Promakhov Vladimir, Matveev Alexey, Schulz Nikita, Dronov Philip, Zhukov Alexander, Vorozhtsov Alexander
Center for Additive Technologies, National Research Tomsk State University, 634050 Tomsk, Russia.
Materials (Basel). 2022 Aug 2;15(15):5327. doi: 10.3390/ma15155327.
This article considers issues pertinent to the research of the phase composition, structure and mechanical properties of materials obtained from powders of composite (Ni-Ti)-TiB2, which have prospective applications in aerospace and automotive industry and engine construction. The starting powder materials (Ni-Ti)-TiB2 were obtained by self-propagating high-temperature synthesis (SHS). Research samples were produced using high-temperature vacuum sintering. It was shown that the use of such materials increases the wettability of the particles and allows the production of composites, the density of which is 95% of the theoretical one. Average particle size was 1.54 µm, average microhardness was 8 GPa, which is an order of magnitude higher than the average microhardness of pure nickel-based and titanium-based alloys, and the ultimate strength values were comparable to those of tungsten-based heavy alloys.
