Papers accepted for publication

Bulk ceramic materials based on B4C–ZrB2 systems have been produced by means of pressure-assisted self-propagating high temperature synthesis (SHS) using a mixture of elementary powders B, C and Zr. The influence of reaction mixture composition on microstructure formation and physical and mechanical characteristics of SHS composites have been studied by X-ray diffraction and microstructural analysis.

Synthesis and Characteristics of the B4C–ZrB2 Composites

V.A. Shcherbakov, A.N. Gryadunov, M.I. Alymov
Journal section: Structure design and analysis
The new type of core-shell structures of antimony ranging from 10-4 to 10-6 m, obtained in a single-stage process as a result of spontaneous crystallization of the melt at average cooling rates of the melt are 1 – 100 K/second. The structures consist of different forms of the same substance, whereas the core is represented by the mono-crystalline gray antimony and the shell is a deformed two-dimensional film.

Structural heterogeneities and electronic effects in self-organized core-shell type structures of the Sb

T.V. Kulikova, L.A. Bityutskaya, A.V. Tuchin, E.V. Lisov, S.I. Nesterov, A.A. Averin, B.L. Agapov
Journal section: Structure design and analysis
Twin-oriented bands up to 20 m in width appear near grain boundaries of coarse-grained aluminum during single pass of dynamic channel angular pressing. Analysis of their deviations from the ideal twin misorientation showed that they could be formed both at an early and at a later stage of deformation.

Twinning in polycrystalline aluminium deformed by dynamic channel angular pressing

N. Zolotorevsky, V. Rybin, E. Ushanova, I. Brodova, A. Petrova, N. Ermakova
Journal section: Structure design and analysis
A superconducting multifilament wire made of Nb-Ti alloy was investigated by methods of atom probe/field ion microscopy, three-dimensional atom probe, high resolution electron microscopy (HREM) and computer simulation. Figure shows a HREM micrograph of the coherent interphase boundary with an ideal conjugation of atomic planes of adjacent grains.

Microstructure of NbTi superconducting alloy

M. Lazareva, A. Mazilov, V. Ksenofontov, T. Mazilova, J. Gordienko, O. Dudka, I. Mikhailovskij
Scanning electron microscopy was used to study the behavior during annealing of iron, in which an ultrafine structure of two different types was created by deformation under high pressure: cellular and submicrocrystalline. The figure shows orientational maps (EBSD) of iron with different initial type of structure after annealing at 750 ° C, 1h.

Effect of microcrystallites formed by deformation on the growth and orientation of grains during recrystallization of iron

L. Voronova, M. Degtyarev, T. Chashchukhina, D. Shinyavskii, T. Gapontseva
Journal section: Structure design and analysis