Formation of a microcomposite structure in the surface layer of yttrium-doped titanium

Surface layers containing oxides and carbides of titanium and yttrium are prepared by the electroexplosive doping of titanium with yttrium. The subsequent electron-beam irradiation leads to dispersion of the structure to a nano- and submicron state. The formation of two types of eutectics is revealed using scanning electron microscopy. The eutectics enriched in titanium and yttrium have a globular and plate-like shape, respectively. The formation of a modified surface layer (enriched in yttrium, carbides and oxides of titanium and yttrium) leads to a threefold increase in the microhardness of the titanium, a more than twofold decrease in the friction coefficient of the doped layer, and a more than 2.8-fold decrease in the wear rate

Surface hardening alloy VT6 of electric explosion and by electron beam

The aim is to study the phase composition, structure and properties of the surface layer of the VT6 titanium alloy, subjected to combined treatment, consisting of alloying by the plasma of an electric explosion of a graphite fiber with a charge of the SiC powder and subsequent exposure by a high-intense electron beam. As a result of such treatment, a multiphase surface layer with a submicron and nanosize structure forms with the microhardness manifold exceeding its value in the sample volume are presented

МОДИФИКАЦИЯ ПОВЕРХНОСТИ СПЛАВА ВТ6 ПЛАЗМОЙ ЭЛЕКТРИЧЕСКОГО ВЗРЫВА ПРОВОДЯЩЕГО МАТЕРИАЛА И ОБЛУЧЕНИЕМ ЭЛЕКТРОННЫМ ПУЧКОМ

The results of investigations of phase composition, structure, and properties of VT6 titanium alloy surface layer subjected to combined processing, which consists of alloying by plasma of electric explosion of carbon-graphite fiber with SiC powder specimen and subsequent high-intensity electron-beam irradiation, are given. As a result of such a treatment, a multiphase surface layer with submicro- and nanosized structure the microhardness of which many times exceeds the value in the sample bulk.Приведены результаты исследования фазового состава, структуры и свойств поверхностного слоя титанового сплава ВТ6, подвергнутого комбинированной обработке, заключающейся в легировании плазмой электрического взрыва углеграфитового волокна с навеской порошка SiC и последующем облучении высокоинтенсивным электронным пучком. В результате такой обработки формируется многофазный поверхностный слой с субмикро- и наноразмерной структурой, микротвердость которого многократно превышают ее величину в объеме образца

Formation of a microcomposite structure in the surface layer of yttrium-doped titanium

Surface layers containing oxides and carbides of titanium and yttrium are prepared by the electroexplosive doping of titanium with yttrium. The subsequent electron-beam irradiation leads to dispersion of the structure to a nano- and submicron state. The formation of two types of eutectics is revealed using scanning electron microscopy. The eutectics enriched in titanium and yttrium have a globular and plate-like shape, respectively. The formation of a modified surface layer (enriched in yttrium, carbides and oxides of titanium and yttrium) leads to a threefold increase in the microhardness of the titanium, a more than twofold decrease in the friction coefficient of the doped layer, and a more than 2.8-fold decrease in the wear rate