Influence of microstructure on SSC susceptibility of low alloy high strength oil country tubular goods

Conference · Thu Jan 01 00:00:00 EST 1987

OSTI ID:7005633

Kaneko, T; Okada, Y; Ikeda, A

The influences of microstructural factors, such as a distribution of precipitates and an internal strain after tempering, on SSC susceptibilities are investigated. It is revealed that a homogenous dispersion of spheroidized fine carbides and a reduction of locally concentrated internal strains in the course of recovery and recrystallization are preferable to improve the SSC resistance of low alloyed steel. Microstructure refinement is effective in increasing Luders elongations and permits larger allowance of plastic deformations to initiate SSC. With regard to the limitation of maximum hardness or strength for sour service, an existence of the critical strain to SSC is discussed. Utilizing the technique of microstructure control, C-100 grade OCTG are developed. SSC susceptibilities of trial products are examined using various kinds of SSC evaluation methods. Characteristics and comparisons of testing methods are also discussed.

• OSTI ID: 7005633
• Report Number(s): CONF-870314-
• Resource Relation: Conference: Corrosion '87, San Francisco, CA, USA, 9 Mar 1987
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
02 PETROLEUM
PIPELINES
CORROSION RESISTANCE
STEELS
STRESS CORROSION
STRUCTURAL CHEMICAL ANALYSIS
CARBIDES
CORROSION PRODUCTS
CORROSION RESISTANT ALLOYS
CORROSIVE EFFECTS
CRACKS
MICROSTRUCTURE
PETROLEUM
PHYSICAL METALLURGY
PRECIPITATION
RECRYSTALLIZATION
STRAINS
STRESS ANALYSIS
TEMPERING
TRANSPORT
ALLOYS
CARBON COMPOUNDS
CHEMICAL REACTIONS
CORROSION
CRYSTAL STRUCTURE
ENERGY SOURCES
FOSSIL FUELS
FUELS
HEAT TREATMENTS
IRON ALLOYS
IRON BASE ALLOYS
METALLURGY
SEPARATION PROCESSES
360105* - Metals & Alloys- Corrosion & Erosion
360102 - Metals & Alloys- Structure & Phase Studies
022000 - Petroleum- Transport
Handling
& Storage