Authors:
Anatolii Laptiev (Frantsevich Institute for Problems of Materials Science National Academy of Science of Ukraine, Ukraine)
Dmytro Verbylo (Frantsevich Institute for Problems of Materials Science National Academy of Science of Ukraine, Ukraine)
Victor Novichenko (Technical Center NAS of Ukraine, Ukraine)
Oleksandr Myslyvchenko (Frantsevich Institute for Problems of Materials Science National Academy of Science of Ukraine, Ukraine)
Anatolii Laptiev (Frantsevich Institute for Problems of Materials Science National Academy of Science of Ukraine, Ukraine)
Abstract:
Titanium is one of the most important materials for aviation and space industry. High-strength parts can be obtained by powder metallurgy methods from fine-grained powder. However, pressureless sintering of titanium powders requires high temperature (1200-1300 °C) and long holding (2-4 hours). To obtain high-density samples at lower temperatures, of interest is the method of a vacuum compaction of a porous briquette under the action of an impact load, at which the pressure reaches values of 1100-1300 MPa, and the compaction process lasts 0.003-0.005 s. In this study, titanium samples were obtained using two technologies: pressureless sintering of porous briquettes at a temperature of 1300 °C with an isothermal holding time of 80 min, and impact compaction at temperatures of 750, 850 and 950 °C with an isothermal holding time of 30 min before impact. The density, mechanical properties and microstructure of samples after their compaction by different methods were studied.
DOI:
https://doi.org/10.59499/EP256717003
