Gushchin N.S. Hardenability of wear-resistant white irons. Part 1
An analytical review of research works on the casting of wear-resistant white irons with a martensitic or martensitic-austenitic structure is given. The effect of alloying elements and crystallization conditions on the hardenability of wear-resistant white irons was studied in order to form the required primary cast structure and provide the secondary phase recrystallization during heat treatment. A new method to increase the hardenability of wear-resistant irons is presented, which makes it possible to produce a martensitic or martensitic-austenitic structure in castings with a wall thickness of up to 200 mm made from these alloys in the cast state.
Keywords:White iron, alloying elements, heat treatment, hardenability, wear resistance, hardness, martensite, austenite, metal structure, pearlitic and martensitic transformations, casting, nodular graphite.

Malinov L.S. Increased abrasive wear resistance of cast iron by obtain multiphase structure with metastable austenite
It has been shown that increasing abrasive wear resistance of cast irons provides for obtaining a multiphase metastable structure in which, along with tempering martensite, or bainite, carbides, graphite is present metastable austenite, undergoing dynamic deformation martensite transformation - DDMP (self-hardening effect at loading - SHL). Controlling the amount and stability of austenite, respectively the development of DDMP to optimize it in relation to specific wear conditions makes it possible to increase abrasive wear resistance to the greatest extent. Metastable austenite is considered as a smartstructure, which is the internal resource of the alloys themselves.
Keywords:Cast iron, hardening, martensite lower bainite, graphite metastable austenite, abrasive wear resistance

Verin A.S. The resistance to hot corrosion of not alloyed Ni3Al
The resistance to hot corrosion of said not alloyed intermetallid is very high. Exsample, through 750…800 hours experiment at the temperature 1200?C the process of oxidation is strongly slowing. After 1000 hours sustain at this temperature the process, practically, to finish. The experiment was done on samples with dendrite and cellular structures obtained by dosed directional solidification (DDS) method. Probably, in future it will be observed some different of changing values of the weight of material is depending from the microstructure (equaxis, directed, monocrystal, DDS).
Key words:Intermetallid, microstructure, method of obtaining, DDS, regime.

Marukovich E.I., Stetsenko V.Y., Stetsenko A.V. Mechanisms for modification of cast magnesium alloys
It is shown that the main modifiers of foundry magnesium alloys cannot form heterogeneous centers of crystallization of ?-phase microcrystals in melts. The concentration of adsorbed hydrogen in molten magnesium alloys is proportional to the concentration of dissolved hydrogen. It is shown that adsorbed hydrogen is a demodifying element of structures in castings of foundry magnesium alloys. Their modification is an adsorption-nanostructural process. The mechanism of action of modifiers is the binding of dissolved hydrogen by adsorption and the formation of hydrides. This process makes it possible to reduce the concentration of adsorbed hydrogen and increase the concentration of crystallization centers of ?-phase microcrystals in foundry magnesium alloys. Superheating modification is an adsorption-desorption process of hydrogen atoms on nanocrystals in melts. The mechanism of modification by overheating is to reduce the concentration of adsorbed hydrogen due to the predominance of the processes of desorption of hydrogen atoms from elementary magnesium and aluminum nanocrystals in liquid magnesium-aluminum alloys.
Keywords:Cast magnesium alloys, modification, melts, crystallization, overheating, adsorption, hydrogen, nanocrystals.

Semyonov K.G., Batyshev K.A., Svinoroev Yu.A. Investigation of an effect of alloying elements on the processing characteristics of low-alloyed copper
Low-alloy copper-based alloys have good thermal and electrical conductivity combined with higher mechanical properties. The electrical conductivity and tendency to oxide spots formation in copper alloyed with iron, nickel, silicon, and tin was studied. The effect of the content of alloying elements (up to 1%) on the processing characteristics of copper has been assessed.
Keywords::Low-alloyed copper, alloying elements, shaped castings, processing characteristics, electrical and thermal conductivity, oxide spots formation.

Kokovin P.L., Maltseva T.V., Ovsyannikov B.V. Mastering the technology of casting large-sized slabs ingots from aluminum-lithium alloy
Lithium is the lightest element among the components used for alloying industrial aluminum strained alloys. In addition to low density and increased rigidity, aluminum-lithium alloys have high strength characteristics and resistance to weariness loads. The need to use large-sized rolled or rolled semi-finished products appeared with the development of aviation. Specialists of OJSC "KUMZ" carried out a series of works on the development of a technology for casting a new Al-Cu-Mg-Li-alloy and obtaining large-sized flat slabs from it. The developed alloy has significantly higher properties than traditional alloys. Products from this alloy are an ideal structural material for use in the aircraft industry.
Keywords:Aluminum-lithium alloys, large-sized slabs, casting technology, structure, mechanical properties.

Prusov E.S. Resource saving in the manufacturing and exploitation of products from cast composite materials
The experience of the manufacturing and operation of the products from the cast composite materials for the needs of machine-building and extractive industries is presented. A general characteristic of different types of waste generated during the production of castings from metal matrix composites is provided. Rational approaches to recycling defective castings and fragments of gating systems, slag, and chips from the machining of castings and ingots from composite materials based on aluminum alloys are outlined.
Key words:Cast composite materials, industrial implementation, resource saving, production waste, recycling.

Alekseev I.A., Sergeev D.V., Chumanov I.V. To the possibility of converting the A-550 electroslag furnace to direct current
An automation scheme has been developed and the A-550 semi-industrial electroslag furnace has been switched to direct current with the possibility of rotating the consumable electrode. The functional scheme of the operating ESP furnace is designed. The results of commissioning are described, confirming the successful modernization and operability of the ESP furnace. The prospects of using the ESP A-550 furnace as an object of validation of numerical models of technological processes for melting metals and alloys are outlined.
Keywords:Furnace, electroslag remelting, direct current, rotation of the consumable electrode, high-quality metals and alloys.

Gushchin N.S. Hardenability of wear-resistant white irons. Part 1

Malinov L.S. Increased abrasive wear resistance of cast iron by obtain multiphase structure with metastable austenite

Verin A.S. The resistance to hot corrosion of not alloyed Ni3Al

Marukovich E.I., Stetsenko V.Y., Stetsenko A.V. Mechanisms for modification of cast magnesium alloys

Semyonov K.G., Batyshev K.A., Svinoroev Yu.A. Investigation of an effect of alloying elements on the processing characteristics of low-alloyed copper

Kokovin P.L., Maltseva T.V., Ovsyannikov B.V. Mastering the technology of casting large-sized slabs ingots from aluminum-lithium alloy

Prusov E.S. Resource saving in the manufacturing and exploitation of products from cast composite materials

Alekseev I.A., Sergeev D.V., Chumanov I.V. To the possibility of converting the A-550 electroslag furnace to direct current