11:05 AM - 11:20 AM
[2I05] Fundamental technology development for evaluation of thermally ageing embrittlement of stainless steel welds used as pressure boundaries in nuclear power plants
(2)Thermal aging behavior of stainless steel welds
Keywords:weld metal, thermal embrittlement, austenitic stainless steels
Hardening behavior of ferrite phase in thermally aged austenitic stainless steel welds was investigated. Nanometer-scaled characterization of microstructure was also carried out to evaluate spinodal decomposition. It has been suggested that solidification mode affected age-hardening behavior of ferrite phase.