Structure and properties of 1421 aluminium alloy subjected to plastic deformation and heat treatment

For the aluminium alloy 1421 plastic characteristics are studied and resistance to deformation is determined. Strengthening curves for the alloy are obtained both in as-cast state and for rolled billets. Effect of thermomechanical treatment schedules on the structure and properties of 1421 alloy. It is shown that the greatest effect of increasing strength characteristics of the alloy is provided by low-temperature thermomechanical treatment with deformation in the temperature range of optimal aging. These results may be used for calculation of hot deformation regimes of the alloy and for choosing thermomechanical treatment schedule resulting in optimal strengthening effects.