Fracture toughness of some materials used in fabricating fixed offshore structures

Conference · Thu Jan 01 04:00:00 EST 1981 · SPE Repr. Ser.; (United States)

OSTI ID:6416797

Pisarski, H G

The results of an investigation of the fracture toughness of weld metals and heat affected zones (HAZ) in steels typical of those used in the fabrication of nodal joints in fixed offshore steel jacket platforms operating in the North Sea are summarized. Data are presented from fracture roughness tests, based upon the crack tip opening displacement concept, on welded joints from 25 mm to 100 mm thick. Weld metal toughness measurements were made on joints manufactured following realistic weld procedures and deposited using 10 different consumables which included shielded metal arc and semi-automatic processes. The results demonstrate that for joints in the as-welded conditions, the HAZ has a significantly higher resistance to brittle fracture than the weld metal. However, after post weld heat treatment the brittle fracture resistance of the weld metal was improved. 20 references.

• OSTI ID: 6416797
• Report Number(s): CONF-8105157-
• Conference Information: Journal Name: SPE Repr. Ser.; (United States) Journal Volume: 13
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
42 ENGINEERING
423000* -- Engineering-- Marine Engineering-- (1980-)
ALLOYS
ATLANTIC OCEAN
BRITTLENESS
COMMINUTION
DRILLING
FABRICATION
FAILURES
FRACTURING
IRON ALLOYS
IRON BASE ALLOYS
JOINTS
MATERIALS TESTING
MECHANICAL PROPERTIES
NORTH SEA
OFFSHORE DRILLING
OFFSHORE PLATFORMS
SEAS
SPECIFICATIONS
STEELS
SURFACE WATERS
TESTING
WELDED JOINTS