Open AccessPhase field modeling of directional solidification of a binary alloy at high velocities
Author(s) -
Meie Li,
Yang Gencang,
Yaohe Zhou
Publication year - 2005
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.54.454
Subject(s) - directional solidification , binary alloy , materials science , alloy , planar , instability , trapping , thermodynamics , redistribution (election) , binary number , phase (matter) , mechanics , field (mathematics) , condensed matter physics , physics , metallurgy , ecology , computer graphics (images) , arithmetic , mathematics , politics , computer science , political science , pure mathematics , law , biology , quantum mechanics
Some computational results on directional solidification of a binary alloy obtained by using the phase field model are reported. Frozen temperature approximatio n is adopted to simplify the modeling. The onset of morphological instability, t he pattern evolution and the solute redistribution are shown. The cell to planar interface transition is modeled near the high velocity absolute stability condi tion. The cell spacings, tip temperatures and solute partitioning coefficients a t different velocities are calculated. The solute trapping is also observed.