Aluminum Alloy 5083 is increasingly used in the ship building industry due to its excellent corrosion resistance and its favorable mechanical properties. A significant application of this alloy is in high speed ferries, where the influence of dynamic loads is of great importance as well. However, the influence of a corrosive environment and/or a welded condition on the fatigue properties of nautical aluminum alloys has been studied only superficially. In the present paper the influence of a seawater environment in combination with a welded state is described. Both fatigue limits and SN-curves are given, as well as a fracture surface analysis. From these results the fracture and crack initiation mechanisms are explained. Particularly the penetration of seawater into sub-surface pores, that are present in the welded material, results in a significant drop in fatigue life time when the welded alloy is tested in seawater.
Issue Section:
Technical Papers
1.
Schipper, S., Schipper, H., Haszler, A., and Weber, G., 1997, “Development of Advanced Ship Building Materials at Koninklijke Hoogovens N.V..” Alumitech ’97, 2nd International Aluminum Conference and Trade Exposition, Atlanta, Georgia, The Aluminum Association, pp. 393–400.
2.
Raynaud, G. M., and Gomiero, P. H., 1996, “New Aluminum Products for Shipbuilding,” Aluminum, 11(3), pp. 29–33.
3.
Raynaud, G. M., and Gomiero, P. H., 1996, “Aluminum Alloys for the Marine Market,” Alluminio e Leghe, 8(79), pp. 73–77.
4.
Irving
, B.
, 1994
, “Welding the Four Most Popular Aluminum Alloys
,” Weld. J. (Miami, FL)
, 73
(2
), pp. 51
–55
.5.
Fredriksen, A., July 1997, “Fatigue Aspects of High Speed Craft,” Proceedings of the Fourth International Conference on Fast Sea Transportation, FAST ’97, Sydney, Australia, Baird Publications, Hong Kong, Vol. I, pp. 217–224.
6.
Calcraft
, R. C.
, Wahab
, M. A.
, Viano
, D. M.
, Schumann
, G. O.
, Phillips
, R. H.
, and Ahmed
, N. U.
, 1999
, “The Development of the Welding Procedures and Fatigue of Butt-Welded Structures of Aluminum-AA5383
,” J. Mater. Process. Technol.
, 92–93
, pp. 60
–65
.7.
Tveiten
, B. W.
, and Moan
, T.
, 2000
, “Determination of Structural Stress for Fatigue Assessment of Welded Aluminum Ship Details
,” Mar. Struct., Elsevier
, 13
(3
), pp. 189
–212
.8.
Takeuchi
, K.
, and Yosetsu
, K.
, 1989
, “Fatigue Strength of Aluminum Alloys XXX
,” Journal of Light Metal Welding and Construction
, 27
(11
), pp. 8
–15
.9.
Fatigue Data Book: Light Structural Alloys, 1995, ASM International, Materials Park, OH, pp. 397.
10.
McEvily, A. J., Jr., 1990, Atlas of Stress-Corrosion and Corrosion Fatigue Curves, ASM International, Materials Park, OH, pp. 541.
11.
Welding Kaiser Aluminum, Some Metallurgical Aspects of MIG and TIG Welding Aluminum Alloys, 1969, second edition, Kaiser Aluminum & Chemical Sales, Inc., Oakland, CA, pp. 9–11, Chpt. 9.
12.
ASTM D1141, 1990, Standard Specification for Substitute Ocean Water, ASTM, Philadelphia, PA.
13.
ASTM E466, 1996, Standard Practice for Conducting Force Controlled Constant Amplitude Axial Fatigue Tests of Metallic Materials, ASTM, Philadelphia, PA.
14.
ASTM STP No. 91, 1963, A Tentative Guide for Fatigue Testing and the Statistical Analysis of Fatigue Data: Supplement to Manual on Fatigue Testing, ASTM, Philadelphia, PA.
15.
Weibull, W., 1961, Fatigue Testing and the Analysis of Results, Pergamon Press, Oxford.
16.
Terasawa, K., 1979, “Fatigue Data Sheets for Structural Aluminum Alloys,” Japanese Light Metal Association.
17.
Czyryca, E. J., and Vassilaros, M. G., 1972, “Corrosion Fatigue of Marine Aluminum Alloys in Salt Water Environments,” Paper No. 24., Tri-Service Conference on Corrosion, Materials Advisory Group, Army Material Command and NACE, U.S.
18.
Elboujdaini
, M.
, and Ghali
, E.
, 1989
, “Corrosion Fatigue of Aluminum Alloys in Chloride Media
,” Mater. Sci. Forum
, 44–45
, pp. 153
–168
.19.
Harvey II, D. P., and Jolles, M. I., 1990, “Relationships Between Fractographic Features and Material Toughness,” Quantitative Methods in Fractography, STP No 1085, B. M. Straus, S. K. Putatunda, eds., ASTM, Philadelphia, PA, pp. 2.9–2.10.
20.
Murakami, Y., 1996, “Effects of Small Defects and Inhomogeneities on Fatigue Strength: Experiments, Model and Applications to Industry,” Mechanisms and Mechanics of Damage and Failure, ECF 11, pp. 31–42.
21.
Murakami, Y., and Endo, M., 1994, “Effects of Defects, Inclusions and Inhomogeneities on Fatigue Strength,” Fatigue, 16, Butterworth-Heinemann Ltd. pp. 163–182.
22.
Wanhill, R. J. H., and Schra, L., 1987, “Corrosion Fatigue Crack Arrest in Aluminum Alloys: Basic Data,” National Aerospace Laboratory NLR, pp. 117.
23.
Foley, R. T., 1983, “Localized Corrosion of Aluminum Alloys-A Review,” Corrosion, Conference on Control and Exploitation of the Corrosion of Aluminum Alloys, Cranfield, Bedfordshire, UK, 5–8 April 1983, 42, pp. 277.
24.
Li
, R.
, and Ferreira
, M. G. S.
, 1995
, “Chemical Dissolution and Electrochemical Dissolution Mechanism for the Initiation of Localized Corrosion
,” Mater. Sci. Forum
, 192–194
(1
), pp. 237
–252
.25.
Richardson
, J. A.
, and Wood
, G. C.
, 1970
, “Study of the Pitting Corrosion of Aluminum by Scanning Electron Microscopy
,” Corros. Sci.
, 10
(5
), pp. 313
–323
.26.
Wanhill, R. J. H., and Deluccia, J. J., 1986, “Fatigue in Aircraft Corrosion Testing: The First 10 Years,” Report Number NLR-MP-86009-U/ETN-87-99302, National Aerospace Laboratory, Structures and Materials Div, Amsterdam (Netherlands), presented at AGARD Structures and Materials Panel, 62nd SPM Meeting, Oslo, Norway.
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