10:50 AM - 11:05 AM
[2I04] Fundamental technology development for evaluation of thermally ageing embrittlement of stainless steel welds used as pressure boundaries in nuclear power plants
(1)Summary
Keywords:Austenitic stainless steels, Weld metal, Thermal embrittlement
Changes in microstructure of ferrite phase in austenitic stainless steel welds due to thermal aging was investigated. Prediction methods for spinodal decomposition and G-phase precipitation will be proposed. Effect of neutron irradition on microstructural changes was also discussed.