The Paton Welding Journal, 2000, №09

2000 №09 (07)

2000 №09 (09)

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The Paton Welding Journal, 2000, #9, 45-53 pages

Corrosion-mechanical strength of welded piping of austenitic steels of RBMK reactors

A.S. Zubchenko, I.L. Kharina, A.E Runov, V.O. Makhanev

SRC TsNirrMASh, Moscow, Russia

Abstract
Corrosion-mechanical strength of welded piping of nuclear reactors equipment of 08Kh18N10T austenitic steel is considered. Numerous circular and axial crack-like defects were detected, which initiate and propagate by the mechanism of intercrystalline stress corrosion cracking. It is found that the main factors which determine the incubation period and intensity of welded joint damage are the level and nature of distribution of residual welding and service stresses, presence of the zones of plastically deformed metal and composition of the medium which is in contact with the inner surface of the piping.
Keywords: piping, welded joint, crack, strength, stresses, corrosion

References

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Suggested Citation

A.S. Zubchenko, I.L. Kharina, A.E Runov, V.O. Makhanev (2000) Corrosion-mechanical strength of welded piping of austenitic steels of RBMK reactors. The Paton Welding J., 09, 45-53.

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