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dc.contributor.authorGarcia-Infanta, J. M.
dc.contributor.authorSwaminathan, S.
dc.contributor.authorZhilyaev, A. P.
dc.contributor.authorCarreno, F.
dc.contributor.authorRuano, O. A.
dc.contributor.authorMcNelley, T. R.
dc.date.accessioned2014-08-29T18:25:11Z
dc.date.available2014-08-29T18:25:11Z
dc.date.issued2008
dc.identifier.citationMaterials Science and Engineering A, v. 485, 2008, pp. 160-175
dc.identifier.urihttp://hdl.handle.net/10945/43166
dc.description.abstractAn as-cast Al–7 wt.% Si alloy was subjected to repetitive equal channel angular pressing (ECAP) using a 90◦ die at ambient temperature and following either route A, which involves monotonically increasing strain through a sequence of passes, or route BC, wherein the strains are redundant after every four passes. Microstructures were characterized by optical microscopy (OM), scanning electron microscopy (SEM) and orientation imaging microscopy (OIM). The shape changes of the microstructure constituents mirror the idealized straining for repetitive processing by these routes. Thus, the morphology and distribution of the eutectic constituent in processed materials reflect mainly geometrical effects, although elongated Si and Al5FeSi particles in the eutectic are also broken up. Grain refinement in the primary Al constituent is also strain-path dependent:grain subdivision combined with geometric effects is operative in material processed by route A, while grain subdivision alone predominates in material processed by route BC.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.titleMicrostructural development during equal channel angular pressing of hypo-eutectic Al-Si casting alloy by different processing routesen_US
dc.typeArticleen_US
dc.contributor.corporateNaval Postgraduate School
dc.contributor.departmentDepartment of Mechanical and Astrophysical Engineering
dc.subject.authorAluminum-silicon alloysen_US
dc.subject.authorEqual channel anfular pressingen_US
dc.subject.authorStrain pathen_US
dc.subject.authorMicrostructureen_US
dc.subject.authorMicrotextureen_US
dc.subject.authorShear textureen_US


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