A test method to evaluate stress corrosion cracking in pressure vessels

Journal Article · Mon Feb 01 00:00:00 EST 1988 · Mater. Performance; (United States)

OSTI ID:5070897

Singbeil, D; Garner, A

An accelerated laboratory test method was developed to evaluate the stress corrosion cracking (SCC) of kraft continuous digesters. The method uses circular patch test welds made from 38-mm-thick ASTM A516 Grade 70 steel plate. The specimens were exposed to a 110 C solution containing 40 gLNaOH and 20 gLNa/sub 2/S at a controlled electrochemical potential. Several different welding procedures were evaluated for resistance to SCC, along with stress relief, shotpeening, sealed thermal spray coatings, and weld overlays of Inconel/sup (1)/ 82 and AISI 309L stainless steel (SS). Stress relief, shotpeening, and sealed thermal spray coatings prevented SCC during the test. Compared to a control specimen, SCC was less severe after temper-bead welding and after welding with an E6010 capping pass. Severe SCC occurred in a specimen welded with the worst-case welding procedure. Deep, circumferential SCC occurred in the carbon steel at the edge of the Inconel 82 weld overlay. SCC was also observed at the interface between the AISI 309L SS weld overlay and the base plate.

• Research Organization: Pulp and Paper Research Institute of Canada, 570 St. John's Blvd., Pointe Claire, P.Q. (CA)
• OSTI ID: 5070897
• Journal Information: Mater. Performance; (United States), Vol. 27:2
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CARBON STEELS
STRESS CORROSION
WELDING
INCONEL 82
PRESSURE VESSELS
FRACTURE MECHANICS
STAINLESS STEEL-309
CORROSIVE EFFECTS
CRACKS
DESTRUCTIVE TESTING
EXPERIMENT PLANNING
PLATES
SODIUM HYDROXIDES
SODIUM SULFIDES
STEELS
STRESS ANALYSIS
WELDED JOINTS
ALKALI METAL COMPOUNDS
ALLOYS
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CONTAINERS
CORROSION
CORROSION RESISTANT ALLOYS
FABRICATION
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HYDROGEN COMPOUNDS
HYDROXIDES
INCONEL ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
JOINING
JOINTS
MANGANESE ALLOYS
MATERIALS
MATERIALS TESTING
MECHANICS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ALLOYS
OXYGEN COMPOUNDS
PLANNING
SODIUM COMPOUNDS
STAINLESS STEELS
SULFIDES
SULFUR COMPOUNDS
TANTALUM ALLOYS
TESTING
360105* - Metals & Alloys- Corrosion & Erosion
360101 - Metals & Alloys- Preparation & Fabrication