Abstract
An assessment is made of the potential for direct lattice imaging to be used for the determination of local chemical composition in alloys by localized lattice parameter measurements. The principle involves correlation of electron microscopy lattice fringe image spacings with composition. It is found that in favorable circumstances (e.g., Fe-C, Al-Cu, Au-Ni) composition differences of the order of 3 pct can be detected with a resolution of 20A. In addition the results indicate that for many cases the method both has higher resolution and is more precise than currently available, alternative analytical techniques. Whilst the results are very encouraging, the role of electron optical and lattice constraint effects must be examined in more detail to allow general application of the method, especially for the case of multiphase systems involving large interfacial strains
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Sinclair, R., Thomas, G. Determination of local composition by lattice imaging. Metall Trans A 9, 373–379 (1978). https://doi.org/10.1007/BF02646387
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DOI: https://doi.org/10.1007/BF02646387