechanical properties of Al-17Si-(1,1.5)Fe alloys were investigated. The alloy melts were first treated by ultrasonic vibration (UV) and then formed by high-pressure squeeze casting (HPSC). The FRPs in the as-cast HPSC Al-17Si-1Fe alloys only contained a long, needle-shaped β-Al5FeSi phase at 0 MPa. In addition to the β-Al5FeSi phase, the HPSC Al-17Si-1.5Fe alloy also contained the plate-shaped δ-Al4FeSi2 phase. A fine, block-shaped δ-Al4FeSi2 phase was formed in the Al-17Si-1Fe alloy treated by UV. The size of FRPs decreased with increasing pressure. After UV treatment, solidification under pressure led to further refinement of the FRPs. Considering alloy samples of the same composition, the ultimate tensile strength (UTS) of the HPRC samples was higher than that of the HPSC samples, and the UTS increased with increasing pressure. The UTS of the Al-17Si-1Fe alloy formed by HPSC exceeded that of the Al-17Si-1.5Fe alloy formed in the same manner under the same pressure. Conversely, the UTS of the Al-17Si-1Fe alloy formed by HPRC decreased to a value lower than that of the Al-17Si-1.5Fe alloy formed in the same manner.
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