TY JOUR TI Engineering procedure in electron-beam welding of blade packet for steam turbines KW electron beam welding KW packets of steam turbine blades KW concentrated energy flows KW hard-to-weld steels of martensitic class. JO Science intensive technologies in mechanical engineering AU Kheifets, M.L. AU Borodavko, V.I. AU Pynkin, A.M. AU Gretsky, N.L. PY 2018 IS 2018 PB Bryansk State Technical University