Microstructural analysis of TI-6Al-4V components made by electron beam additive manufacturing

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dc.contributor Allison, Paul Galon
dc.contributor Jordon, J. Brian
dc.contributor Monroe, Charles A.
dc.contributor Weaver, Mark Lovell
dc.contributor.advisor Acoff, Viola L.
dc.contributor.author Coleman, Rashadd
dc.date.accessioned 2018-01-19T19:38:54Z
dc.date.available 2018-01-19T19:38:54Z
dc.date.issued 2017
dc.identifier.other u0015_0000001_0002804
dc.identifier.other Coleman_alatus_0004D_13253
dc.identifier.uri http://ir.ua.edu/handle/123456789/3442
dc.description Electronic Thesis or Dissertation
dc.description.abstract Electron Beam Additive Manufacturing (EBAM) is a relatively new additive manufacturing (AM) technology that uses a high-energy electron beam to melt and fuse powders to build full-density parts in a layer by layer fashion. EBAM can fabricate metallic components, particularly, of complex shapes, in an efficient and cost-effective manner compared to conventional manufacturing means. EBAM is an enabling technology for rapid manufacturing (RM) of metallic components, and thus, can efficiently integrate the design and manufacturing of aerospace components. However, EBAM for aerospace-related applications remain limited because the effect of the EBAM process on part characteristics is not fully understood. In this study, various techniques including microhardness, optical microscopy (OM), X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), and electron backscatter diffraction (EBSD) were used to characterize Ti-6Al-4V components processed using EBAM. The results were compared to Ti-6Al-4V components processed using conventional techniques. In this study it is shown that EBAM built Ti-64 components have increased hardness, elastic modulus, and yield strength compared to wrought Ti-6Al-4V. Further, it is also shown in this study that the horizontal build EBAM Ti-6Al-4V has increased hardness, elastic modulus, and yield strength compared to vertical build EBAM due to a preferential growth of the β phase.
dc.format.extent 95 p.
dc.format.medium electronic
dc.format.mimetype application/pdf
dc.language English
dc.language.iso en_US
dc.publisher University of Alabama Libraries
dc.relation.ispartof The University of Alabama Electronic Theses and Dissertations
dc.relation.ispartof The University of Alabama Libraries Digital Collections
dc.relation.hasversion born digital
dc.rights All rights reserved by the author unless otherwise indicated.
dc.subject.other Materials Science
dc.subject.other Mechanical engineering
dc.title Microstructural analysis of TI-6Al-4V components made by electron beam additive manufacturing
dc.type thesis
dc.type text
etdms.degree.department University of Alabama. Dept. of Metallurgical and Materials Engineering
etdms.degree.discipline Metallurgical/Materials Engineering
etdms.degree.grantor The University of Alabama
etdms.degree.level doctoral
etdms.degree.name Ph.D.


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