LOW-TEMPERATURE PLASTIC-DEFORMATION OF AL -LI SOLID-SOLUTION

Plastic deformation of Al-Li solid solutions with equilibrium and none quilibrium Li concentrations has been investigated in detail in the te mperature range 293-4.2 K. The effect of temperature on the stress-str ain curve parameters has been studied. The data on the temperature dep endence of the yield stress and the strain rate sensitivity of the flo w stress at T < 140 K have been analysed in terms of the concept of th ermally activated nature of plastic deformation of alloys.