The role of non-cozonal twinning in the growth of fibrous silicon in strontium-modified Al-Si eutectic

Shamsuzzoha M. and Hogan L.M. (1989) The role of non-cozonal twinning in the growth of fibrous silicon in strontium-modified Al-Si eutectic. Journal of Materials Science, 24 8: 2849-2859. doi:10.1007/BF02385637


Author Shamsuzzoha M.
Hogan L.M.
Title The role of non-cozonal twinning in the growth of fibrous silicon in strontium-modified Al-Si eutectic
Journal name Journal of Materials Science   Check publisher's open access policy
ISSN 0022-2461
Publication date 1989
Sub-type Article (original research)
DOI 10.1007/BF02385637
Volume 24
Issue 8
Start page 2849
End page 2859
Total pages 11
Publisher Kluwer Academic Publishers
Subject 3104 Condensed Matter Physics
2504 Electronic, Optical and Magnetic Materials
2500 Materials Science
Abstract In fibrous growth of impurity-modified Al-Si eutectic, growth flexibility is facilitated by an extremely high twin frequency in the silicon phase. At growth rates near 300 μm sec-1 twinning occurs on all four {1 1 1} twin planes and is restricted to first-order twins. Any pair of twins in a <1 1 0>zone can promote TPRE growth in a <1 1 2> direction and cozonal pairs of <1 1 2> directions can combine to give an effective <1 1 0> fibre axis, whereas <1 1 2> growth from all four twin planes results in a <1 0 0> fibre axis. The silicon fibres contain many twins which do not contribute in determining the fibre axis orientation at a given stage of growth. At lower growth rates the frequencies of different twin systems become unequal and fibre axis orientations can lie anywhere between <1 1 0> and <1 0 0>.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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Created: Tue, 05 Jul 2016, 05:16:51 EST by System User