Abstracts:
Zamyatin V.M., Baum B.A. On the Issue of Metallurgical Heredity and Formation of Metal Product Properties
The article gives a review of modern possibilities of action on alloys in liquid state to produce metal products with improved properties therefrom.
Key words: metallurgical heredity, structure, interatomic bonds, microinhomogeneity, nonequilibrium system.
Skripnik S.V. Methods of Controlling the Formation of Crystalline Macrostructure of Centrifugal Electroslag Castings
The construction of fluidizer electro-slag welding of consutrodes of ESHP is considered from the elements of round or rectangular sections. The possible is long consutrodes of 2…5 m depending on the type of in-use electro-slag stove. Technical description of setting of УСЭ 100 is given. Original appearance of the collected (cooked) consutrode is presented by long 3,5 m mass of 0,75t from a threadbare instrument and smelted on the stove of Т-100 party of stamp purveyances.
Key words: electroslag casting, crystalline structure, columnar crystals, solidification structure, hot tears.
Yevstigneyev A.I., Muravyov V.I., Dmitriyev E.A., Frolov A.V., Bashkov O.V., Tarasov Y.A. Evaluation of Phase Changes in Grade 30ХГСА Steel during Acoustic Emission Heat Treatment
There are the results of research the 30XGSA steel austenite transformation to acoustic emission parameters during heating steel. It is determinated the acoustic emission parameters, which show more compete information about the austenite transformation.
Key words: acoustic emission, austenite transformation, heat treatment, 30XGSA.
Afanasiev V.K., Gorshenin A.V., Рopova M.V., Prudnikov A.N., Starostinа M.A. About influence of silicon on thermal expansion of aluminium А7
In work influence of silicon on factor of linear expansion of aluminium and its alloys containing from 1 up to 50% of silicon is considered. It is installed, that application of silicon in lots is not perspective. It is offered to pay special attention on application of various technological receptions for reception of aluminium and its alloys with controllable thermal expansion.
Keywords: aluminium, silicon, expansion, alloying, anomaly, alloys.
Krushenko G.G. Building the volume model of dendrite ?-Al solid solution of hypoeutectic aluminium-silicon alloy
The volume model of dendrite α-Al solid solution of hypoeutectic aluminiumsilicon alloy is presented.
Key words: hypoeutectic aluminium-silicon alloys, dendrite α-Al solid solution.
Kuvshinova N.N., Kazakov Y.V. Formation of Added Metal at Exothermal Welding of Small Defects in Steel Castings
Influence of temperature of heating of a detail on forming deposited metal is investigated during thermit welding of superficial defects. It is established, that at heating of a zone of defect up to temperature 850…900°C thermit welding of small superficial defect provides full connection of deposited metal with the core.
Keywords:Thermit welding, superficial defect, temperature of heating.
Vladov V.A., Kolesov A.A., Lukovnikov D.A., Korobeinikov V.V. Experience of Using Reduced Sinkhead Portion of Forge Ingot at OOO "SSM-Tyazhmash"
In this article three options for the use of exothermic / insulating materials in the manufacture of ingots are proposed. On the example of the company "SSM-Tyazhmash", LTD, the stages of exothermic mat and the coating mixture in the manufacture of forging ingots are described: an analysis of casting and solidification of the ingots, the numerical simulation of mold filling and solidification of ingots with different effects of process parameters, making riser's extension and taking into consideration an exothermic materials, conducting experiments, research and industrial application.
Muraviev V.I., Bakhmatov P.V., Melkostupov K.A., Melnichuk A.F. Influence of fraction thermal-diffusion interaction activation process in cold-pressed feedstock
The significant discrepancy of after pressing elastic recovery was detected. Compaction and ring area stability regularities depend on diffusion interaction temperature. It was found that there is a specific pressure limit for powdered materials causing maximum amount of shrinkage and compaction by diffusive interaction activation during sintering. There were educed optimal regimes for part pressing and sintering ensuring diffusion interaction high intensity and thickness, as well as dimension stability and satisfactory mechanical characteristics similar to whole metal part characteristics.
Key words: cold pressing, imitation specimen, regime of sintering, stages of sintering process, compaction, degasification, porosity.
Abuzin Yu.A., Skrobotova E.Yu., Obsjannikova N.Yu. Additional energy accumulation processes investigation in mechanoactivated powders of Ni-Al system
Authors offer a technique of an estimation of the amount of addition energy saved up in the powders subjected to mechanical activation through definition of speed of distribution of front in one dimensional process of self-extending allocation of this energy. The technique is tested on chemically active powder mixes of Ni - Al system, mixed in a parity of reactions of synthesis of NiAl3, NiAl and Ni3Al. In these conditions process of self-extending allocation of energy is realized in the form of process of self-extending high-temperature synthesis.
Key words: mechanical activation, energy accumulation, reaction front propagation velocity, chemical synthesis.
Table of Content:
Golubovich A.D., Idrisov A.B., Inozemtsev V.L., Titov B.Y., Shpigel M.M. Way Out of the Crisis: Abandonment of the Raw Materials Model. New Industrialization
MELTING. MELT TREATMENT
Zamyatin V.M., Baum B.A. On the Issue of Metallurgical Heredity and Formation of Metal Product Properties
Skripnik S.V. Methods of Controlling the Formation of Crystalline Macrostructure of Centrifugal Electroslag Castings
MODERN MATERIALS
Yevstigneyev A.I., Muravyov V.I., Dmitriyev E.A., Frolov A.V., Bashkov O.V., Tarasov Y.A. Evaluation of Phase Changes in Grade 30ХГСА Steel during Acoustic Emission Heat Treatment
Afanasiev V.K., Gorshenin A.V., Рopova M.V., Prudnikov A.N., Starostinа M.A. About influence of silicon on thermal expansion of aluminium А7
Krushenko G.G. Building the volume model of dendrite ?-Al solid solution of hypoeutectic aluminium-silicon alloy
XXI CENTURY TECHNOLOGIES
Kuvshinova N.N., Kazakov Y.V. Formation of Added Metal at Exothermal Welding of Small Defects in Steel Castings
Vladov V.A., Kolesov A.A., Lukovnikov D.A., Korobeinikov V.V. Experience of Using Reduced Sinkhead Portion of Forge Ingot at OOO "SSM-Tyazhmash"
Muraviev V.I., Bakhmatov P.V., Melkostupov K.A., Melnichuk A.F. Influence of fraction thermal-diffusion interaction activation process in cold-pressed feedstock
Abuzin Yu.A., Skrobotova E.Yu., Obsjannikova N.Yu. Additional energy accumulation processes investigation in mechanoactivated powders of Ni-Al system
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