Microscopic phase-field simulation for nucleation incubation time of Ni75AlxV25-x alloy

Yong Sheng Li, Zheng Chen, Yan Li Lu, Yong Xin Wang, Jian Jun Zhang

科研成果: 期刊稿件文章同行评审

2 引用 (Scopus)

摘要

With the microscopic phase-field dynamic model, the effects of temperature and concentration on the nucleation incubation time of Ni75AlxV25-x alloy were studied and the relation between the incubation time and precipitation mechanism was investigated by using the atomic occupation probability picture and average order parameter curve. The simulation results demonstrate that there exists the incubation time for different precipitation mechanisms, such as non-classical nucleation, the mixed style of non-classical nucleation and spinodal decomposition and spinodal ordering; the incubation time shortens in turn for the three kinds of mechanisms. With the increase of Al content of Ni75AlxV25-x alloy, the incubation time of L12 phases shortens continuously and that of D022 phases is prolonged. The effects of temperature on the incubation time of L12 and D022 phases are accordant, i.e. the incubation time is greatly prolonged with the temperature rising.

源语言英语
页(从-至)635-640
页数6
期刊Journal of Central South University of Technology (English Edition)
12
6
DOI
出版状态已出版 - 12月 2005

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