[1D05-08] Corrosion

[1D05] SCC growth behavior of SUS630 in high temperature water

(1)Effect of precipitation hardening heat treatment, thermal aging and test temperature

*Takuyo Yamada¹, Takumi Terachi¹, Makie Okamoto¹, Koji Arioka¹ (1. Institute of nuclear safety system, inc.)

Keywords:SUS630, 17-4 PH stainless steel, SCC growth behavior in high temperature water, Thermal aging, Precipitation hardening heat treatment

SCC growth behavior of SUS630 (17-4 PH stainless steel) in high temperature (250℃-320℃) water was investigated. SCC growth rate was increased with test temperature increasing. SUS630 was hardend with precipitaion hardening heat treatment and thermal aging. SCC growth rate was increased with with hardness increasing.