Multiple silicon nanotwins formed on the eutectic silicon particles in Al-Si alloys

被引：14

作者：

Liu, C. H. ^{[1
]}

Chen, J. H. ^{[1
]}

Li, C. ^{[1
]}

Wu, C. L. ^{[1
]}

Li, D. Z. ^{[2
]}

Li, Y. Y. ^{[2
]}

机构：

[1] Hunan Univ, Ctr High Resolut Electron Microscopy, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China

[2] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China

来源：

SCRIPTA MATERIALIA | 2011年 / 64卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Aluminum alloys; Twin; Silicon particles; Precipitation; ALUMINUM; GROWTH;

D O I：

10.1016/j.scriptamat.2010.10.030

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Multiple precipitating nanotwins of {1 1 1}/[1 1 2] type have been observed forming on the eutectic Si particles in Al-Si alloys upon annealing. High-resolution transmission electron microscopy (HRTEM) reveals that these precipitating nanotwins may possess very rich microstructures, including 5-fold nanotwins and various twin junctions. The formed Si nanotwins are very thin objects that are naturally appropriate for HRTEM observations. It is very likely that the formation and the morphology of the nanotwins are related to the aging conditions. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：339 / 342

页数：4

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