中國有色金屬學(xué)報(bào)(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 12 No. 1 February 2002 |
Assessment of scaling factor in
modified dendrite growth model
modified dendrite growth model
ZHANG Rui-feng(張瑞豐)，SHEN Ning-fu(沈?qū)幐?，CAO Wen-bo(曹文博)
（Research Center for Materials,Zhengzhou University,
Zhengzhou 450002, China）
Abstract:A model for dendrite growth during rapid solidification was established on the basis of BCT model and marginal stability criterion through modified Peclet numbers.Taking into account the interaction of diffusion fields, including solute diffusion field and thermal diffusion field around the dendritetip,the model obtain a satisfactory results to predict the dendrite velocity and the tipradius,which agrees well with the experimental data from references in Cu-Ni alloy.
Key words: rapid solidification;undercooled melt;dendrite growth;Cu-Ni alloy
