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dc.contributor.advisorMcNelley, Terry
dc.contributor.authorStewart, William Chad
dc.date.accessioned2012-03-14T17:46:35Z
dc.date.available2012-03-14T17:46:35Z
dc.date.issued2011-03
dc.identifier.urihttp://hdl.handle.net/10945/5741
dc.description.abstractThe purpose of this thesis is to determine the feasibility of underwater friction stir welding (FSW) of high-strength; quench and temper low carbon steels that are susceptible to hydrogen-assisted cracking (HAC). The specific benefits of underwater FSW would be weld repairs of ship and submarine control surfaces and hulls without the need for drydocking and extensive environmental control procedures. A single tool of polycrystalline cubic boron nitride (PCBN) in a Tungsten-Rhenium binder was used to conduct three bead-on-plate FSW traverses, approximately 40 inches in length on 0.25 inch HY-80 steel. The first traverse was a dry weld and the second and third traverse were wet (underwater) welds, all conducted at a combination of 400 revolutions per minute and 2 inches per minute. The wet welds were conducted for the purpose of assessing the HAC susceptibility of the process.en_US
dc.description.urihttp://archive.org/details/feasibilityofund109455741
dc.format.extentxvi, 35 p. : col. ill. ;en_US
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.subject.lcshFriction stir weldingen_US
dc.subject.lcshSteel, High strengthen_US
dc.subject.lcshSteelen_US
dc.titleFeasibility of underwater friction stir welding of HY-80 steelen_US
dc.typeThesisen_US
dc.contributor.secondreaderMenon, Sarath
dc.contributor.corporateNaval Postgraduate School (U.S.).
dc.contributor.departmentMechanical Engineering and Aerospace Engineering
dc.identifier.oclc720401369
etd.thesisdegree.nameM.S.en_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineMechanical Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
etd.verifiednoen_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.


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