Contemporary automotive and aerospace industry have high requirements for the reliability due to growth of the vehicle velocities. At the same time, performance of materials used for the vehicle production often operate under non-standard conditions. The paper presents a comprehensive approach to study and prediction of the behavior of materials subjected to dynamic tensile loads. Aluminum alloys Al-Mg и Al-Cu-Mg are studied in order to demonstrate possibility of the strength properties enchantment using severe plastic deformation technique. Behavior of the materials us investigated for a wide range of loading conditions.

Aluminum alloys of the Al-Mg system are widely used in automotive and aviation industries due to their combination of strength, good ductility and corrosion resistance. Increasing the percentage of magnesium leads to higher strength of the material with a slight reduction of ductility. Behavior of critical stresses in materials were studied under variable strain rate loading conditions. The possibility to predict critical dynamic stresses of materials based on a structural-time approach is discussed.

Increasing the static strength of materials used in extreme operating conditions does not allow us to estimate reliability of the final products. In the article, aluminum and titanium alloys are used to show features of material deformation, which are detected when strain rate increases. Possibility of selecting a suitable material for the specified operating conditions in the framework of a structural-time approach is discussed.