Dynamic deformation of aluminum alloys at high temperature by using SHPB techniques

초록

This paper has been studied the dynamic deformation behaviour of aluminium alloys such as 2024-T3 and 6061-T6 by using a modified high-temperature split Hopkinson pressure bar (SHPB) technique with a pulse shaper at elevated and room temperature range. An experimental strategy has been proposed and evaluated with the modified high-temperature SHPB apparatus. The experiments were carried out on two types of aluminium alloys with various strain rates and at a temperature range from 25℃ to 500℃. The reflected wave with pulse shaper, the true stress - true strain relationship, strain rate, front-end and back-end stress with time scale are described at room and high temperature.