TY JOUR TI Plasma welding of high-strength aluminum alloys KW plasma arc KW aluminum alloys KW welding with non-consumable electrode KW welding with penetrating arc KW pulse feed of plasma-forming gases KW mechanical properties KW seam structure JO Science intensive technologies in mechanical engineering AU Ovchinnikov, V.V. AU Rastopchin, R.N. PY 2020 IS 2020 PB Bryansk State Technical University