Structure and Hardness Variations Through Section of Hot-Forged Pipe Billet from PT-1M Alloy

In this paper structure and hardness variations through the section of the hot-forged pipe billet from the PT-1M alloy were studied by the methods of macro, micro, X-ray structural and durometric analyzes. A coarse nonuniform structure through sections of the pipe billet and the relationship between the structure and the hardness were established.     Keywords: titanium alloy PT-1M, hot deformation, macrostructure, microstructure, hardness

Relationship Between Structure and Properties of the Large-Size Billet of Titanium Alloy PT-7M

In this paper the interrelation between the structure, hardness and strain resistance at 875 ∘C of the hot-forged pipe billet of the titanium alloy PT-7M (Ti-2.2Al-2.5Zr) was studied by the methods of macro, micro, XRDA, durometric analyzes and hot upsetting operation at 875 ∘C. It was found, that the volume fraction of the large grains reduced and recrystallized from the center to the surface of the pipe billet. As a result, hardness and strain resistance grew at 875 ∘C from the center to the surface of the billet.     Keywords: titanium alloy PT-7M, hot deformation, phase composition, structure, texture, hardness, strain resistance

CULTURAL-MORPHOLOGICAL PROPERTIES OF BRUCELLA AT THE STAGES OF L-TRANSFORMATION

Cultural-morphological properties of Brucella are studied, during L-transformation on solid, nutrient media with increasing antibiotic concentration and visualization of morphology features of cells with various passages is presented, by light phase-contrast microscopy. Differences of cultural-morphological properties of Brucella L- and S-forms are shown

Structure and Properties of the Billet of PT-1M Alloy after Expanding

In this paper the macro-, microstructure, the hardness and the modulus of elasticity for the billet of the PT-1M alloy after expanding was studied. It was shown the expanding resulted to grain refinement near inner surface of the billet due to the recrystallization. The relationship between the structure through sections, the hardness and the modulus of elasticity was established.     Keywords: titanium alloy PT-1M, expanding, macrostructure, microstructure, hardness, modulus of elasticit

Determination of Characteristic Temperatures and their Relationship with the Chemical Composition in Titanium Alloy PT-7M

In the work, using the program for thermodynamic calculations Thermo-Calc, the polymorphic (a+b-b)-transformation (Tpt), solidus (Tsol), liquidus (Tliq) temperatures in the a-alloy PT-7M in range of alloy composition were determined and their relationship with the chemical composition of the alloy through the proposed “aluminum equivalents” Alekv Tpt, Alekv Tsol, Alekv Tliq was established.В работе с использованием программы для термодинамических расчетов Thermo-Сalc определены температуры полиморфного (a+b-b)-превращения (Тпп), солидуса (Tsol), ликвидуса (Tliq) в a-сплаве титана ПТ-7 М в пределах марочного состава и установлена их взаимосвязь с химическим составом сплава через предложенные «алюминиевые эквиваленты» Alэкв Tпп, Alэкв Tsol, Alэкв Tliq.Исследование выполнено по гранту при финансовой поддержке Российского научного фонда (проект № 18–79–10107)

Evidence from Identified Particles for Active Quark and Gluon Degrees of Freedom

Measurements of intermediate pT (1.5 < pT < 5.0 GeV/c) identified particle distributions in heavy ion collisions at SPS and RHIC energies display striking dependencies on the number of constituent quarks in the corresponding hadron. One finds that elliptic flow at intermediate pT follows a constituent quark scaling law as predicted by models of hadron formation through coalescence. In addition, baryon production is also found to increase with event multiplicity much faster than meson production. The rate of increase is similar for all baryons, and seemingly independent of mass. This indicates that the number of constituent quarks determines the multiplicity dependence of identified hadron production at intermediate pT. We review these measurements and interpret the experimental findings.Comment: 8 pages, 5 figures, proceedings for SQM2006 conference in Los Angele

Evaluation of T2G band intensity distribution across a surface of an UO2 ceramic

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