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Chinese Science Bulletin

, Volume 50, Issue 16, pp 1799–1804 | Cite as

Solidification pattern and microstructures of AZ91D magnesium alloy through rheoforming

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Abstract

The optical microscope, SEM and EDS were adopted to analyze the rheoforming solidification morphologies and microstructures of deformed AZ91D magnesium alloy after isothermal treatment in semisolid state. The results show that primary α phase can be formed through attachment growth, when the liquid fraction is small; and primary α phase will grow in dendrites, when the liquid fraction is high. Eutectic solidification is carried out in the ways of both dissociated growth and symbiotic growth, depending on the morphology of primary α phase. Liquid with eutectic concentration solidifies into lamina eutectic. During solidification of the liquid pools inside grains, α phase can be formed through attachment growth. The eutectic solidification was mainly carried out in the dissociated pattern.

Keywords

magnesium alloy semisolid rheoforming solidified microstructure quenching microstructure solidification pattern 

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Copyright information

© Science in China Press 2005

Authors and Affiliations

  • Wuxiao Wang
    • 1
    • 2
  • Sen Yuan
    • 2
  • Bailing Jiang
    • 2
  • Wanqi Jie
    • 1
  1. 1.College of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’anChina
  2. 2.School of Materials Science and EngineeringXi’an University of TechnologyXi’anChina

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