| Al-Cu-Fe准晶凝固过程的动力学 |
| |
| 引用本文： | 赵东山,郭新勇,沈宁福,郭建,任晨星.Al-Cu-Fe准晶凝固过程的动力学[J].中国有色金属学报,2004,14(5):786-790. |
| |
| 作者姓名： | 赵东山 郭新勇 沈宁福 郭建 任晨星 |
| |
| 作者单位： | 1. 郑州大学材料工程学院,郑州,450002
2. 河南大学特种功能材料重点实验室,开封,475001 |
| |
| 基金项目： | 河南大学校科研和教改项目 |
| |
| 摘 要： | 根据经典的形核理论,对准晶J相及其晶体近似相R相,采用所提出的自由能计算模型,计算并比较了非均质形核方式下的准晶I相及其晶体近似相R相的形核功及形核率.分析表明,从小的过冷直到准晶I相平衡液相面温度(TL=1 130K)下150K的过冷范围,准晶I相都会首先形核,而其晶体近似相尺相不具备从液相中初生形核的动力学条件.
|
| 关 键 词： | 准晶I相 动力学 非均质形核 形核率 |
| 文章编号： | 1004-0609(2004)05-0786-05 |
| 修稿时间： | 2003年9月2日 |
Kinetics of solidification proces of primary AL-Cu-Fe icosahedral quasicrystal phase |
| |
| ZHAO Dong-shan,GUO Xin-yong,SHEN Ning-fu,GUO Jian,REN Chen-xing.Kinetics of solidification proces of primary AL-Cu-Fe icosahedral quasicrystal phase[J].The Chinese Journal of Nonferrous Metals,2004,14(5):786-790. |
| |
| Authors: | ZHAO Dong-shan GUO Xin-yong SHEN Ning-fu GUO Jian REN Chen-xing |
| |
| Affiliation: | ZHAO Dong-shan~1,GUO Xin-yong~2,SHEN Ning-fu~1,GUO Jian~1,REN Chen-xing~1 |
| |
| Abstract: | By using a proposed thermodynamic model for the calculation of the changes of Gibbs free energy during the primary solidification of the icosahedral quasicrystal phase and its approximant crystal phase, the nucleation energies and nucleation rates for the icosahedral quasicrystal phase and its approximant crystal phase are calculated according to the classic theory. The calculation results reveal that the IQC will nucleate primarily when the temperature of the undercooled liquid alloy is in the range of 1 130 K to 980 K. |
| |
| Keywords: | icosahedral quasicrystal phase kinetics heterogeneous nucleation nucleation rate |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
