Sulfide stress corrosion cracking of line pipe

Journal Article · Sat Apr 01 04:00:00 EST 1989 · Corrosion (Houston); (USA)

DOI:https://doi.org/10.5006/1.3577866· OSTI ID:7173236

Kimuro, M; Totsuka, N; Kurisu, T; Amano, K; Matsuyama, J; Nakai, Y ^[1]

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1. Iron and Steel Research Labs., Kawasaki Steel Corp., Chiba (JP)

This paper reports the sulfide stress corrosion cracking (SSC) behavior of line pipe steel investigated using the SSC test method in NACE Standard TMO177-77, Testing of Metals for Resistance to Sulfide Stress Cracking at Ambient Temperatures. SSC of base metal can be classified into two types, depending on microstructures. In ferrite-perlite steel, the first crack initiates parallel to the pipe surface and propagates perpendicularly to the axis of stress. In ferrite-bainite steel or low C-bainite steel, the crack initiates at the interface between the bainite particle and the ferrite. With decreasing carbon content, the threshold stress of SSC ({sigma}{sub th}) increases, but in low-carbon steel, the {sigma}{sub th} value of weld seam is lower than that of base metal. SSC of weld seams occurs at the softening zone in the heat-affected zone (HAZ) about 2 to 4 mm away from the fusion line.

• OSTI ID: 7173236
• Journal Information: Corrosion (Houston); (USA), Journal Name: Corrosion (Houston); (USA) Vol. 45:4; ISSN CORRA; ISSN 0010-9312
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360103 -- Metals & Alloys-- Mechanical Properties
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CARBON STEELS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CORROSION
CORROSION RESISTANCE
CORROSIVE EFFECTS
CRACKING
CRYSTAL STRUCTURE
DECOMPOSITION
FERRITIC STEELS
IRON ALLOYS
IRON BASE ALLOYS
JOINTS
MICROSTRUCTURE
PIPELINES
PYROLYSIS
STEELS
STRESS CORROSION
SULFIDES
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
WELDED JOINTS