Yu. A. Shlyarova, V. V. Shlyarov, I. A. Panchenko, Yu. F. Ivanov, D. V. Zagulyaev, A. N. Prudnikov
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引用次数: 0
Abstract—Al–Si alloys are indispensable in various industries, such as aerospace and automotive ones, due to their high strength-to-weight ratio, high thermal conductivity, and corrosion resistance. These alloys often contain elements such as Si, Cu, Mg, and Zr, which improve their properties, and special compositions make it possible to increase strength and wear resistance and to improve a granular structure. The paper describes a combined modification of the surface layer of a hypereutectic Al–15% Si alloy, which consists in electroexplosive alloying by the Al–Y2O3 system followed by irradiation with a pulsed electron beam. Combined treatment is found to cause a multiple (by ~7.6 times) increase in the wear resistance of the modified silumin layer. The modified 35-μm-thick sample volume has a multilayer multielement multiphase structure and is reinforced with oxide nanoparticles. Pulsed electron beam irradiation of the surface of the silumin subjected to electroexplosive alloying is found not to bring about dissolution of an yttrium oxide powder: regions enriched in yttrium atoms are present at the sample surface. The revealed multiple increase in the wear resistance of the silumin subjected to combined treatment is thought to be caused by the formation of oxide nanoparticles in the surface layer.
期刊介绍：
Russian Metallurgy (Metally) publishes results of original experimental and theoretical research in the form of reviews and regular articles devoted to topical problems of metallurgy, physical metallurgy, and treatment of ferrous, nonferrous, rare, and other metals and alloys, intermetallic compounds, and metallic composite materials. The journal focuses on physicochemical properties of metallurgical materials (ores, slags, matters, and melts of metals and alloys); physicochemical processes (thermodynamics and kinetics of pyrometallurgical, hydrometallurgical, electrochemical, and other processes); theoretical metallurgy; metal forming; thermoplastic and thermochemical treatment; computation and experimental determination of phase diagrams and thermokinetic diagrams; mechanisms and kinetics of phase transitions in metallic materials; relations between the chemical composition, phase and structural states of materials and their physicochemical and service properties; interaction between metallic materials and external media; and effects of radiation on these materials.
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