Investigation of two-phase microstructure during directional solidification of Pb-30wt%Bi peritectic alloy

Xiao Wu Hu, Shuang Ming Li, Si Feng Gao, Lin Liu, Heng Zhi Fu

科研成果: 期刊稿件文章同行评审

1 引用 (Scopus)

摘要

Directional solidification experiments were conducted on Pb-30 wt%Bi peritectic alloy to investigate the two-phase microstructure at various growth rates and diameters of samples, and the formation of two-phase microstructure and the micro-scale were also studied. The experiment results show that the transition of the structure from cellular primary α phase and inter-cellular peritectic β phase to dendritic primary α phase and inter-dendritic peritectic β phase was presented with increasing the growth velocity from 1 μm/s to 100 μm/s. Whereas the incomplete banded structure and the oscillatory structure were observed in sample with diameter of 1.8 mm and 7 mm as the growth rate V ≤ 0.5 μm/s, respectively. It is also demonstrated that the primary dendrite arm spacing of α phase coincides with the equation of λV 0.16= 241.0μmV 1.16sV -0.16, which shows a good agreement with Hunt model and Trivedi model.

源语言英语
页(从-至)445-449
页数5
期刊Zhuzao/Foundry
59
5
出版状态已出版 - 5月 2010

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