TY JOUR TI Specificities of welds formation with aluminum alloy AK 9 obtained by selective laser melting KW selective laser melting KW aluminum alloy KW fusion welding KW friction stir welding KW porosity KW mechanical properties JO Science intensive technologies in mechanical engineering AU Ovchinnikov, V.V. AU Reztsov, R.B. PY 2023 IS 2023 PB Bryansk State Technical University