Ультразвуковое исследование образцов из титанового сплава Ti-6Al-4V, полученных методами аддитивного производства

Abstract

The main advantage of additive technologies is the layer-by-layer growth of products, allowing, in particular, to obtain parts with such geometric shape, which in many cases cannot be obtained by classical production methods (rolling, stamping, cutting, etc.). Microstructure formation in metal products of additive manufacturing is almost entirely determined by the configuration of printing settings: the speed of scanning of the energy beam over the surface layer of powder electron beam melting, the size of powder's particles, and the density of the energy flux supplied to the powder. Physical and technical features of ultrasonic control suggest the possibility of its implementation in additive manufacturing, since elastic waves of high frequencies propagating in the object of control, emitted and received by moving sensors, allow characterize defects and elastic properties in the volume of the printed product. In this paper, the attenuation gradient of ultrasonic wave along the construction direction of the product is measured and observed