Open AccessThree-dimensional multi-phase field numerical simulation of the morphology selection of eutectic CBr4-C2Cl6 alloy with different pulling velocities
Author(s) -
Yang Yu-Juan,
Jincheng Wang,
Yang Gencang,
Yuxiang Zhang,
Yue Zhu
Publication year - 2009
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.58.2797
Subject(s) - eutectic system , supercooling , materials science , growth velocity , morphology (biology) , directional solidification , hysteresis , phase diagram , alloy , phase (matter) , interface (matter) , diagram , thermodynamics , mechanics , metallurgy , geology , composite material , condensed matter physics , physics , statistics , mathematics , paleontology , quantum mechanics , medicine , capillary number , capillary action , endocrinology
By using the KKSO multiphase field model, the fixedvelocity growth and velocitychanging growth of directional solidification for eutectic CBr4C2Cl6 alloys are simulated in three dimensions to reproduce the morphology evolution and selection. The diagram of the eutectic morphology selection is further established. The changes of the average interface velocity and the average interface undercooling during velocitychanging growth are also studied. The simulation results show that the eutectic morphology selections both before and after velocity change are the same as the morphology selection in the case of fixed pulling velocity. For all of the eutectic morphology selections, changes of the average interface velocity and the average interface undercooling show the hysteresis effect. It's also found that the relationship between the average interface velocity and the average interface undercooling is in good agreement with the theoretical prediction.