Abstract
The structural transformations in chromium-molybdenum steel modified by the addition of fullerenes and carbon nanotubes are studied. The modification was performed by high-energy grinding of steel powder with the added fullerenes and carbon nanotubes. Compact samples were obtained through hot compaction of the ground powder. The structural transformations were studied using the X-ray structure analysis, Mossbauer spectroscopy, scanning and transmission electron microscopy, and atomic force microscopy methods. It is shown that the components of steel and carbon additives interact with each other chemically during the course of prolonged grinding, and a nanostructural state is formed. The samples modified with fullerenes and carbon nanotubes exhibit higher ultimate strength and lower plasticity than the unmodified samples. The samples modified with carbon nanotubes have higher strength and plasticity than the samples modified with fullerenes.
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