Abstract
Flat compression tests of Al–Cu–Li alloys are made. Samples deformed in isothermal conditions at deformation value ε = 55%, in strain rate intervals 10–3–10–1 s–1 and temperatures 400–480°C. The empirical equations connecting thermomechanical parameters of Al–Cu–Li alloys deformation are received. The hightemperature deformation mechanism diagrams (DMD) Al–Cu–Li alloys are plotted. Temperature and strain rate mechanisms action areas of hot deformation and warm deformation are specified. It is shown that the warm deformation area on DMD is equal to the dynamic poligonization area on structural conditions diagram, and the hot deformation area is equal to the partial recrystallization area.
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