Corrosion-Fatigue Crack Growth in Age-Hardened Al Alloys: Examples of Failures and Explanations for Fractographic Observations
2014 ◽
Vol 891-892
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pp. 248-253
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Keyword(s):
The characteristics of corrosion-fatigue in age-hardened Al alloys, e.g. brittle striations on cleavage-like facets, are described, with reference to two examples of component failure. Mechanisms of corrosion fatigue (and explanations for fracture-surface features) are then reviewed. New observations of corrosion-fatigue crack growth for 7050-T7451 alloy compact-tension specimens tested in aqueous environments using a constant (intermediate) ΔK value but different cycle frequencies are then described and discussed. These observations provide additional support for a hydrogen-embrittlement process involving adsorption-induced dislocation-emission from crack tips.
1989 ◽
Vol 32
(2)
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pp. 282-286
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2015 ◽
Vol 39
(4)
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pp. 395-411
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1987 ◽
Vol 26
(3)
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pp. 251-257
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2017 ◽
Vol 40
(11)
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pp. 1868-1881
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