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The initial stages of ordering in alloys studied by electron diffraction and high resolution microscopy
Author(s) -
Tendeloo G. Van
Publication year - 1980
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1111/j.1365-2818.1980.tb04083.x
Subject(s) - electron microscope , resolution (logic) , diffraction , electron diffraction , microstructure , materials science , crystallography , high resolution , electron , dark field microscopy , sequence (biology) , microscopy , chemistry , optics , physics , geology , computer science , biochemistry , remote sensing , quantum mechanics , artificial intelligence
SUMMARY The combined use of selected area electron diffraction and high resolution electron microscopy can provide important information about the microstructure of materials. Both techniques have been applied to study the ordering behaviour in a number of alloys. The ordering process is not always straightforward and mostly intermediate long period modulated structures are formed. Using dark field high resolution electron microscopy the ordering sequence as well as the structure of the intermediate phases have been established for Au 4 Mn and Au 5 Mn 2 . For Ni 4 Mo the high resolution observations provide new information about the ordering mechanism in its very earliest stages.