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Electron beam deposition is a process that involves the use of an electron beam as a source of energy and wire as a raw material for the fabrication of metal products with complex shape in a vacuum...

The article discusses the features of producing articles by the method of electron beam additive forming of alloys based on aluminium. The technology of obtaining a thin wall from a deformable alum...

Investigations were carried out into the production of combined welded joints in 316L(N) austenitic steel and BrKh1Tsr (CuCrZr) and CuAl10Ni5Fe4 bronzes 30 mm thick by electron beam welding (EBW). ...

An improved method for calculating the minimum permissible electron beam welding (EBW) speed with continuous penetration is described. Calculations are carried out to construct nomograms for determ...

Experiments were carried out to investigate the effect of electron beam welding speed in the range 20–120 m/h on the properties of welded joints in 20-mm-thick plates of D16 alloy. The distribution of magnesium in the cross section of welded joints in dependence on the welding speed was determined. The structure of the welded joints was investigated by optical and electron microscopy. The hardness in different zones of the welded joints after welding and different types of heat treatment was measured. The relationship between the chemical composition, structure and mechanical properties of the welded joints produced at different welding speeds was determined.

Investigations were carried out into the conditions of free formation of welded joints in electron beam welding in the flat position with continuous penetration, and also into the dynamic model of the discharge of liquid metal of the weld pool from the root in which the metal moves downwards at a higher speed in the initial stage; but during movement of the heat source the magnitude of acceleration decreases as a result of the reduction in the width of the welded joint due to solidification and increase in surface tension forces. A procedure for determining the minimum permissible welding speed at which the welded joints can form without undercutting in the tip is described.

Investigations were carried out into the special features of the process of electron beam welding (EBW) with the supply of nitrogen into the weld pool. The effect of the gas medium on the focusing of the electron beam and the depth of penetration is described. The dependence of the chemical composition of weld metal and of the mechanical properties of the welded joint on the amount of supplied nitrogen is determined. It is assumed that it is sufficient to alloy the welded joints in austenitic creep-resisting steels with nitrogen during EBW in order to increase the hot cracking resistance of the weld metal.

Investigations were carried out on the special features of the structure and properties of electron beam welding joints in 150 mm thick plates of pearlitic steel 16GNMA and 160 mm plates of 12Kh2MFA steel. It is shown that using vacuum as the shielding medium results in the efficient removal of gases from the weld pool and reduces the content of alloying elements with high vapour tension.

(2005). Formation of diffusion interlayers in electron beam welded joints in diaphragms of steam turbines. Welding International: Vol. 19, No. 9, pp. 717-723.