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Spark Plasma Sintering and Upsetting of a Gas-Atomized/Air-Atomized Al Alloy Powder Mixture

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dc.contributor.authorTÜNÇAY, MEHMET MASUM
dc.contributor.authorsTuncay, Mehmet Masum; Muniz-Lerma, Jose Alberto; Bishop, Donald Paul; Brochu, Mathieu
dc.date.accessioned2022-03-14T08:30:07Z
dc.date.available2022-03-14T08:30:07Z
dc.date.issued2017-10
dc.description.abstractAl-Zn-Mg-Cu alloy powder, Alumix 431D, was modified by replacing the native air-atomized pure Al particles with gas-atomized pure Al. Samples were sintered using spark plasma sintering (SPS), and upset forging was applied to the sintered samples by SPS. Densities over 98 and 99% of theoretical were obtained for the sintered and forged samples, respectively. Microstructural analysis and characterization of all samples were done using energy-dispersive spectroscopy and x-ray diffraction. Mechanical properties were evaluated using microhardness and flexural strength and strain measurements. The microhardness value of the T6 tempered sample was comparable to that of its wrought counterpart AA7075. Particle bonding after sintering was incomplete and reveals that composite oxide layer of Al-Zn-Mg-Cu alloy powder is difficult to disrupt, and it is necessary to apply a secondary process like forging to improve particle bonding. The loss in ductility following T6 tempering is ascribed to void formation due to the dissolution of the secondary phases, remaining undissolved precipitates, and a localized lack of cohesion between particles.
dc.identifier.doi10.1007/s11665-017-2948-4
dc.identifier.eissn1544-1024
dc.identifier.issn1059-9495
dc.identifier.urihttps://hdl.handle.net/11424/241882
dc.identifier.wosWOS:000413117700047
dc.language.isoeng
dc.publisherSPRINGER
dc.relation.ispartofJOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectAl alloys
dc.subjectforging
dc.subjectmechanical properties
dc.subjectpowder blend
dc.subjectspark plasma sintering
dc.subjectMG-CU ALLOY
dc.subject7075 ALUMINUM-ALLOY
dc.subjectMECHANICAL-PROPERTIES
dc.subjectSURFACE OXIDE
dc.subjectMICROSTRUCTURAL EVOLUTION
dc.subjectHEAT-TREATMENT
dc.subjectPRECIPITATION
dc.subjectCONSOLIDATION
dc.subjectBLEND
dc.titleSpark Plasma Sintering and Upsetting of a Gas-Atomized/Air-Atomized Al Alloy Powder Mixture
dc.typearticle
dspace.entity.typePublication
local.avesis.ide72949dd-8d4e-4e33-86fa-f62b687cfe8a
local.import.packageSS16
local.indexed.atWOS
local.indexed.atSCOPUS
local.journal.numberofpages10
local.journal.quartileQ3
oaire.citation.endPage5106
oaire.citation.issue10
oaire.citation.startPage5097
oaire.citation.titleJOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
oaire.citation.volume26
relation.isAuthorOfPublicationd29bd461-eb55-4b01-ba97-1773d6335aca
relation.isAuthorOfPublication.latestForDiscoveryd29bd461-eb55-4b01-ba97-1773d6335aca

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