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dc.contributor.advisorBahr, Behnamen_US
dc.contributor.authorWidener, Christian Aragonen
dc.date.accessioned2007-07-22T08:29:44Z
dc.date.available2007-07-22T08:29:44Z
dc.date.issued2005-12
dc.identifier.isbn978054271640
dc.identifier.otherd05004
dc.identifier.otherAAT 3219429 Proquest
dc.identifier.urihttp://hdl.handle.net/10057/612
dc.description"December 2005."en
dc.descriptionThesis (Ph.D.)--Wichita State University, College of Engineering, Dept. of Mechanical Engineeringen
dc.description.abstractThis dissertation presents the results of an investigation into the corrosion resistance of friction stir welding (FSW) for aerospace structures. Two of the most common aerospace aluminum alloys, 2024 and 7075, were investigated. In the as-welded condition, both alloys were found to be highly susceptible to exfoliation corrosion, and 7075 was found to be susceptible to stress corrosion cracking as well. The goal of this research was to identify proper initial temper selection and postweld aging treatments for enhancing the corrosion resistance of both 2024 and 7075 alloys, and their dissimilar joints. A large number of heat treatments were investigated for 7075 in the T6 and T73 tempers, including retrogression re-aging (RRA). Heat treatments were also investigated for 2024-T3 and 2024-T81. Samples were evaluated for resistance to exfoliation corrosion using optical microscopy. Microhardness, electrical conductivity, tension, and fatigue crack propagation tests were also performed on the samples. Beneficial heat treatments were found for both alloys as well as for their dissimilar joints.en
dc.format.extent10808230 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen
dc.rightsCopyright Christian Aragon Widener, 2005. All rights reserved.en
dc.subjectPost-welden
dc.subjectHeat treatmentsen
dc.subjectCorrosionen
dc.subjectAluminum alloysen
dc.subjectFriction stir weldingen
dc.subject.lcshElectronic dissertationsen
dc.titleEvaluation of post-weld heat treatments for corrosion protection in friction stir welded 2024 and 7075 aluminum alloysen
dc.typeDissertationen
dc.identifier.oclc84906016en


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