Crack propagation in Alloys 600 and 182 in simulated BWR environment
- ABB Atom, Vaesteras (Sweden)
- Electric Power Research Institute, Palo Alto, CA (United States)
- Swedish Nuclear Power Insp., Stockholm (Sweden)
Wrought Alloy 600 and weldments of Alloy 182 were tested in a laboratory loop with BWR normal water chemistry (NWC), clean or with 0.1 ppm sulfate. Crack propagation was measured on compact tension specimens under constant or cyclic load. The main focus was on the effect of carbon, phosphorus and sulfur in the materials, and for Alloy 182 also niobium and titanium. The materials were in various heat treatment conditions. Low carbon Alloy 600, or Alloy 182 with high titanium and niobium vs carbon concentrations, crack at lower rates than material with high carbon activity. Materials with low concentrations of phosphorus and sulfur cracked slower than those high in these elements in clean NWC, but no such effect was found in NWC with sulfate. Alloy 182 weld metal generally cracked at higher rates than Alloy 600.
- OSTI ID:
- 48053
- Report Number(s):
- CONF-910808--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Stress corrosion cracking of Alloys 600 and 182 in BWR environments. Interim report
Environmental cracking of Alloy 600 in BWR environments