Study of Distribution of Impurity Atoms in Metallurgical Macrodefects

V.B. Vykhodets; Tatiana Eugenievna Kurennykh; N.U. Tarenkova

doi:10.4028/www.scientific.net/DDF.273-276.707

Paper Titles

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Modelling of Stable Fission Gases Diffusion in UO₂ Nuclear Fuel
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Computational Study of Heat Transfer in Honeycomb Structures Accounting for Gaseous Pore Filler
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Study of Distribution of Impurity Atoms in Metallurgical Macrodefects
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Evolution of the Enriched Layer at the Oxide/Metal Interface during Oxidation of Recycled Steels with Copper and Copper+Nickel Residuals
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The Influence of Deep Cryogenic Treatment after Supersaturation of Al 4.7% Cu Alloy on Transformation during Ageing. Studies of Dilatometry, DSC, Hardness and XRD
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The Influence of Deep Cryogenic Treatment on Transformation during Tempering of Quenched D2 Steel. Studies oF XRD, Structures, DSC, Dilatometry, Hardness and Impact Energy
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Coupled FEM-BEM Approach for Axisymetrical Heat Transfer Problems
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Study of Distribution of Impurity Atoms in Metallurgical Macrodefects

Abstract:

Using nuclear microanalysis (NRA) and electron probe microanalysis (EPMA), concentrations of carbon, oxygen, nitrogen, aluminum, and vanadium were measured on a large group of macrodefects formed in the course of smelting titanium alloys. A remarkable enrichment of the defect material in oxygen and nitrogen atoms was detected; histograms of defect distribution over the concentrations of oxygen, nitrogen, aluminum, and vanadium were obtained. The above results agree with the concepts according to which the defects are formed from the particles that have the melting temperature higher then the temperature of smelting.