Hexagonal phases consisting of icosahedral chains/networks in (001) layers in Al-Cr-Si alloys
文献类型：期刊论文
| 作者 | He, ZB ; Kuo, KH |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2004 |
| 卷号 | 373期号:1-2页码:39 |
| 关键词 | DECAGONAL QUASI-CRYSTALS KAPPA-PHASE MN APPROXIMANT SYSTEM FAMILY MODEL NI |
| ISSN号 | 0925-8388 |
| 通讯作者 | Kuo, KH: Dalian Univ Technol, Dept Mat Engn, Dalian 116024, Peoples R China. |
| 中文摘要 | In At-rich Al-Cr-Si alloys with a Si content less than or equal to10at.%, four hexagonal phases, beta (beta-Al9Mn3Si or phi-Al10Mn3 type), mu (mu-Al4Mn type), tau(mu) (Al66Cr28Si6, a = 3.23 nm, c = 1.24 nm), and lambda (lambda-Al4Mn type) have been found by means of transmission electron microscopy. All these phases give pseudo-five-fold electron diffraction patterns and high-resolution electron microscopic images. Together with the hexagonal H-(AlMnBe) with a = 1.2295 nm [Philos. Mag. A 82 (2002) 1495], a tau-inflation relationship exists among the a parameters of the hexagonal phases having the space group P6(3)/mmc, where tau = (1 + root5)/2: a(tau(mu)) congruent to taua(mu) congruent to tau(2)a(mu) congruent to tau(3)a(beta). The crystal structures of beta and mu are known to consist periodically of 2 and 4 + 2 (or 3 + 3) interpenetrated icosahedra, respectively, along the (1 0 0) directions. From this and the tau-inflation relationship of a parameters, the icosahedral chain in H and T(R) possibly consists, respectively, of 4 and 4 + 4 + 2 icosahedra. In addition, these hexagonal phases are layer compounds and their c parameters correspond to 4, 6/12, 12, and 6 layers, respectively, for P, H, L, and T( L). Based on these relationships, structural models for the H and T(L) phases are constructed. Such interpenetrated icosahedral chains also exist in another family of hexagonal approximants, such as kappa-(AlCrNi), lambda-Al4Mn, and nu-(AlCrFe) having the space group P6(3)/m, but these chains are deviated from the (1 0 0) directions and non-periodic. (C) 2003 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/39143]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | He, ZB,Kuo, KH. Hexagonal phases consisting of icosahedral chains/networks in (001) layers in Al-Cr-Si alloys[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2004,373(1-2):39. |
| APA | He, ZB,&Kuo, KH.(2004).Hexagonal phases consisting of icosahedral chains/networks in (001) layers in Al-Cr-Si alloys.JOURNAL OF ALLOYS AND COMPOUNDS,373(1-2),39. |
| MLA | He, ZB,et al."Hexagonal phases consisting of icosahedral chains/networks in (001) layers in Al-Cr-Si alloys".JOURNAL OF ALLOYS AND COMPOUNDS 373.1-2(2004):39. |
入库方式： OAI收割
来源：物理研究所
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