1.State Key Laboratory for Mechanical Behavior of Materials，Xi’an Jiaotong University，Xi’an 710049，China
2.Engineering Research Center for Magnesium-Based New Materials，Xi’an Jiaotong University，Xi’an 710049，China
et al.
Magnesium has a hexagonal close-packed (hcp) crystal structure, thus its mechanical and physical/chemical properties exhibit significant anisotropy along variant crystallographic orientations. High-purity magnesium single crystal is an ideal material for studying the mechanical properties, corrosion resistance, electrical and thermal conductivity, and other physical/chemical properties of magnesium along different crystallographic orientations. However, high-purity magnesium single crystals often need to be imported, which are expensive, and the purchase procedures are complicated and timeconsuming. Moreover, the size of magnesium single crystal produced by current methods is generally with centimeter or even smaller. The present paper proposes a method for growing high-purity magnesium single crystals based on melt controlled-speed drop casting method. The effects such as raw material purity, crucible configuration, and temperature setting on crystal growth are studied. Using the proposed method, decimeter-sized high-purity magnesium single crystals with a purity of 99.99wt% are successfully produced.