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Information × Registration Number 0208U006748, 0106U002155 , R & D reports Title Nanosized structures on iron surface formed by severe plastic deformation with nitrogen diffusion popup.stage_title Head Belots'ky Aleksey Vasilevich, Registration Date 22-12-2008 Organization National Technical University of Ukraine "Kiev Polytechnic Institute", Mechanical Building Institute, chair Resistance of Materials popup.description2 Specific features of iron structure, subjected to severe plastic deformation (SPD) by friction with argon-gas and that with ammonia nitriding atmosphere, were studied by using metallography, X-ray diffraction analysis, scanning (SEM) and transmission electron microscopy (TEM) observations. Based on the investigations of structural features of various sections in the surface layer of iron the distribution of severe plastic deformation level was determined. It is found that grain refinement process and diffusion of dissolved atomic nitrogen in iron influence by each other. By using nanoindentation technique relationship between microstructure and mechanical parameters such as hardness, plasticity characteristic, and Young's modulus were found to be actually dependent on the grain scale of а-Fe samples subjected to SPD by friction. Product Description popup.authors popup.nrat_date 2020-04-02 Close