| 共晶生长的溶质扩散解 |
| |
| 引用本文： | 陈溯,王海丰,刘峰.共晶生长的溶质扩散解[J].西安工业大学学报,2014(2):142-145. |
| |
| 作者姓名： | 陈溯 王海丰 刘峰 |
| |
| 作者单位： | 西北工业大学凝固技术国家重点实验室,西安710072 |
| |
| 摘 要： | 为解决经典共晶生长模型中三相交界线处成分偏离共晶点成分的问题,引入了三相交界线动力学条件,得到了平界面生长条件下化学计量化合物-化学计量化合物(SC-SC)型共晶系溶质扩散方程的精确解.基于平均溶质守恒假设得到了适用于任意凝固条件、共晶系和共晶相图的溶质扩散方程的通解.CuZr-Cu5Zr8共晶系的计算结果证实了溶质扩散方程通解的有效性.
|
| 关 键 词： | 共晶生长模型 溶质扩散 快速凝固 合金 |
Solution of Solute Diffusion in Eutectic Growth |
| |
| Authors: | CHEN Su WANG Hai-feng LIU Feng |
| |
| Affiliation: | ( State Key Laboratory of ,Solidification Processing, Northwestern Polytechnical Universit y, Xi ＇ an 710072, China) |
| |
| Abstract: | To solve the problem that the eutectic composition at the triple-junction （TJ） deviates from the eutectic composition ,the kinetics of triple-junction is used as the boundary condition in this study . An exact solution for the solute diffusion of SC-SC eutectic is derived firstly for a planar interface . Adopting an averaged conservation law at the interface ,a general solution is proposed for any kind of eutectics and phase diagrams .The validity of the general solution is verified by the simulation results in the CuZr-Cu5 Zr8 eutectic growth . |
| |
| Keywords: | eutectic grow th model solute diffusion rapid solidification alloys |
| 本文献已被 CNKI 维普 等数据库收录！ |
