Investigation on the undercooling and crystallization of pure aluminum melt by DSC

Abstract

The undercooling of pure aluminum melt was in situ investigated by differential scanning calorimeter with flux processing technique in this study. The highest undercooling of pure aluminum with 17.8 K was obtained as the thermal treatment temperature of the melt being 1033 K and the cooling rate being 50 K min⁻¹. When cooling rate is fixed, the undercooling depends on the melt processing temperature, and increases rapidly at the first stage. The effects of thermal treatment temperature and cooling rates on the undercooling are discussed in this article.

Keywords:

• pure aluminum
• differential scanning calorimeter (DSC)
• flux processing technique
• undercooling degree
• undercooling solidification

Acknowledgements

The authors would like to thank the financial support from the Natural Science Foundation of Hebei Province in China under grant No. 598250.