There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality.

Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

I and i

Bulk nanostructured materials from severe plastic deformation

Principles of equal-channel angular pressing as a processing tool for grain refinement

Using high-pressure torsion for metal processing: Fundamentals and applications

Dynamic and post-dynamic recrystallization under hot, cold and severe plastic deformation conditions

Strain-heat methods of obtaining ultrafine-grained (UFG) metallic materials with grain sizes as small as 20 nm and peculiarities of their structure are considered. It is shown that intercrystalline boundaries are the main element of the structure of UFG materials and that they are typically in a non-equilibrium state. The formation of a special grain boundary phase, i.e. a thin near-boundary layer with high dynamic activity of atoms, has been found. This unusual structure leads to the manifestation of promising new elastic, strength, superplastic, damping and magnetic properties of UFG materials.

Structure and properties of ultrafine-grained materials produced by severe plastic deformation

Rapid and low temperature spark plasma sintering synthesis of novel carbon nanotube reinforced titanium matrix composites

Influence of severe plastic deformation on structure and phase composition of carbon steel

Microstructural response of pure copper to cryogenic rolling

: A high-resolution electron-back-scatter-diffraction (EBSD) technique was applied to quantify grain-structure development and texture evolution during/after cryogenic rolling of pure copper. Microstructure evolution was found to be a complex process involving mainly geometrical effects associated with strain and discontinuous recrystallization but also including limited twinning and grain subdivision. Recrystallization was deduced to be static in nature and probably occurred during static storage of the material at room temperature after cryogenic rolling. The texture contained a pronounced {110} brass component; this observation was interpreted in terms of the suppression of cross slip at cryogenic temperatures. In general, cryogenic rolling was found to be ineffective for the formation of a nanocrystalline (NC) structure in pure copper.

Alexander V. Korznikov

Papers

Structure and properties of ultrafine-grained materials produced by severe plastic deformation

Rapid and low temperature spark plasma sintering synthesis of novel carbon nanotube reinforced titanium matrix composites

Influence of severe plastic deformation on structure and phase composition of carbon steel

Microstructural response of pure copper to cryogenic rolling

Microstructural Response of Pure Copper to Cryogenic Rolling (PREPRINT)