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dc.contributor.authorGreen, W. Paul
dc.contributor.authorKulas, Mary-Anne
dc.contributor.authorNiazi, Amanda
dc.contributor.authorOh-Ishi, Keiichiro
dc.contributor.authorTaleff, Eric M.
dc.contributor.authorKrajewski, Paul E.
dc.contributor.authorMcNelley, Terry R.
dc.date.accessioned2017-09-12T23:03:51Z
dc.date.available2017-09-12T23:03:51Z
dc.date.issued2006-09
dc.identifier.citationW.P. Green, M.-A. Kulas, A. Niazi, K. Oh-Ishi, E.M. Taleff, P.E. Krajewski, T.R. McNelley, "Deformation and failure of a superplastic AA5083 aluminum material with a Cu addition," Metallurgical and Materials Transactions A, v. 37A, (September 2006), pp. 2727-2738.en_US
dc.identifier.urihttp://hdl.handle.net/10945/55870
dc.description.abstractA modified AA5083 aluminum sheet material containing a Cu addition of 0.61 wt pct has been investigated under conditions relevant to commercial hot-forming technologies. This material was produced by continuous casting followed by industrial hot and cold rolling into sheet. Deformation and failure mechanisms at elevated temperatures were investigated through mechanical testing, thermal analysis, and microscopy. The effects of Cu addition are evaluated by comparisons with data from AA5083 sheet materials without Cu addition, produced both by continuous and direct-chill (DC) casting techniques. At low temperatures and fast strain rates, for which solute-drag (SD) creep governs deformation, the Cu addition slightly increases tensile ductility at 450 °C but does not otherwise alter deformation behaviors. At high temperatures and slow strain rates, for which grain- boundary-sliding (GBS) creep governs deformation, the Cu addition decreases flow stress and, at 450 °C, improves tensile ductility. A strong temperature dependence for tensile ductility results from the Cu addition; tensile ductility at 500 °C is notably reduced from that at 450 °C. The Cu addition creates platelike particles at grain boundaries, which produce incipient melting and the observed mechanical behavior.en_US
dc.format.extent12 p.en_US
dc.publisherElsevieren_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.titleDeformation and failure of a superplastic AA5083 aluminum material with a Cu additionen_US
dc.typeArticleen_US
dc.contributor.corporateNaval Postgraduate School (U.S.)en_US
dc.contributor.departmentMechanical Engineeringen_US


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