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Improvement in fatigue life of Al 7475-T7351 alloy specimens by applying ultrasonic and microshot peening

2016-11Journal article Restricted access
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dc.contributor.authorRamos, R.
dc.contributor.authorFerreira, N.
dc.contributor.authorFerreira, J.A.M.
dc.contributor.authorCapela, Carlos
dc.contributor.authorBatista, A.C.
dc.date.accessioned2025-05-21T09:34:37Z
dc.date.available2025-05-21T09:34:37Z
dc.date.issued2016-11
dc.description.abstractShot peening and ultrasonic peening are widely used mechanical surface treatment in the automotive and aerospace industries to improve the fatigue life of metallic components. This work aims to further improve the mechanical properties of the AA7475-T7351 alloy by applying three different peening processes: Ultrasonic Peening (USP) and Microshot Peening with two different beads size (MSP). A systematic study was carried out on the roughness, surface hardening, residual stress profiles and fatigue life. Uniaxial fatigue tests were conducted. Residual stresses were evaluated by X-ray diffraction, and the fracture surface was observed and analysed with a Scanning Electron Microscope. The microstructures of the specimens were observed by optic microscope. Microhardness and roughness were also measured. All of the surface treatments enhanced the specimens fatigue lives, despite having created different superficial conditions. In addition, the experimental results and analytic predictions based on the Molski-Glinka approach were compared, and in general, agree well.eng
dc.identifier.citationR. Ramos, N. Ferreira, J.A.M. Ferreira, C. Capela, A.C. Batista, Improvement in fatigue life of Al 7475-T7351 alloy specimens by applying ultrasonic and microshot peening, International Journal of Fatigue, Volume 92, Part 1, 2016, Pages 87-95, ISSN 0142-1123, https://doi.org/10.1016/j.ijfatigue.2016.06.022.
dc.identifier.doi10.1016/j.ijfatigue.2016.06.022
dc.identifier.issn0142-1123
dc.identifier.urihttp://hdl.handle.net/10400.8/12945
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier BV
dc.relation.hasversionhttps://www.sciencedirect.com/science/article/pii/S0142112316301669
dc.relation.ispartofInternational Journal of Fatigue
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectAluminium alloys
dc.subjectUltrasonic peening
dc.subjectMicroshot peening
dc.subjectFatigue life enhancement
dc.titleImprovement in fatigue life of Al 7475-T7351 alloy specimens by applying ultrasonic and microshot peening
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage95
oaire.citation.startPage87
oaire.citation.titleInternational Journal of Fatigue
oaire.citation.volume92
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameCapela
person.givenNameCarlos
person.identifier.ciencia-id9B1E-6857-3D6B
person.identifier.orcid0000-0003-3334-4945
person.identifier.ridG-6395-2016
person.identifier.scopus-author-id7801358401
relation.isAuthorOfPublication9b079aa3-b79b-4395-b081-1f23d6a17514
relation.isAuthorOfPublication.latestForDiscovery9b079aa3-b79b-4395-b081-1f23d6a17514

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