Effect of eutectic particles on the grain size control and the superplasticity of aluminium alloys

► The particles which control grain growth and stimulate grain nucleation are studied. ► The Zener-Smith law is confirmed and experimental coefficients are found. ► The Al alloys with recrystallized grain size 3-4 μm were obtained. ► The elongation over 400% was achieved at strain rate 0.005 1/c.