Author/Authors :
Stolyarov، نويسنده , , V.V. and Latysh، نويسنده , , V.V. and Shundalov، نويسنده , , V.A. and Salimonenko، نويسنده , , D.A. and Islamgaliev، نويسنده , , R.K. and Valiev، نويسنده , , R.Z.، نويسنده ,
Abstract :
The influence of severe plastic deformation (SPD) on aging effects in commercial strongly alloyed Al-Zn-Mg-Cu-Zr alloy was studied. The effect of natural and artificial aging was studied after application of three different processing schemes: (1) usual quenching; (2) SPD in the starting state; (3) SPD at once after quenching. It was shown that SPD process leads to formation of nanocrystalline structure (dz = 70 nm) providing a high strength state. The attained value of microhardness equal to 2800 MPa is a record and exceeds a correspondent value obtained by traditional methods by a factor of 1.5–2.0.
