AE monitoring for external stress corrosion cracking of Stainless Steel

Abstract

Acoustic emission (AE) monitoring during stress corrosion cracking (SCC) of AISI 304 steel in chloride solution revealed that the transgranular type SCC (TG-SCC) does not produce AEs while intergranular type SCC (IG-SCC) does produce AEs with weak amplitude. This research studied whether the AEs are produced by break of the rust produced in ESCC. We found that the rust fracture in ECSS of AISI304 shell produced strong AEs with S/N ratio of over 10 dB and lOOmV and can monitor the ESCC by AE technique.