Effect of specimen thickness on cracking susceptibility of alloy 600 in high-temperature water
- Ohio State Univ., Columbus, OH (United States). Fontana Corrosion Center
Alloy 600 tubing is known to suffer from intergranular (IG) stress corrosion cracking (IGSCC) when exposed to primary and secondary water in pressurized water reactors (PWR) of nuclear power plants. The effect of specimen thickness on the environmental crack growth rate (CGR) of alloy 600 in high-temperature water was studied. Results showed the environmentally induced CGR in high-temperature water did not change when the alloy 600 specimen thickness changed from 1 mm to 6 mm. Loading that enhanced plane stress conditions promoted transgranular (TG) cracking, and loading that reduced plane stress conditions promoted intergranular (IG) cracking. Results suggested that the criteria for fracture mechanics plane strain testing are too restrictive (conservative) for environmental testing purposes.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 46078
- Journal Information:
- Corrosion, Journal Name: Corrosion Journal Issue: 5 Vol. 51; ISSN 0010-9312; ISSN CORRAK
- Country of Publication:
- United States
- Language:
- English
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