Effect of Thermal Aging on Stress Corrosion Cracking in High Temperature Water for Cast Duplex Stainless Steel Used in Primary Coolant Pipe
The Z3CN20.09M cast duplex stainless steel (CDSS) for primary circuit main pipelines in second generation nuclear plants was subjected to accelerated thermal aging at 450°C for 5000 h (~64.7 equivalent service years at 290°C cold‑leg temperature), and its stress corrosion cracking (SCC) behavior was investigated. Slo...