I. G. Shirinkina, I. G. Brodova, V. V. Astafiev

THERMAL STABILITY OF THE ULTRAFINE AMTs ALUMINUM ALLOY AFTER HIGH STRAIN-RATE DEFORMATION

The thermal stability of the AMts alloy obtained by dynamic channel-angular pressing (DCAP) is considered at temperatures ranging between 200 and 400 ºC. The thermal stability of the structure and properties of the AMts alloy is studied by transmission and scanning electron microscopy, X-ray analysis and microhardness measurements. It is shown that the most stable structural state is obtained after one cycle of dynamic pressing. The temperature-time parameters of complex processing have been established, including dynamic pressing and annealing, which preserve the submicrocrystalline state and high properties (hardness) of the AMts alloy.

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