Comparative study: Degree of sensitization and intergranular stress corrosion cracking susceptibility of type 304 stainless steel
- Indira Gandhi Centre for Atomic Research, Kalpakkam (India)
An attempt was made to correlate the susceptibility of type 304 stainless steel sensitized by isothermal exposures from 500 C to 700 C to intergranular stress corrosion cracking (IGSCC) in boiling 20% sodium chloride solution to the degree of sensitization (DOS) measured using the electrochemical potentiokinetic reactivation (EPR) test. No systematic correlation was detected over the entire time-temperature regime. However, for a given sensitizing temperature, IGSCC susceptibility increased with increasing DOS up to a certain value, with no further increase thereafter. This behavior was attributed to the difference in sensitivities of the EPR and IGSCC tests to chromium depletion at the grain boundaries (GB) during the sensitizing heat treatments.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 392620
- Journal Information:
- Corrosion, Journal Name: Corrosion Journal Issue: 10 Vol. 52; ISSN 0010-9312; ISSN CORRAK
- Country of Publication:
- United States
- Language:
- English
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