基于EET理论,计算了Al-Fe-Si合金基体与强化相Al12Fe3Si,Al12(Fe,X)3Si的价电子结构,探讨了价电子结构与合金强化、合金相稳定性的关系及合金元素X对强化相稳定性的影响.结果表明:与基体α-Al相比,强化相Al12Fe3Si,Al12(Fe,X)3Si的n(A)值分别增强了248%,208%～231%,位错运动阻力分别增大2.48倍和2.08～2.31倍,从合金相价电子结构参数n(A)看,溶质原子固溶强化作用弱于析出相的强化作用;合金元素V,Cr,W,Mo,Mn的加入改变了Al12FeSi的价电子结构,使其原子状态组数σ(N)增加了2个数量级,使合金相的稳定性增强,进而延缓了粗化速度;V,Cr,W,Mo,Mn对Al12Fe3Si相稳定性影响的强弱顺序为Cr(Mn)→W(Mo)→V.
参考文献
| [1] | 谭敦强,黎文献,肖于德,王日初,马正青,熊柏清,朱宝宏,张永安.Phase transition of Al-Fe-V-Si heat-resistant alloy by spray deposition[J].中国有色金属学会会刊(英文版),2003(03):568-573. |
| [2] | 金头男,肖于德,黎文献,尹志民,李斗星.Microstructural characteristics of intermetallic phases in |
| [3] | 肖于德 .快速凝固AlFeVSi耐热铝合金组织性能及大规格材料制备工艺的研究[D].中南大学,2003. |
| [4] | Sahoo K L;Das S K;Murty B S .Formation of novel microstructures in conventionally east Al-Fe-V-Si alloys[J].Materials Science and Engineering,2003,A355:193. |
| [5] | Ma Z Y;Tjong S C .High-temperature creep behavior of SiC particulate reinforced Al-Fe-V-Si alloy composite[J].Materials Science and Engineering,2000,A278:5. |
| [6] | 潘复生;张丁非.铝合金及应用[M].北京:化学工业出版社,2006 |
| [7] | Skinner D J;Bye B L .Respersion strengthened Al-Fe-V-Si alloys[J].Scripta Metallurgica,1986,20(06):867. |
| [8] | Lavernia E J;Ayers J D;Srivatsan T S .Rapid solidification processing with specific application to aluminum alloys[J].International Materials Reviews,1991,37(01):1. |
| [9] | Skinner D J;Bye B L;Raybould D;Brown A M .Dispersion strengthened Al-Fe-V-Si alloys[J].Scripta Metallurgica,1986,20(06):867. |
| [10] | Xian Yude;Li Wenxian;Tan Dunqiang;Ma Zhengqing,Wang Bichu .Influence of processing parameters on microstructures and mechanical properties of rapidly solidified AlFeVSi hot-extruded produce[J].Transactions of Nonferrous Metals Society of China,2003,13(03):558. |
| [11] | 王建强;常新春;郝云彦;胡壮麒 .快速凝固Al-Fe-V-Si合金弥散纳米相的价电子结构[J].材料科学研究学报,1998,12(02):175. |
| [12] | 林锦新,庞华,曾梅光.快凝Al-Fe-V-Si-Nd合金中亚稳相Al8Fe4Nd的价电子结构及相变温度[J].东北大学学报（自然科学版）,1999(03):322. |
| [13] | 余瑞璜 .固体与分子经验电子理论[J].科学通报,1978,23(04):217. |
| [14] | 张瑞林.固体与分子经验电子理论[M].长春:吉林科学技术出版社,1993:313. |
| [15] | Guo Yongquan;Yu Ruihuang;Zhang Ruilin;Zhnng Xinhui,Tao Kun .Calculation of magnetic properties and analysis of valence electron structure of LaT(13-x)Al(x)(T=Fe,Co)compounds[J].Journal of Physical Chemistry B,1998,102(01):9. |
| [16] | 刘志林;李志林;刘伟东.界面电子结构与界面性能[M].北京:科学出版社,2002:149. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%