Modeling grain refinement for undercooled single-phase solid-solution alloys
作者： Haifeng Wang , Feng Liu , Yiming Tan
DOI: 10.1016/J.ACTAMAT.2011.04.021
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摘要: Abstract A grain-refinement model for rapid solidification of undercooled single-phase solid-solution alloys was developed in which a combination the dendrite fragmentation with overall kinetics allows to occur along process (e.g. during mushy zone solidification). Compared Karma’s model, break-up time as well interdendritic liquid be solidified completely can predicted. Thus, predict, absence experimental data plateau duration), microstructure transition. The applied describe Ni–15 at.% Cu alloy, and good agreement between predictions results obtained. On this basis, effects capillarity back-diffusion on solidification, cooling rate prediction transition, were found.
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