Experimental Studies of the Thermal Shock Wave Produced in the Flat Plate Targets Bombarded by Electron Beam on 'Flash-Ⅱ'

The thermal shock wave is an important mechanic phenomenon of the material response produced in the target material bombarded by electron beam. In this paper, the experimental studies of the thermal shock wave produced in the flat plate targets bombarded by electron beam on FLASH Ⅱ equipment during the recent years are discussed. The target material is LY-12 aluminum alloy with thicknesses of 2.8～6.5 mm. The range of energy fluxes on targets is 87～152 J/cm2. Experimentally measured stress peaks of the thermal shock waves is 0.35～2.0 GPa, average acting time of the thermal shock waves about 0.29 s, average semi-high width about 0.14 s, and average rise time about 0.10 s.