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Determination of the crystal symmetry of two Al–Fe–Si phases by convergent‐beam electron diffraction
Author(s) -
Liu P.,
Dunlop G. L.
Publication year - 1987
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889887086369
Subject(s) - monoclinic crystal system , orthorhombic crystal system , electron diffraction , crystallography , materials science , alloy , diffraction , symmetry (geometry) , crystal (programming language) , group (periodic table) , crystal structure , chemistry , physics , optics , metallurgy , geometry , mathematics , programming language , organic chemistry , computer science
The crystal symmetries of two precipitate phases, q 1 ‐AlFeSi ( C ‐centred orthorhombic) and q 2 ‐AlFeSi (monoclinic), which were discovered in a dilute Al–Fe–Si alloy, have been determined with the use of convergent‐beam electron diffraction (CBED). The space group of q 1 ‐AlFeSi is Cmmm and that of q 2 ‐AlFeSi is Pm .