Fatigue failure investigation of pre-corroded and laser-welded Al-Cu-Mg-Ag Alloy with different temper condition
dc.creator | Zervaki, A. D. | en |
dc.creator | Kermanidis, A. T. | en |
dc.creator | Haidemenopoulos, G. N. | en |
dc.creator | Pantelakis, S. G. | en |
dc.date.accessioned | 2015-11-23T10:54:57Z | |
dc.date.available | 2015-11-23T10:54:57Z | |
dc.date.issued | 2010 | |
dc.identifier.isbn | 9786056141911 | |
dc.identifier.uri | http://hdl.handle.net/11615/34884 | |
dc.description.abstract | The fatigue failure mechanisms of pre-corroded, laser beam welded Al-Cu-Mg-Ag alloy in different temper conditions (T3,T8) have been investigated. Aging influences the corrosion behavior of laser welds. In the T3 temper, corrosion attack is in the form of pitting in the weld area, while in the T8 temper corrosion is in the form of intergranular corrosion in the base metal. In the latter case corrosion is attributed to the presence of grain boundary precipitates in the base metal. Corrosion degrades the fatigue behaviour of 2139 welds. The degradation is equal for both the T 3 and T 8 tempers and for the corrosion exposure selected in this study corresponds to a 52% reduction in fatigue limit. In both cases fatigue crack initiation is associated with corrosion pits. In the T3 temper, the fatigue crack initiation site is at the weld metal/HAZ interface, while for the T 8 temper the initiation site is at the base metal. Fatigue crack initiation in uncorroded 2139 welds occurs at the weld toe at the root side, the weld reinforcement playing a principal role as stress concentration site. The fatigue crack propagates through the PMZ and the weld metal in all cases. Fatigue crack initiation in the corroded 2139 welds occurs exclusively at corrosion pits which act as stress raisers. | en |
dc.source.uri | http://www.scopus.com/inward/record.url?eid=2-s2.0-79952657724&partnerID=40&md5=906d3601f5c174873d859f6a7ae06d2f | |
dc.subject | 2139 al-alloy | en |
dc.subject | Corrosion | en |
dc.subject | Fatigue performance | en |
dc.subject | Laser welding | en |
dc.subject | Al-alloy | en |
dc.subject | Al-Cu-Mg-Ag alloy | en |
dc.subject | Base metals | en |
dc.subject | Corrosion attack | en |
dc.subject | Corrosion behavior | en |
dc.subject | Corrosion pits | en |
dc.subject | Fatigue behaviour | en |
dc.subject | Fatigue crack initiation | en |
dc.subject | Fatigue cracks | en |
dc.subject | Fatigue failures | en |
dc.subject | Fatigue Limit | en |
dc.subject | Grain boundary precipitate | en |
dc.subject | Initiation sites | en |
dc.subject | Intergranular corrosion | en |
dc.subject | Laser welds | en |
dc.subject | Stress raisers | en |
dc.subject | Weld metal | en |
dc.subject | Weld reinforcement | en |
dc.subject | Weld toe | en |
dc.subject | Alloys | en |
dc.subject | Aluminum | en |
dc.subject | Crack initiation | en |
dc.subject | Cracks | en |
dc.subject | Fatigue crack propagation | en |
dc.subject | Grain boundaries | en |
dc.subject | Laser beam welding | en |
dc.subject | Metals | en |
dc.subject | Silver alloys | en |
dc.subject | Stress concentration | en |
dc.subject | Stress corrosion cracking | en |
dc.subject | Welds | en |
dc.subject | Corrosion fatigue | en |
dc.title | Fatigue failure investigation of pre-corroded and laser-welded Al-Cu-Mg-Ag Alloy with different temper condition | en |
dc.type | conferenceItem | en |
Dateien zu dieser Ressource
Dateien | Größe | Format | Anzeige |
---|---|---|---|
Zu diesem Dokument gibt es keine Dateien. |