Constrained Crystal Growth Behaviour under Unidirectional Melt Flow

材料科学技术（英文）, 1996, 12(2): 156-158.

Constrained Crystal Growth Behaviour under Unidirectional Melt Flow

Shan LIU and Yaohe ZHOU (National Laboratory of Solidification Processing , Northwestern Polytechnical University Xi'an 710072 , China)(To whom correspondence should be addressed)

Melt flow has an important influence on the microstructure formation of alloys. In this paper the growth behaviour of constrained crystals is systematically studied. It is discovered that the constrained crystals have a quite complicated response to melt flow. It may grow upstream or downstream or keep its growth direction unchanged with the influence of melt flow. Also low growth velocity and high flow velocity favour the formation of spike-like crystal. A new model is suggested to explain these experimental results

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Constrained Crystal Growth Behaviour under Unidirectional Melt Flow

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