Show simple item record

dc.contributor.authorKhodabakhshi, Farzad
dc.contributor.authorGerlich, Adrian P.
dc.date.accessioned2018-01-29 19:33:07 (GMT)
dc.date.available2018-01-29 19:33:07 (GMT)
dc.date.issued2018-02-01
dc.identifier.urihttp:/dx.doi.org/10.1016/j.matchar.2017.12.023
dc.identifier.urihttp://hdl.handle.net/10012/12971
dc.descriptionThe final publication is available at Elsevier via http:/dx.doi.org/10.1016/j.matchar.2017.12.023 © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.description.abstractA novel severe plastic deformation (SPD) process termed accumulative fold forging (AFF) is introduced to fabricate a homogenous ultra-fine grained (UFG) layered metal structure by repetitive folding and forging aluminum alloy foil. The present work studies AFF applied to thin foils of AA8006 Al-Fe-Mn aluminum alloy after 26 folding steps to produce a UFG structure containing 67,108,864 layers across a 2mm thickness. The structure of the layers and grain refinement are studied using X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM) and scanning-transmission electron microscopy (STEM) analysis. The results indicate a well-bonded inter-layer structure with an average grain size of about 200nm parallel and 250nm perpendicular to the forging direction, while dislocation density increased to ~7.2×1015m−2 following AFF. The mechanical strength of the aluminum foil is evaluated in the terms of indentation hardness testing before and after AFF process. The processed UFGed layered material exhibited an average hardness value of ~61.5 Vickers as compared to the initial value of ~30.4 Vickers for the annealed foil alloy, which indicates an improvement of ~100% due to the contributions of grain refinement, work hardening and interfacial strengthening of the bonded layers.en
dc.description.sponsorshipNatural Sciences and Engineering Research Council of Canada (NSERC)en
dc.language.isoenen
dc.publisherElsevieren
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectAA8006 alloyen
dc.subjectAccumulative fold forging (AFF)en
dc.subjectAluminum foilen
dc.subjectIndentation hardnessen
dc.subjectSevere plastic deformation (SPD)en
dc.subjectUltra-fine grained (UFG)en
dc.titleAccumulative fold-forging (AFF) as a novel severe plastic deformation process to fabricate a high strength ultra-fine grained layered aluminum alloy structureen
dc.typeArticleen
dcterms.bibliographicCitationKhodabakhshi, F., & Gerlich, A. P. (2018). Accumulative fold-forging (AFF) as a novel severe plastic deformation process to fabricate a high strength ultra-fine grained layered aluminum alloy structure. Materials Characterization, 136, 229–239. https://doi.org/10.1016/j.matchar.2017.12.023en
uws.contributor.affiliation1Faculty of Engineeringen
uws.contributor.affiliation2Mechanical and Mechatronics Engineeringen
uws.typeOfResourceTexten
uws.typeOfResourceTexten
uws.peerReviewStatusRevieweden
uws.scholarLevelFacultyen


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record

Attribution-NonCommercial-NoDerivatives 4.0 International
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 International

UWSpace

University of Waterloo Library
200 University Avenue West
Waterloo, Ontario, Canada N2L 3G1
519 888 4883

All items in UWSpace are protected by copyright, with all rights reserved.

DSpace software

Service outages