Afanasyeva S.A.   Burkin V.V.   Dudarev e.D.   Ishchenko A.N.   Sammel A.Y.   Tabacina A.N.   Khabibullin M.V.  

Mathematical modeling of shock-wave phenomena in titanium alloys under high-energy impulse action

Reporter: Afanasyeva S.A.

The main advantages of titanium alloys over other structural materials are their low density with high specific strength and heat resistance combined with high corrosion resistance. Titanium is successfully used as an armored metal. In this regard, mathematical modeling of the behavior of titanium alloys under shock wave impact is important. A variety of physical and mechanical properties of titanium alloys, including those with different microstructure (nano-and submicrocrystalline) requires the verification of mathematical models under different loading conditions.
This paper presents a numerical and experimental modeling of the effects on the titanium plate of high-speed impact and irradiation by high-current electron beams. Also examines the structural transformation α ↔ ω and spalling in titanium under shock compression.
Samples of the plates made of titanium with ultrafine-grained structure obtained by the method of ABC – pressing. Ballistic tests under high-velocity impact was performed using smooth-bore ballistic launchers with a caliber of 30 mm. For irradiation of samples was used nanosecond electron accelerator "Sinus - 7". Calculations of the hypervelocity impact events held in the framework of the elastoplastic model taking into account the destruction and the various phase States of the interacting materials.

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