Open AccessPhase-field simulation of Non-Isothermal dendritic growth of NiCu alloy
Author(s) -
Wang Ming-guang,
Yuhong Zhao,
Ren Juan-na,
Mu Yan-Qing,
Wei Wang,
Yang Wei-ming,
Li Ai-Hong,
Ge Hong-Hao,
Hua Hou
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.040507
Subject(s) - supercooling , equiaxed crystals , dendrite (mathematics) , péclet number , materials science , isothermal process , radius , alloy , thermodynamics , field (mathematics) , latent heat , phase (matter) , degree (music) , condensed matter physics , mechanics , metallurgy , physics , geometry , mathematics , computer security , computer science , acoustics , pure mathematics , quantum mechanics
Phase-field model is used and The dendrite growth of a Ni-40.83%Cu binaryalloy under were simulated by the model coupled with solute field and temperature field.The effects of solidification latent heat on the growth of equiaxed dendrite, distribution of solute field and temperature field in undercooled liquid alloy were analyzed.The results indicate that the dendritic has well-developed secondary arms as undercooling degree increases.Correspondently, the solute Peclet number and the tip speed increases, the tip radius decreases, and the solute segregation in solid-liquid interface increases. The results agree well with Ivantsov theory.