METHOD FOR ELECTRONIC BEAM WELDING OF HIGH-STRENGTH TITANIUM ALLOYS FOR MANUFACTURING LARGE-SIZED STRUCTURES

摘要

FIELD: shipbuilding; aviation; space technology; power plants. ;SUBSTANCE: invention relates to a method for electron beam welding of high-strength pseudo-β-titanium alloys and can be used for the manufacture of large-sized structures for shipbuilding, aviation and space technology, as well as power plants. The method includes: surfacing on the edges of the welded joint of metal with a lower content of β-stabilizing elements than in the base metal, and heat treatment of the welded workpieces prior to the welding process. Preliminary surfacing and heat treatment of welded workpieces before the welding process contribute to the alignment of the structure, namely, in the heat-affected zone, a more intense and uniform decomposition of the β-phase occurs, as a result of which the strength and plastic characteristics of welded joints increase. ;EFFECT: invention makes it possible to manufacture large-sized structures. ;1 cl, 1 dwg, 2 tbl, 1 ex