The Paton Welding Journal, 2004, №06

2004 №06 (03)

2004 №06 (05)

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The Paton Welding Journal, 2004, #6, 18-21 pages

Mechanical properties and fracture toughness of welded joints of a WWER-1000 reactor

A.S. Zubchenko, G.S. Vasilchenko, E.G. Starchenko, S.I. Nosov

FGUP «TsNIITMASh», Moscow, Russia

Abstract
Effect of nickel content in weld metal of steel 15Kh2NMFAA welded joints on their brittle fracture susceptibility has been studied, in particular after radiation exposure. It is shown that mechanical properties of weld metal with nickel content of not more than 1.3 % are not lower that those given in the specification. It is recommended that the design of reactors for brittle fracture resistance should be performed on the basis of fracture toughness of welded joints, using a standard curve.
Keywords: arc welding, low-alloyed steel, reactor body, welded joints, mechanical properties, brittleness, fracture toughness

References

1. PNAE G-7-002-86. Codes for strength design of equipment and pipelines of nuclear energy plants. Moscow: Energoatomizdat.
2. ASTM E 1921-97. Standard method for determination of reference temperature for ferritic steels in transition range.
3. GOST 25.506-85. Methods of mechanical testing of materials. Determination of characteristics of crack resistance (fracture toughness) during static loading. Moscow: Gos- standart SSSR.
4. Margolin, B.Z., Shvetsova, V.A., Nikolaev, V.A. et al. (2001) Procedure for prediction of temperature dependence of material fracture toughness in WWER-440 and WWER- 1000 reactor bodies.

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Suggested Citation

A.S. Zubchenko, G.S. Vasilchenko, E.G. Starchenko, S.I. Nosov (2004) Mechanical properties and fracture toughness of welded joints of a WWER-1000 reactor. The Paton Welding J., 06, 18-21.

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