The Paton Welding Journal, 2002, №05

2002 №05 (09)

2002 №05 (11)

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The Paton Welding Journal, 2002, #5, 36-38 pages

On the causes for formation of defects in welds of E110 alloy made by electron beam welding and methods of controlling them

V.I. Vasilkov¹, A.A. Kislitsky¹, N.V. Onuchin¹, V.V. Rozhkov¹, A.V. Strukov¹, V.B. Chizhov², P.I. Lavrenyuk³

¹Company «Novosibirsk Chemical Concentrate Works», Novosibirsk, Russia
²GNTS VNIINM, MOSCOW, Russia
³Company «TVEL», Moscow, Russia

Abstract
The paper deals with the possible causes for initiation of outer and inner defects in EBW of fuel elements to fuel cladding of E110 alloy. It is shown that the sources of pores in welds are gaseous products of sublimation of organic and inorganic materials in microvolumes between the surfaces being welded. Recommendations are given on prevention of pores and undercuts in welds.
Keywords: ectron beam welding, fuel element, micro¬contamination, pore, undercut, butt, beam control

References

1. Lebedev, N.V., Kosykh, M.A., Shchavelev, L.N. (1977) On causes of pore formation in electron beam welding of zirconium alloy with 2.5 % niobium. Svarochn. Proizvodstvo, 3.
2. Ivannikova, A.D., Erokhin, A.L. (1968) Influence of surface contamination of titanium on pore formation in welding. Ibid., 2.
3. Nikiforov, G.D., Redchits, V.V. (1971) On the mechanism ol pore lormation in welding ol titanium alloys. Ibid., 3.
4. Nikiforov, G.D., Makhortova, A.G. (1961) Sources of hydrogen dissolving in weld metal during welding. Ibid., 4.

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Suggested Citation

V.I. Vasilkov, A.A. Kislitsky, N.V. Onuchin, V.V. Rozhkov, A.V. Strukov, V.B. Chizhov, P.I. Lavrenyuk (2002) On the causes for formation of defects in welds of E110 alloy made by electron beam welding and methods of controlling them. The Paton Welding J., 05, 36-38.

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