ČÍŽEK Petr MATERIÁLOVÝ A METALURGICKÝ VÝZKUM s.r.o.

Spoluautoři KANDER Ladislav, MATOCHA Karel

Heterogeneous weld joint 08Ch18N10T – 22K belongs to very important products in nuclear power engineering. It is used on weld joint No. 23 of steam generator at WWER 440. Paper deals with comparison of two different welding technologies. Purpose of research was to compare these two different methods of its production from the point of view of chemical composition, macro and microstructure analyses and evaluation of fatigue and fracture behaviour. This article summarizes results of fatigue and fracture behaviour testing, namely low – cycle fatigue tests of 22K - I.weld deposit interface and base mateials 22K at 290°C, fracture toughness measurements at 290°C and last part of the article is related to evaluation of stress corrosion cracking resistivity using autoclave experiments in water solution at high temperature and pressure.

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