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dc.creatorStroud, Adam
dc.date.accessioned2018-05-30T21:06:28Z
dc.date.available2018-05-30T21:06:28Z
dc.date.created2017-12
dc.date.issued2017-12
dc.date.submittedDecember 2017
dc.identifier.urihttp://hdl.handle.net/2346/73752
dc.description.abstractWhen attempting to extrude from alpha-beta titanium alloys, the dimensional control and surface quality often do not align with requirements of a machined component. The performance degrades as the thickness of the attempted extrusion shape is reduced to closer to a final thickness. A number of factors influence this behavior and include: lubrication, thermal effects, deformation rates, and strain concentrators. As a result, it is common to require extrusions to be machined into a final component resulting in material losses and costs associated with machining. In order to alleviate this challenge a roller reduction system, for finishing the extrusion down to “machined like” thickness and surface quality, was developed. A design strategy was employed that aligned the machine architecture to the product needs and material behaviors of titanium. Titanium material behaviors were considered in the system design including: shear banding, crystallographic texture, strain induced porosity, cracking, surface galling, rapid surface cooling, and surface layer development. A study of processing parameters was performed to characterize material response to processing temperature and rolling rate. This system was used to produce a T shaped titanium extrusion down to thicknesses and surface quality commensurate with a finished component. The validation of the processes impact on material properties was also studied and verified that wrought material properties can be met.
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.subjectTitanium
dc.subjectExtrusion
dc.subjectRolling
dc.subjectNet shape
dc.titleDevelopment of net shape structural titanium manufacturing capability using the system of systems design approach
dc.typeDissertation
dc.date.updated2018-05-30T21:06:29Z
dc.type.materialtext
thesis.degree.nameDoctor of Philosophy
thesis.degree.levelDoctoral
thesis.degree.disciplineMechanical Engineering
thesis.degree.grantorTexas Tech University
thesis.degree.departmentMechanical Engineering
dc.contributor.committeeMemberRasty, Jahan
dc.contributor.committeeMemberAksak, Burak
dc.contributor.committeeMemberMengel, Susan A.
dc.rights.availabilityRestricted until 2019-12.
local.embargo.terms2019-12-01
local.embargo.lift2019-12-01


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