Microtensile characterization of titanium 5111 alloy mechanical properties and comparison of failure mechanisms at two microstructural length scales

dc.contributor.authorNimer, Salahudin
dc.contributor.authorEverett, Richard K.
dc.contributor.authorZupan, Marc
dc.date.accessioned2019-10-23T14:29:26Z
dc.date.available2019-10-23T14:29:26Z
dc.date.issued2019-07-29
dc.description.abstractMicro-scale mechanical characterization of materials is a useful technique for understanding local material behavior, particularly where inhomogeneous materials or microstructures are present. In this work, a custom microsample testing system that utilizes digital image correlation (DIC) is used to measure the response of samples that have a 3 mm × 1 mm footprint and a cross sectional gage area of 250 μm × 250 μm. The mechanical behaviors of Ti-5111 base metal and friction stir weld refined microstructures were examined. In a novel use of strain contour mapping, microstructural analysis and measurements were performed directly on microsamples and these results were linked to the fractography and measured properties using the DIC data. Larger variations, in several mechanical properties, were measured in the base metal Ti-5111 than in the weld material. For example, the yield base metal stress was 771 ± 41 MPa versus 828 ± 9 MPa for the weld. These variations were found to be due to the larger colony structure of the wrought plate. The colonies in wrought plate Ti-5111 can be as large as 250 μm and were found to promote the formation of shear bands which resulted in reduced ductility.en_US
dc.description.sponsorshipThe authors would like to acknowledge the support of the Office of Naval Research (Contract number N00014-12-1-0415), and Naval Surface Warfare Center Carderock Division. SEM images were obtained at the UMBC NanoImaging Center.
dc.description.urihttps://www.sciencedirect.com/science/article/pii/S0264127519305192en_US
dc.format.extent10 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2rdhk-malc
dc.identifier.citationNimer, Salahudin; Everett, Richard K.; Zupan, Marc; Microtensile characterization of titanium 5111 alloy mechanical properties and comparison of failure mechanisms at two microstructural length scales; ; Materials & Design Volume 183; https://doi.org/10.1016/j.matdes.2019.108081en_US
dc.identifier.urihttps://doi.org/10.1016/j.matdes.2019.108081
dc.identifier.urihttp://hdl.handle.net/11603/15954
dc.language.isoen_USen_US
dc.publisherElsevier Ltd.en_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Mechanical Engineering Department Collection
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)*
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectTitanium alloysen_US
dc.subjectMechanical testingen_US
dc.subjectMicrostructureen_US
dc.subjectFriction stir weldingen_US
dc.titleMicrotensile characterization of titanium 5111 alloy mechanical properties and comparison of failure mechanisms at two microstructural length scalesen_US
dc.typeTexten_US

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