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dc.contributor.advisorMcNelley, T.R.
dc.contributor.authorStancy, Steven L.
dc.dateDecember 1995
dc.date.accessioned2012-07-31T19:53:10Z
dc.date.available2012-07-31T19:53:10Z
dc.date.issued1995-12
dc.identifier.urihttps://hdl.handle.net/10945/7478
dc.description.abstractThe first part of this study involved determining the mechanism by which elevated-temperature deformation occurred for selected tensile specimens from previous research on thermomechanically processed Al2519 alloy. Microtexture information in the form of discrete pole figures indicated that the most highly superplastic material had completely recrystallized and deformed via grain boundary sliding, whereas material that did not display superplastic behavior deformed via slip. The second part of the study was designed to achieve further refinement of the microstructure of Al2519 using the particle stimulated nucleation (PSN) model as a guide. Using the overaging parameters of the thermomechanical process (TMP) that had yielded the greatest elongation in previous work, additional material was processed but with varying final total processing strain. The resulting material was analyzed using backscatter electron (BSE) microscopy methods to evaluate the effect of total processing strain on the average grain size. The smallest true volume grain size was associated with the material with the highest total processing strain. jg p3.en_US
dc.description.urihttp://archive.org/details/assessmentofgrai109457478
dc.format.extent53 p.en_US
dc.language.isoen_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.titleAssessment of grain refinement by microtexture analysis in thermomechanically processed Al 2519 alloyen_US
dc.typeThesisen_US
dc.contributor.departmentMechanical Engineering
dc.description.serviceU.S. Navy (U.S.N.) author.en_US
etd.thesisdegree.nameM.S. in Mechanical Engineeringen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineMechanical Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US


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