Crystal structure of an orthorhombic phase in beta-(Al-Fe-Si) precipitatesdetermined by convergent-beam electron diffraction

Authors
Zheng, JG Vincent, R Steeds, JW
Citation
Jg. Zheng et al., Crystal structure of an orthorhombic phase in beta-(Al-Fe-Si) precipitatesdetermined by convergent-beam electron diffraction, PHIL MAG A, 80(2), 2000, pp. 493-500
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS ANDMECHANICAL PROPERTIES
ISSN journal
13642804 → ACNP
Volume
80
Issue
2
Year of publication
2000
Pages
493 - 500
Database
ISI
SICI code
1364-2804(200002)80:2<493:CSOAOP>2.0.ZU;2-1
Abstract
It has been found that the beta-(Al-Fe-Si) precipitate with approximate com position Al5FeSi and lamellar microstructure is not a single-phase compound but a multiphase composite. An orthorhombic phase has been identified from the precipitate and its crystal structure determined by means of convergen t beam electron diffraction. This phase has an orthorhombic A-centred latti ce with parameters a = 6.18 Angstrom, b = 6.20 Angstrom and c = 20.8 Angstr om, point group mmm and space group Amam, equivalent to Cmcm (No. 63) in st andard notation.