Decline of nucleation in the heating process with a high heating rate

Gao Lin Yang, Xin Lin, Meng Hua Song, Qiao Hu, Zhi Tai Wang, Wei Dong Huang

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The effect of the heating rate on the nucleation of metallic glass in a rapid heating process starting from the glass transition temperature is investigated. The critical nucleus radius increases with the increase of the temperature of the undercooling liquid. If the increment rate of the critical nucleus radius, owing to the heating process, is higher than the growth rate of the nuclei, the nuclei generated at the low temperature will become the embryos at the high temperature. This means that the high heating rate can make no nucleation happen in the heating process. In consideration of the interfacial energy, the growth rate of the nuclei increases with the increase of their size and the growth rate of the critical nucleus is zero. Thus, the lower heating rate can also make the nuclei decline partially. Finally, this theory is used to analyze the nucleation process during laser remelting metallic glass.

Original languageEnglish
Article number086401
JournalChinese Physics B
Volume23
Issue number8
DOIs
StatePublished - 1 Aug 2014

Keywords

  • bulk metallic glass
  • growth rate
  • heating rate
  • nucleation

Fingerprint

Dive into the research topics of 'Decline of nucleation in the heating process with a high heating rate'. Together they form a unique fingerprint.

Cite this