Abstract
The methods of combined electron-beam treatment of parts made of steel with one- and two-layer coatings are studied experimentally. Ti-Ni, Ni-Al and Al-Ti systems were used as the examples in the experiments. The mathematical model is suggested for coating formation in the controlled regime of high temperature synthesis during high energy source motion along the preliminarily deposited layer of exothermic composition. The study takes into account the difference in thermophysical properties of the materials of coating and substrate, heat release from chemical reaction that leads to the coating properties formation and other factors. The realization of the synthesis depends on technological parameters. Various regimes of the treatment process are investigated numerically.
Highlights
Self-propagating high-temperature synthesis (SHS) methods possess the extensive possibilities to create the materials of various types [1,2,3]
Employment of electron-beam has advantages for a broad spectrum of technology applications [46], including surface engineering: thermal treatment of alloys based on iron, titanium, aluminum and copper in the hardening regime from solid and liquid states, build-up welding of coatings on these alloys from materials with considerably different properties
This paper briefly describes the experimental procedure for coating synthesis from Al-Ni, shows the results of investigation of phase composition determination after electronbeam treatment and suggests the model of phase composition evolution for the coating synthesized on the substrate
Summary
IOP Conf. Series: Materials Science and Engineering 140 (2016) 012018 doi:10.1088/1757-899X/140/1/012018 A I Gordienko2, A G Knyazeva1,31, I L Pobol2 1 Tomsk Polytechnic University, Tomsk, Russia 2 Physical-Technical Institute of the National Academy of Sciences of Belarus, Minsk, Republic of Belarus 3 Institute of Strength Physics and Material Science of the Siberian Branch of the Russian Academy of Science, Tomsk, Russia
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