THE EFFECT OF CATHODIC PROTECTION POTENTIAL ON CORROSION FATIGUE CRACK GROWTH RATE OF AN OFFSHORE STRUCTURAL STEEL
Source abstract
Abstract
Abstract— Duplicate tests have been performed to determine the effect of cathodic protection potential on corrosion fatigue crack growth rate of a modern offshore structural steel, produced by thermo‐mechanically controlled processes. The experiments were carried out using compact tension specimens exposed to artificial seawater at 10°C and subjected to constant amplitude loading at 0.35 Hz. Reproducible results showed that the merits of cathodic protection potentials are strongly dependent on stress intensity ratio R and stress intensity range ΔK. It appears that a specific value of cathodic potential may not give comprehensive protection against corrosion fatigue within the spectrum of variable amplitude loading experienced in service. Fractography showed the initiation of secondary cracks on the fracture surface to be associated with the dissolution of calcium sulphide inclusions, regardless of imposed cathodic potential.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Fatigue and fracture mechanics · Material Properties and Failure Mechanisms · Hydrogen embrittlement and corrosion behaviors in metals
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (25)
Show source-provided references
1. 10.1007/BF0055101710.1007/BF00551017 ↗
2. Billingham J. · 1994 · 11
3. Uwer D. · 1991 · 11
4. Taylor D. · 1985
5. Gangloff R. P. · 1988 · 55
6. Bardal E. · 1990 · 81
7. Morgan H. G. · 1985
8. Morgan H. G. · 1981 · 25
9. Scott P. M. · 1983 · 23
10. Thorpe T. W. · 1986
11. Thorpe T. W. · 1986
12. BS7191:(1989) British standard specification for weldable structural steels for fixed offshore structures.
13. BS4360:(1986) Specification for weldable structural steels.
14. F. B.Pickering(1989)Some effects of non‐metallic inclusions on the properties of steels Mechanical Working and Steel Processing Proceedings 381–401.
15. BS 6980: Part 6:(1990);ISO 7539–6: 1989(E) Corrosion of metals and alloys‐stress corrosion testing‐part 6: Preparation and use of pre‐cracked specimens.
16. ASTM D1141–86(1986) Standard specification for substitute ocean water.
17. Turnbull A. · 1990
18. ASTM E647‐93(1993) American standard test method for measurement of fatigue crack growth.
19. L. N.McCartney P. E.Irving G. T.Symm P. M.CooperandA.Kurzfeld(1977)Measurement of crack lengths in compact tension and single edge notch specimens using a new electrical potential calibration NPL Report DMA(B) 3 February.
20. Yu J. · 1994 · 1190
21. Paris P. C. · 1963 · 85
22. Carney R. F. A. · 1989
23. Cole I. · 1990 · 419
24. 10.1016/0142-1123(91)90478-H10.1016/0142-1123(91)90478-H ↗
25. Kermani M. B. · 1989 · 447