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Solidification Behavior and Mechanical Property of a Highly Undercooled Al–Si Alloys

  • Bo Dang
  • Zengyun Jian
  • Junfeng Xu
Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)

Abstract

The solidification behavior of hypereutectic Al–Si alloys was investigated by electromagnetic levitation technique combining analysis of high-speed video and scanning electron microscopy. The results show that, with increasing degree of undercooling, the morphology of the primary Si transforms from dendrites to fragmented bulks and granular grains and then to equiaxed grains; the nucleation frequency increases exponentially, while the average grain size decreased exponentially. Furthermore, the effect of undercooling on microhardness was analyzed.

Keywords

Growth morphology Microstructure Undercooling Microhardness 

Notes

Acknowledgements

The authors are grateful for the Natural Science Foundation of China (No. 51671151).

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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  1. 1.The School of Materials Science and Chemical EngineeringXi’an Technological UniversityXi’anChina

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