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Chinese Journal of High Pressure Physics  > 2008  >  22(4): 434-438 .
SUN Shu-Hua, LI Jie, ZHAO Hai-Li, XU Rui, LIU Ri-Ping. Microstructural Characteristics in Al-Based Alloys Solidified under High Pressure[J]. Chinese Journal of High Pressure Physics, 2008, 22(4): 434-438 . doi: 10.11858/gywlxb.2008.04.017
Citation: SUN Shu-Hua, LI Jie, ZHAO Hai-Li, XU Rui, LIU Ri-Ping. Microstructural Characteristics in Al-Based Alloys Solidified under High Pressure[J]. Chinese Journal of High Pressure Physics, 2008, 22(4): 434-438 . doi: 10.11858/gywlxb.2008.04.017
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Microstructural Characteristics in Al-Based Alloys Solidified under High Pressure

doi: 10.11858/gywlxb.2008.04.017
  • 1.

    College of Sciences, Yanshan University, Qinhuangdao 066004, China;

  • 2.

    State Key Laboratory of Metastable Material Science & Technology, Yanshan University, Qinhuangdao 066004, China

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  • Corresponding author: LIU Ri-Ping
  • Received Date: 04 Mar 2008
  • Rev Recd Date: 15 Sep 2008
  • Publish Date: 05 Dec 2008
    Abstract
  • The microstructures of hypoeutectic and hyper-eutectic Al-Cu and Al-Si alloys solidified at high pressure (5 GPa) have been investigated. The results showed that high pressure has an evident influence on the morphologies and the dimensions of the solidified microstructures. This influence is directly related to the temperature interval of the liquid-solid region in the phase diagram. When the temperature interval is increased by pressure, the solidified microstructure will be coarsened. When the temperature interval is decreased by pressure, the solidified microstructure will be refined. Moreover, a new method is proposed in this paper to easily evaluate the sizes of the cellular and the dendritic microstructures.

     

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