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Information × Registration Number 0222U001769, 0120U100135 , R & D reports Title Scientific and technological principles for obtaining of cast aluminum-based composited and structural materials, strengthened by high-enthalpy gas and dispersed reagents injected into the melt in liquid and vapor state popup.stage_title Head Narivsky Anatoliy V., Доктор технічних наук Registration Date 02-02-2022 Organization Physico-technological institute of metals and alloys National academy of Sciences of Ukraine popup.description2 There were developed principles and on their basis there were created necessary technological preconditions for production of cast structural and composite materials on aluminum base strengthened by high-enthalpy gaseous and dispersed reagents which are entered in liquid and vaporous states. After MHD-plasma processing of aluminium alloy B93пч by nitrogen plasma, mechanical properties of cast metal increased (strength on 16%, ductility on 14%, elongation in 1.5-1.7 times) in comparison with untreated alloy. There were developed technologies for preparation in vacuum MHD installation and continuous casting of ingots with diameter of 250 mm from aluminium alloy B93пч alloyed with titanium and processed by nitrogen plasma. Such ingots have dispersed structure with average grain size of ~40 μm, which is on 25-30% less than in ingots from unprocessed aluminium alloy B93пч. Input of infusible powder modifier (wolfram carbide) into hypoeutectic silumin AK7 and hypereutectic silumin A390 at MHD-plasma action allowed additionally dispersing of structure of cast alloys and provided growth of tribological characteristics. Application of modified alloys made possible to increase working resource of bearings in 1.5-2 times in comparison with bearings from bronze. MHD-plasma processing of liquid aluminum alloy A390 allows to disperse cast structure (especially primary silicon crystals), and to change ratio of structural constituents and redistribute components of alloy between them. As result, in comparison with initial alloy, it is provided increasing: strength (on 7-8%), ductility (almost in 2 times), wear resistance (more than 20%). In machine-building castings (frame parts, engine pistons) made from aluminium alloys AK7 and A390, obtained by new technology, in comparison with existing processes, there were provided dispersing of structure, reducing of porosity, growing both tightness and density of alloy, increasing both strength (on 15%) and wear resistance (on 25%) Product Description popup.authors Goryuk Maksym S. Zatulovskyi Andrii S. Narivsʹkyy Anatoliy Vasylʹovych Polivoda Svitlana Leonidivna Skorobagatko Iuliia Petrivna Smirnov Oleksiy M. Shcheretskyi Volodymyr O popup.nrat_date 2022-03-09 Close