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research papers
Changes of particle size and strain during annealing of cold-worked aluminum powders have been determined by measuring X-ray line breadths. Aluminum powders ground under special conditions show a decrease in particle size as well as a reduction of strains within certain ranges of temperature. This is due to polygonization processes and allows conclusions to be drawn regarding the limits of coherent regions of X-ray diffraction. The X-ray measurements were supplemented by electron microscope studies.