Effect of preheating on the morphology of an aluminum alloy surface under irradiation with a high-power ion beam

Abstract

The effect of a high-power ion beam with nanosecond duration and a current density of 150 A/cm2 on the surface of a preliminarily heated D16T aluminum alloy is studied using scanning electron microscopy and X-ray microanalysis. It is shown that, at a temperature of 300°С, the average size of the craters decreases by a factor of 3.6 and the surface density of the craters decreases fourfold. A possible mechanism for the effect of alloy preheating on the formation of the surface morphology under such the action is discussed.