MECHANICAL AND STRUCTURAL PROPERTIES OF STAINLESSSTEEL SPECIMENS WITH INTERNAL CHANNELS FABRICATED BY SELECTIVE LASERS INTERING
The paper investigates the mechanical and structural characteristics of stainless steel specimens with different cross-sectional shapes. Samples were obtained on the EOSINT installation based on layered laser synthesis technology. From tensile tests, the mechanical properties of samples with a relief surface and samples with internal channels of small diameter were determined. To determine the internal structure of the samples, their study was carried out using the method of computed tomography. It is established that the presence of internal thin channels oriented in the loading direction leads to a decrease in the Young's modulus, the yield strength and the ultimate strength of the samples by 20-50%.
LEV N. RABINSKIY, YURY O. SOLYAEV, EKATERINA L. KUZNETSOVA AND ELENA L. KUZNETSOVA