Mechanical Properties of Nano- and Submicrocrystalline Iron Subjected to Severe Plastic Deformation by Friction

摘要

By using nanoindentation technique relationship between microstructure and mechanical parametersudsuch as nanohardness Hh, plasticity characteristic A, and Young’s modulus E were found to be dependentudon the grain size of the -Fe subjected to severe plastic deformation by friction (SPDF) with argon atmosphere.udUnlike fcc-metals in which the decreasing of grain size to 20 nm results in hardness growth accompaniedudby decreasing the plasticity, it was found the reverse effect in bcc-Fe, i.e. decreasing the grain sizeudfrom 50 to 20 nm caused the decrease of hardness and increase of plasticity. Moreover, the decrease ofudYoung’s modulus E with decreasing the grain size down to 20 nm was detected in nanoindentation experiments.When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35149