Effects of annealing temperature on microstructure and mechanical properties of cold sprayed AA7075

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dc.contributor.authorJudas, Jakubcs
dc.contributor.authorZapletal, Josefcs
dc.contributor.authorŘehořek, Lukášcs
dc.contributor.authorJan, Vítcs
dc.coverage.issue1cs
dc.coverage.volume43cs
dc.date.issued2023-01-01cs
dc.description.abstractThis paper examines the softening behaviour of cold sprayed 7075 aluminum alloy after isothermal annealing. The as-received powder was deposited by a high-pressure cold spray device using heated nitrogen as propellant gas. To investigate the effects of post-deposition heat treatment, the excised samples were isochronally annealed in the temperature range of 200 to 400 °C. The feedstock powder and the free-standing coatings were initially characterized through various electron microscopy techniques (SEM, EDS, EBSD) and relevant microstructural features were determined. Mechanical properties of the as-sprayed and heat-treated samples were evaluated by quasi-static tensile and microhardness testing. It has been shown that extensive plastic deformation during cold spraying resulted in a dense coating with relatively low internal porosity. Specimens in an as-deposited state possessed a high level of strain hardening and exhibited a brittle rupture associated with intersplat cracking. When subjected to heat treatment, the cold spray deposits showed a general trend of microhardness reduction and progressive sintering of the microstructure with increasing annealing temperature. Furthermore, post-mortem observation revealed a gradual transition in fracture mechanism, manifested by improving material ductility and the occurrence of typical dimple morphology. The aspects responsible for the softening of the cold sprayed 7075 alloys are discussed further.en
dc.formattextcs
dc.format.extent160-165cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationProcedia Structural Integrity. 2023, vol. 43, issue 1, p. 160-165.en
dc.identifier.doi10.1016/j.prostr.2022.12.252cs
dc.identifier.issn2452-3216cs
dc.identifier.orcid0009-0003-0759-7313cs
dc.identifier.orcid0000-0001-6121-7260cs
dc.identifier.orcid0000-0002-7026-7216cs
dc.identifier.orcid0000-0002-0433-0424cs
dc.identifier.other183216cs
dc.identifier.researcheridF-2670-2017cs
dc.identifier.researcheridE-3554-2012cs
dc.identifier.scopus23479029100cs
dc.identifier.scopus23478377400cs
dc.identifier.scopus7003427290cs
dc.identifier.urihttp://hdl.handle.net/11012/244299
dc.language.isoencs
dc.publisherElseviercs
dc.relation.ispartofProcedia Structural Integritycs
dc.relation.urihttps://www.sciencedirect.com/science/article/pii/S2452321622008150cs
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2452-3216/cs
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/cs
dc.subjectCold Sprayen
dc.subject7075 aluminum alloyen
dc.subjectisothermal annealingen
dc.subjecttensile testingen
dc.subjectelectron microscopyen
dc.titleEffects of annealing temperature on microstructure and mechanical properties of cold sprayed AA7075en
dc.type.driverconferenceObjecten
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-183216en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:49:06en
sync.item.modts2025.01.17 18:47:32en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav materiálových věd a inženýrstvícs
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