The use of slow strain rate testing to determine the effect of elemental sulfur on stress corrosion cracking of nickel-base alloys
- Battelle, Columbus, OH (United States)
- Haynes International, Kokomo, IN (United States)
- Vallourec Research Center, Aulnoye (France)
- Chevron Petroleum Technology Co., Houston, TX (United States)
To understand the role of elemental sulfite in the stress corrosion cracking (SCC) of corrosion resistant alloys, researchers have tried various test techniques and methodologies with limited success. The authors feel they have developed a reliable test method for charging sulfite into Slow Strain Rate Test (SSRT) autoclaves. An effective SSRT method using a special cup-sulfur cell, has been described to evaluate the susceptibility to SCC in sulfur containing environments. The results obtained are reproducible and reliable. Using this test method, the effect of chloride concentration on the threshold temperature for SCC in sulfur containing sour brine has been initially evaluated. UNS N06950 was determined to have a higher temperature threshold compared with UNS N06255 and UNS N06985.
- OSTI ID:
- 70062
- Report Number(s):
- CONF-940222--
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
03 NATURAL GAS
36 MATERIALS SCIENCE
CARBON ADDITIONS
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
CORROSIVE EFFECTS
CRACK PROPAGATION
EXPERIMENTAL DATA
HASTELLOYS
HYDROGEN SULFIDES
IRON ALLOYS
MECHANICAL TESTS
MOLYBDENUM ALLOYS
NATURAL GAS WELLS
NICKEL BASE ALLOYS
OIL WELLS
STRESS CORROSION
TUNGSTEN ADDITIONS