将KKSO多相场模型扩展至三维,通过低层片厚度测试验证了模型建立和参数选择的正确性.利用KKSO三维多相场模型,在低厚度条件下研究了亚共晶、共晶及过共晶合金的三维形态演化.结果表明,三维形态演化与二维类似,当无量纲初始层片间距在0.598-2.336之间变化时,随着初始层片间距的增加,CBr4-C2Cl6共晶合金形态演化的顺序为:层片淹没→稳态生长→层片振荡→层片分叉.由于三维多了第三方向的限制作用,其形态演化的临界值明显低于二维.
参考文献
| [1] | Kurz W,Fisher D J.Fundamentals of Solidification.4th Ed.,Switzerland,Germany,UK and USA:Trans Tech Publication,1998:93 |
| [2] | Davis H S.Theory of Solidification.New York:Cambridge University Press,2001:255 |
| [3] | Jackson K A,Hunt J D.Trans Metall Soc AIME,1966;236:1129 |
| [4] | Ginibre M,Akamatsu S,Faivre G.Phys Rev,1997; 56E:780 |
| [5] | Akamatsu S,Bottin-Rousseau S,Faivre G.Phys Rev Left,2004; 93:175701 |
| [6] | Apel M,Boettger B,Diepers H J,Steinbach I.J Crys Growth,2002; 237:154 |
| [7] | Yang Y J,Wang J C,Zhu Y C,Yang G C.Acta Metal Sin,2006; 42:914(杨玉娟,王锦程,朱耀产,杨根仓.金属学报,2006;42:914) |
| [8] | Yang Y J,Wang J C,Zhang Y X,Zhu Y C,Yang G C.Rare Mater Eng,2008; 37:594(杨玉娟,王锦程,张玉祥,朱耀产,杨根仓.稀有金属材料与工程,2008;37:594) |
| [9] | Karma A,Sarkissian A.Metall Mater Trans,1996; 27A:635 |
| [10] | Kim S G,Kirn W T,Suzuki T,Ode M.J Crys Growth,2004; 261:135 |
| [11] | Mergy J,Faivre G,Guthmann C,Mellet M.J Crys Growth,1993; 134:353 |
| [12] | Kim S G,Kim W T,Suzuki T.Phys Rev,1998; 58E:3316 |
| [13] | Datye V,Langer J S.Phys Rev,1981; 24B:4155 |
| [14] | Clark J N,Edwards J T,Elliott R.Metall Trans,1975;66A:232 |
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