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

科研成果: 期刊稿件文章同行评审

5 引用 (Scopus)

摘要

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.

源语言英语
文章编号086401
期刊Chinese Physics B
23
8
DOI
出版状态已出版 - 1 8月 2014

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