Microstructure Evolution of the Cu-Cr Hypereutectic Alloys During Directional Solidification

  • ZhongPing Que
  • JeHyun Lee
  • WeiLi Cheng
  • SeungZeon Han
  • HyungMin Jung
  • KwangJun Euh
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 235)


The effects of directional solidification velocity, temperature and alloy composition on the microstructure evolution of Cu-Cr alloys were investigated systematically. The microstructure observations showed that the halo α-Cu phase formed from the Cu-rich solute neighbor to primary Cr-rich phase, and followed by the growth of rod-like coupled eutectic. The Cr-rich phase coarsened and the eutectic spacing increased with the decreasing growth velocity and the increasing solidification temperature. Further, the eutectic and the primary phase transformation temperatures in hypereutectic alloys were determined by the DSC tests. The eutectic temperature has been established to be 1079 ± 0.5 °C.


Solidification Microstructure evolution Interface Cu-Cr alloys Solidification velocity Solidification temperature 



This research was supported by a grant from the Fundamental R&D Program for Core Technology of Materials funded by the Korean Government (MCIE), the National Research Foundation of Korea (NRF) funded by the Korean Government (MEST) (No.2011-0030801) and the Fund for Young Scholars of Taiyuan University of Technology (No. 2012L053).


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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • ZhongPing Que
    • 1
    • 2
  • JeHyun Lee
    • 2
  • WeiLi Cheng
    • 1
  • SeungZeon Han
    • 3
  • HyungMin Jung
    • 2
  • KwangJun Euh
    • 3
  1. 1.Department of Materials Science and EngineeringTaiyuan University of TechnologyTaiyuanChina
  2. 2.Department of Materials Science and EngineeringChangwon National UniversityChangwonSouth Korea
  3. 3.Grain Structure Control Research GroupKorea Institute of Materials ScienceChangwonSouth Korea

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