Phase-field simulation of microstructural evolution during preparation of semi-solid metal adopting EMS method

Xiao Lu Yu, Fu Guo Li, Yuan Chun Ren, Miao Quan Li

科研成果: 期刊稿件文章同行评审

摘要

In the process of preparation of semi-solid metal materials, a variety of factors would influence the prepared time, the morphology of non-dendritic microstructure. The aim of this work is using phase-field method to simulate non-dendritic growth during preparation of Al-4Cu-Mg semi-solid alloy adopting electromagnetic stirring method (EMS method). Several affecting factors such as the disturbance intensity, the anisotropy, the thickness of the interface and the ratio of diffusivity in solid and liquid, etc are considered. It is shown that decreasing the thickness of the interface results in more circular outline perimeter of particles, and increasing the diffusivity in solid can reduce degree of microsegregation. The disturbance intensity in the model can be connected with current intensity of stator or magnetic induction density impressed. Simulation results show that the larger the disturbance intensity or magnetic induction density, the smaller the size and the more globular morphology of original phase in the matrix.

源语言英语
页(从-至)973-978
页数6
期刊Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica
27
5
出版状态已出版 - 9月 2006

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