---

概要

Authors previously reported leakage magnetic flux density measured by flux gate (FG) sensor seems to depend on irradiation assisted stress corrosion cracking (IASCC) susceptibility of neutron irradiated austenitic stainless steels. This study aimed to evaluate possibility to develop diagnostic method to detect symptom of IASCC by more practical methods such as Eddy current method and AC magnetization method. Magnetic properties of neutron irradiated specimens and mockup specimens were studied and dependence on IASCC susceptibility was revealed. Microstructure observation using transmission electron microscope (TEM) was conducted to study magnetic phase formation by radiation induced segregation (RIS). It was shown that measurement of magnetic signal changed by magnetic phase formation along grain boundaries caused by RIS would be a mechanism of the diagnostic method to detect symptom of IASCC.

---

全文掲載のPDFファイルダウンロード

• PDFファイルダウンロード