TY JOUR TI A normalized method for determining the influence on the fixed joints tightness using the technology of the sealing surface job KW friction stir welding KW aluminum alloys KW seam weld face KW roughness KW temporary resistance KW microstructure of the junction KW endurance limit of the welded seam JO Science intensive technologies in mechanical engineering AU Ovchinnikov, V.V. AU Berezina, V.A. AU Skakova, T.Y. PY 2021 IS 2021 PB Bryansk State Technical University