Phase-field modeling of the influence of elastic field on the nucleation and microstructure evolution in precipitation

Yu Xiang Zhang, Jin Cheng Wang, Yu Juan Yang, Gen Cang Yang, Yao He Zhou

科研成果: 期刊稿件文章同行评审

1 引用 (Scopus)

摘要

A phase-field method was employed to study the influence of elastic field on the nucleation and microstructure evolution. Two kinds of nucleation process were considered: one using fixed nucleation probability and the other calculated from the classical nucleation theory. In the latter case, the simulated results show that the anisotropic elastic strain field yields significant effects on the behavior of nucleation. With a large lattice misfit between the matrixes and the precipitates, the nucleation process does not appear fully random but displays some spatial correlation and has a preference for the elastic soft direction. However, with a small lattice misfit, this bias does not look quite clear. On the contrary, in the case of fixed nucleation probability, the elastic field has no influence on the nucleation process. The lattice mismatch also exerts influences on the microstructure morphology: with lattice mismatch becoming larger, the microstructure proves to align along the elastic soft direction.

源语言英语
页(从-至)107-110
页数4
期刊Chinese Journal of Aeronautics
20
2
DOI
出版状态已出版 - 4月 2007

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