Influence of pre-deformation on mechanical properties and microstructure of EN-AW 7075 aluminium alloy

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dc.citation.epage104
dc.citation.rankM34
dc.citation.spage104
dc.contributor.authorKovačević, Avram
dc.contributor.authorStamenković, Uroš
dc.contributor.authorNedeljković, Milan
dc.date.accessioned2025-09-15T09:48:50Z
dc.date.available2025-09-15T09:48:50Z
dc.date.issued2025
dc.descriptionAccording to the contract with number 451-03-137/2025–03/ 200131
dc.description.abstractThis study investigates the changes in mechanical properties and microstructure of the EN-AW 7075 aluminum alloy after thermomechanical treatment. The treatment included cold plastic deformation, induced by rolling prior to artificial aging at a temperature of 150 °C for 30 minutes. The variations in hardness and impact toughness were monitored depending on the applied thermomechanical treatment conditions. Hardness was determined using the Leeb method, while impact toughness was measured using the Charpy method. The lowest hardness values were recorded in the annealed condition (Temper O state), while the highest impact toughness was observed in the quenched condition (Temper W state). The applied cold plastic deformation induced before artificial aging significantly increased the hardness of the investigated alloy, accompanied by a progressive decrease in impact toughness. Optical microscopy was used to analyze the microstructural changes during the thermomechanical treatment. Precipitates of various sizes and morphologies were observed in the alloy structure. The annealed condition was characterized by poorly defined grain boundaries and coarse secondary phase particles uniformly distributed within the matrix. Cold plastic deformation before aging resulted in a structure oriented in the rolling direction and refined secondary phase particles.
dc.description.sponsorshipMinistry of Science, Technological Development and Innovations of the Republic of Serbia
dc.identifier.isbn978-86-919111-8-8
dc.identifier.urihttps://zenodo.org/records/13303138
dc.identifier.urihttps://repozitorijum.tfbor.bg.ac.rs/handle/123456789/5999
dc.language.isoen
dc.publisherMaterials Research Society of Serbia
dc.rights.licenseARR
dc.rights.uriAll rights reserved
dc.sourceProgramme and The Book of Abstracts - Twenty-sixth Annual Conference YUCOMAT 2025, Herceg Novi, Montenegro, September 1-5, 2025
dc.subject7075
dc.subjectAluminium
dc.subjectheat-treatment
dc.subjectplastic deformation
dc.titleInfluence of pre-deformation on mechanical properties and microstructure of EN-AW 7075 aluminium alloy
dc.typeconferenceObject
dc.type.versionpublishedVersion

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