Stress-corrosion cracking steel susceptibility

Conference · Mon Jan 01 04:00:00 EST 1979

OSTI ID:6336376

Barlo, T J

The principal factors influencing stress-corrosion cracking (SCC) in line-pipe steels are (1) the environment next to the pipe, (2) the potential at the pipe surface, (3) the state of stress, (4) the temperature, and (5) the condition of the steel. The degree to which these conditions affect the pipe's integrity depends upon the microstructure, thermochemical history, and surface treatment of the steel. Although research has not identified one microstructure as being inherently more susceptible to SCC than another, partial decarburization at the surface can promote a more susceptible condition. The most probable role of microstructure is in the distribution of the microconstituents, which can control the steel's response to strain-age conditioning. Surface treatments such as shot peening and grit blasting can reduce a steel's susceptibility to SCC.

• OSTI ID: 6336376
• Report Number(s): CONF-7910293-
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
032000* -- Natural Gas-- Transport
Handling
& Storage
AGING
ALLOYS
CHEMICAL REACTIONS
CORROSION
CRACKING
DECOMPOSITION
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
IRON ALLOYS
IRON BASE ALLOYS
NATURAL GAS
PIPELINES
PYROLYSIS
STEELS
STRAIN AGING
STRESS CORROSION
THERMOCHEMICAL PROCESSES
TRANSPORT