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On the structure of the rhombohedral α′ R ‐phase in Al Zn alloys
Author(s) -
Werner M.,
Ramlau R.,
Löffler H.
Publication year - 1983
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170180505
Subject(s) - trigonal crystal system , transmission electron microscopy , materials science , crystallography , phase (matter) , lattice (music) , micrograph , r phase , electron microscope , range (aeronautics) , electron micrographs , analytical chemistry (journal) , scanning electron microscope , crystal structure , chemistry , optics , microstructure , nanotechnology , physics , composite material , chromatography , organic chemistry , acoustics , martensite
The lattice parameters α p rhand α p rhof precipitates of the rhombohedral α′ R ‐phase grown in two AlZn alloys with 10 and 12 at.% Zn, respectively, at elevated temperatures were determined by transmission electron microscopy (TEM). Two approximative methods were derived to evaluate the Moiré fringes occuring in the TEM micrographs. The results obtained by these two methods agree within the range of experimental error with those presented in the literature (mainly gained from X‐ray methods).