The effect of intense external influences on the structure and properties of alloys

For the production of special high-wire thin and very thin sections austenitic steel has been widely adopted.Developed carbon-free highly alloyed Fe-Cr-Ni based steel in the quenched condition has a high plasticity,manufacturability and low strength. High adaptability of these steels allowed conducting extensive plasticdeformation as shear under pressure and drawing. Prerequisite for a high plasticity and adaptability of thedeveloped steels are: their doping with low carbon, 0.03% C, as well as cobalt and nickel content, whichincrease the plasticity of steels. Secondly, the presence of strain-metastable austenite, which during severeplastic deformation is almost completely transformed into deformation martensite and the related TRIP-effect.Especially important is the fact that thanks to high steels manufacturability, the effect of severe plasticdeformation leads to the formation of submicro- and nanocrystalline structure (mainly with high-anglemisorientations at grain boundaries with high strength) in long workpieces. The aging of the deformed steelscauses an additional increase of mechanical properties, which is associated with the occurrence of asupersaturated BCC solid solution (strain martensite). The resulting allocation of intermetallic phase NiAl isnanocrystalline, which is especially important in obtaining the finest wire diameters. It should be noted thatageing can be performed on finished products

Rubinstein-Taybi Syndrome at a 4-year-old child: a clinical case

The aim of the article is to present clinical experience of studying the patient with a genetic syndrome of Rubinstein — Taybi at the department of Hospital Pediatrics at Saratov Clinical Hospital n.a. S. R. Mirotvortsev. It is necessary to mention that the described pathology is a rare autosomal dominant disease shown by plural developmental anomalies and determines great attention from the practical point of view.</p