Download INVESTIGATION OF MECHANICAL PROPERTIES OF

23. - 25. 5. 2012, Brno, Czech Republic, EU
INVESTIGATION OF MECHANICAL PROPERTIES OF METAL-CERAMIC GRADIENT
MATERIAL AT HIGH TEMPERATURES
CHUMANOV Ilya
South Urals State University, Chelyabinsk, Russian Federation
Abstract:
The development of such industries nuclear, aerospace, heavy machinery placing materials increasingly
high demands on their performance characteristics. That is why today more and more researchers are
interested in various methods of hardening of metallic materials, in order to prolong their useful life. Modern
science knows many methods to increase the service life of metallic materials and one of them is the
application of ceramic coatings and the introduction of ceramic particles in a metallic material. These
materials combine the properties and the metal and ceramic, capable of operating at high temperatures
under high load. The study of such materials is a unique case, since the study mechanical properties at
temperatures as high melting point metal is rather difficult. Fortunately, there's an opportunity to conduct
such a study prospective metal-ceramic material on a unique test complex for physical modeling called
Gleeble. This allows for complex thermo-mechanical testing of material at almost any temperature at defined
rates of heating and cooling. To study the mechanical properties at different temperatures was taken as a
promising metal-ceramic gradient material, reinforced with tungsten carbide produced by centrifugal casting.
Of workpieces with different content introduced tungsten carbide samples were cut to study parameters such
as the "strength" and "yield strength". The manuscript presents the results of the study of metal ceramic
material. Based on these results the graphs showing the dependence of the properties of the material
obtained from the content of tungsten carbide.
Keywords: gradient metal-ceramic material, high temperature mechanical properties
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