TY - JOUR
T1 - Multiphase field modeling of the eutectic growth at varying velocity
AU - Zhu, Yaochan
AU - Wang, Jincheng
AU - Yang, Gencang
AU - Zhao, Dawen
PY - 2007/2
Y1 - 2007/2
N2 - By multiphase field model, the stable and non-stable growths of eutectic CBr4-C2Cl6 alloy are simulated. The simulated results of stable growth are accordant with Jackson-Hunt's eutectic theory, which proved that the model is reliable. For the non-stable growth under varying growth velocity, the results show that during step increase or step decrease in velocity, the mechanism of the lamellar spacing adjustment is through abrupt lamellar branching or progressive merging and annihilation accompanied the growing up by itself, respectively, moreover, there exists strong asymmetry between these two processes during lamellar adjustment. At the moment of step changing in velocity, the adjustment of lamellar spacing, the changes of average velocity and average interface undercooling have all the hysteresis effect.
AB - By multiphase field model, the stable and non-stable growths of eutectic CBr4-C2Cl6 alloy are simulated. The simulated results of stable growth are accordant with Jackson-Hunt's eutectic theory, which proved that the model is reliable. For the non-stable growth under varying growth velocity, the results show that during step increase or step decrease in velocity, the mechanism of the lamellar spacing adjustment is through abrupt lamellar branching or progressive merging and annihilation accompanied the growing up by itself, respectively, moreover, there exists strong asymmetry between these two processes during lamellar adjustment. At the moment of step changing in velocity, the adjustment of lamellar spacing, the changes of average velocity and average interface undercooling have all the hysteresis effect.
KW - Directional solidification
KW - Eutectic
KW - Growth at varying velocity
KW - Multiphase field modeling
UR - http://www.scopus.com/inward/record.url?scp=34147205966&partnerID=8YFLogxK
M3 - 文章
AN - SCOPUS:34147205966
SN - 0412-1961
VL - 43
SP - 194
EP - 198
JO - Jinshu Xuebao/Acta Metallurgica Sinica
JF - Jinshu Xuebao/Acta Metallurgica Sinica
IS - 2
ER -