Volume 36 Issue 4
Jul.  2016
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Article Navigation >  Chinese Journal of Space Science  > 2016  >  36(4): 450-454
JIANG Hongxiang, SUN Qian, ZHAO Jiuzhou, YANG Zhizeng. Microstructure Evolution of Directionally Solidified Al-3.4%Bi Alloy[J]. Chinese Journal of Space Science, 2016, 36(4): 450-454. doi: 10.11728/cjss2016.04.450
Citation: JIANG Hongxiang, SUN Qian, ZHAO Jiuzhou, YANG Zhizeng. Microstructure Evolution of Directionally Solidified Al-3.4%Bi Alloy[J]. Chinese Journal of Space Science, 2016, 36(4): 450-454. doi: 10.11728/cjss2016.04.450
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Microstructure Evolution of Directionally Solidified Al-3.4%Bi Alloy

doi: 10.11728/cjss2016.04.450 cstr: 32142.14.cjss2016.04.450

  • Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016

  • Received Date: 2015-11-10
  • Rev Recd Date: 2016-04-11
  • Publish Date: 2016-07-15
    Abstract
  • Directional solidification experiments are carried out with Al-3.4%Bi alloy and the microstructure evolution mechanism is investigated. The results demonstrate that a solute-rich layer forms in front of the solidification interface and the liquid-liquid decomposition occurs at the same region. When the alloy is solidified at a relatively low velocity, the size distribution of the minority phase particles shows two peaks. When the alloy is solidified at a high velocity so that the minority phase droplets of all sizes in front of the solidification interface migrate to the solidification interface, the size distribution of the minority phase particles shows only one peak.

     

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