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dc.date.accessioned2021-04-30T08:33:22Z
dc.date.available2021-04-30T08:33:22Z
dc.date.issued2021-04-21
dc.identifierdoi:10.17170/kobra-202104303785
dc.identifier.urihttp://hdl.handle.net/123456789/12762
dc.description.sponsorshipGefördert durch den Publikationsfonds der Universität Kassel
dc.language.isoeng
dc.rightsNamensnennung 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectthermo-mechanical processingeng
dc.subjectprecipitation-dislocation hardeningeng
dc.subjectrecrystallizationeng
dc.subjecthigh strength aluminum alloyseng
dc.subjecthot deformationeng
dc.subject.ddc620
dc.subject.ddc660
dc.subject.ddc670
dc.titleInfluence of hot deformation on the precipitation hardening of high-strength aluminum AA7075 during thermo-mechanical processingeng
dc.typeAufsatz
dcterms.abstractThe aim of this work was to investigate the effect of hot deformation on the aging behavior of precipitation-hardenable aluminum alloy AA7075 within a novel thermo-mechanical forming process, in order to gain insight into its precipitation kinetics. For this purpose, the material was formed at 420 °C after undergoing solution treatment to different strain levels ranging from 2% to 10% to obtain different dislocation densities. After undergoing hot deformation, aging at 120 °C with different parameters was carried out to improve the material hardness. The resulting material properties and microstructure evolution were characterized afterward using hardness measurements and a transmission electron microscope (TEM). TEM investigations revealed the formation of very fine particles for the material formed at 2%, as well as at 10%, of formed material, which act as effective barriers to dislocation motion. It was found that the response of artificial aging on the deformation degree in hot forming was less than expected due to the thermally activated mechanisms, leading to a decrease in dislocation density. Therefore, a dramatic increase in material hardness with the increase in hot deformation was not observed.eng
dcterms.accessRightsopen access
dcterms.creatorScharifi, Emad
dcterms.creatorShoshmina, Daria
dcterms.creatorBiegler, Stefan
dcterms.creatorWeidig, Ursula
dcterms.creatorSteinhoff, Kurt
dc.relation.doidoi:10.3390/met11050681
dc.subject.swdAluminiumlegierungger
dc.subject.swdDeformationger
dc.subject.swdAusscheidungger
dc.subject.swdThermomechanische Eigenschaftger
dc.type.versionpublishedVersion
dcterms.source.identifierEISSN 2075-4701
dcterms.source.issueIssue 5
dcterms.source.journalMetalseng
dcterms.source.volumeVolume 11
kup.iskupfalse
dcterms.source.articlenumber681


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