Oxidation embrittlement of grain boundaries in nickel alloys
Creators
- 1. AECL Chalk River Lab., Chalk River, Ontario (Canada)
- 2. UMIST, Manchester (United Kingdom). Corrosion and Protection Centre
Description
Intergranular oxidation-embrittlement of Alloy 600 has been studied by surface analysis of fractured thin foils pre-exposed to hydrogenated steam at 400 C. The results are believed to be relevant to primary-water stress corrosion cracking in nuclear power plants. Earlier work had shown that pre-exposure to this environment caused several micrometers of intergranular failure during subsequent straining. This cracking had none of the characteristics of hydrogen embrittlement and could be due to oxidation of chromium and/or carbon at the grain boundaries, or to ingress of a monolayer of oxygen. New results show that an oxide phase of chromium does indeed penetrate but most of the cracking seems to be due to oxygen segregation. Sulfur was also found on the fractured boundaries
Additional details
Publishing Information
- Publisher
- NACE International.
- Imprint Place
- Houston, TX (United States)
- Imprint Title
- Corrosion/95 conference papers
- Imprint Pagination
- 5788 p.
- Journal Page Range
- p. 9, Paper 181.
Conference
- Title
- National Association of Corrosion Engineers (NACE) international annual conference and corrosion show.
- Acronym
- Corrosion '95
- Dates
- 26-31 Mar 1995.
- Place
- Orlando, FL (United States).
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 27004432
- Subject category
- S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Resource subtype / Literary indicator
- Conference, Numerical Data
- Descriptors DEI
- CANDU TYPE REACTORS; CRACK PROPAGATION; EMBRITTLEMENT; EXPERIMENTAL DATA; INCONEL 600; INTERGRANULAR CORROSION; NUCLEAR POWER PLANTS; OXIDATION; PRIMARY COOLANT CIRCUITS; STRESS CORROSION; WATER CHEMISTRY
- Descriptors DEC
- ALLOY-NI76CR15FE8; ALLOYS; ALUMINIUM ADDITIONS; CHEMICAL REACTIONS; CHEMISTRY; CHROMIUM ALLOYS; COOLING SYSTEMS; CORROSION; CORROSION RESISTANT ALLOYS; DATA; HEAT RESISTANT MATERIALS; HEAT RESISTING ALLOYS; HEAVY WATER MODERATED REACTORS; INCONEL ALLOYS; INFORMATION; IRON ALLOYS; MATERIALS; NICKEL ALLOYS; NICKEL BASE ALLOYS; NIMONIC; NUCLEAR FACILITIES; NUMERICAL DATA; POWER PLANTS; POWER REACTORS; PRESSURE TUBE REACTORS; REACTOR COMPONENTS; REACTOR COOLING SYSTEMS; REACTORS; THERMAL POWER PLANTS; THERMAL REACTORS; TITANIUM ADDITIONS; TRANSITION ELEMENT ALLOYS
Optional Information
- Secondary number(s)
- CONF-950304--.