Вплив титаноалюмохромування на склад, структуру, властивості сплаву ХН55ВМТКЮ

В.Г. Хижняк; Т.В. Лоскутова; О.Е. Дацюк; Є.О. Чуб

doi:10.15407/mom2018.02.029

Authors

V.G. Khizhnyak National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv
Т.V. Loskutova National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv
O.E. Datsyuk National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv
Y.O. Chub National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv

DOI:

https://doi.org/10.15407/mom2018.02.029

Abstract

The complex saturation of the heat-resistant alloy HN55VMTKY was carried out in a powder mixture of metals Ti (15% by weight); Al (15% by weight); Cr (25% by weight); Al₂O₃ (40% by weight); NH₄Cl (5% by weight) in flashing containers at a temperature of 1050°C for 4 hours. The samples with coatings were investigated by methods of modern physical material science. Under the accepted conditions of titanium-alumochromination, a multilayer coating of Al₂O₃, TiNiAl (g-phase) AlNi₂Ti (Hustler phase) is formed on the surface of the alloy ХН55ВМТКЮ. The concentration of Ti, Al, Cr on the outside of the coating is 50.0, respectively; 17.5; 27.5% by weight. As a result of titanium aluminum chromium alloys ХН55ВМТКЮ at a temperature of 1000 °С increase in 10,6 times in comparison with the initial. The maximum microhardness was found for the columnar crystal zone – 9.8-10.8 GPa.

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