We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Welding Hot Cracking of Side Shell of Drilling-Well Oil Storage Ship.
- Authors
Yu, Zhi-wei; Xu, Xiao-lei
- Abstract
Cracks were found in the weld metal (WM) of weld-section of side shell of drilling-well oil storage ship when performing post weld radiographic examination. The cracks were subjected to detailed metallographic analysis and the fracture surfaces were observed visually and using SEM. The results indicate that the cracks were embedded in middle of multiple beads of WM. The fracture surface reveals the dendritic solidification structure of WM, which contains impurity element sulfur and other alloy elements (Ti, Al, and O) originating from the filler core of welding wire. The embedded cracks are a type of weld hot crack, the solidification crack. The failure mechanism is identified to be welding hot cracking.
- Subjects
OFFSHORE structure failures; CRACKING of welded joints; OIL storage tanks; INDUSTRIAL radiography; METALLIC surfaces; SCANNING electron microscopy
- Publication
Journal of Failure Analysis & Prevention, 2014, Vol 14, Issue 6, p763
- ISSN
1547-7029
- Publication type
Article
- DOI
10.1007/s11668-014-9889-0