Cu-2.0Fe合金等温处理过程中富Fe析出相的形态演变

陈凯旋, 李宗烜, 王自东, Demange Gilles, 陈晓华, 张佳伟, 吴雪华, Zapolsky Helena

Morphological Evolution of Fe-Rich Precipitates in a Cu-2.0Fe Alloy During Isothermal Treatment

CHEN Kaixuan, LI Zongxuan, WANG Zidong, Demange Gilles, CHEN Xiaohua, ZHANG Jiawei, WU Xuehua, Zapolsky Helena

图7 相场模拟结果显示Cu-Fe体系(平均Fe浓度c¯ = 0.02)在984℃下单个富Fe析出相的二维形态演变(初始状态为半径R = 4Δx (Δx为栅格间距)的球状纯Fe晶核，模拟盒子尺寸为10242)

Fig.7 Morphological evolutions of the Fe-rich single precipitate in Cu-Fe system with an average Fe concentration c¯ of 0.02 at 984oC obtained in phase field modeling (The figures show the concentration fields of Fe-rich precipitate at different time steps t*. Initial configuration contains an iron pure spherical nucleus of radius R = 4Δx, in which Δx is the grid spacing. The size of the simulation box is 10242) (a) t* = 1000 (b) t* = 20000 (c) t* = 70000 (d) t* = 100000 (e) t* = 150000 (f) t* = 200000