Residual stress influence on fatigue lifetimes of electroplated AISI 4340 high strength steel

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorVoorwald, H. J. C.
dc.creatorRocha, P. C. F.
dc.creatorCioffi, M. O. H.
dc.creatorCosta, M. Y. P.
dc.date2014-05-20T13:28:08Z
dc.date2016-10-25T16:47:54Z
dc.date2014-05-20T13:28:08Z
dc.date2016-10-25T16:47:54Z
dc.date2007-11-01
dc.date.accessioned2017-04-05T20:10:31Z
dc.date.available2017-04-05T20:10:31Z
dc.identifierFatigue & Fracture of Engineering Materials & Structures. Oxford: Blackwell Publishing, v. 30, n. 11, p. 1084-1097, 2007.
dc.identifier8756-758X
dc.identifierhttp://hdl.handle.net/11449/9334
dc.identifierhttp://acervodigital.unesp.br/handle/11449/9334
dc.identifier10.1111/j.1460-2695.2007.01178.x
dc.identifierWOS:000250145500009
dc.identifierhttp://dx.doi.org/10.1111/j.1460-2695.2007.01178.x
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/857509
dc.descriptionResidual stresses play an important role in the fatigue lives of structural engineering components. In the case of near surface tensile residual stresses, the initiation and propagation phases of fatigue process are accelerated; on the other hand, compressive residual stresses close to the surface may increase fatigue life. In both decorative and functional applications, chromium electroplating results in excellent wear and corrosion resistance. However, it is well known that it reduces the fatigue strength of a component. This is due to high tensile internal stresses and microcrack density. Efforts to improve hard chromium properties have increased in recent years. In this study, the effect of a nickel layer sulphamate process, as simple layer and interlayer, on fatigue strength of hard chromium electroplated AISI 4340 steel hardness - HRc 53, was analysed. The analysis was performed by rotating bending fatigue tests on AISI 4340 steel specimens with the following experimental groups: base material, hard chromium electroplated, sulphamate nickel electroplated, sulphamate nickel interlayer on hard chromium electroplated and electroless nickel interlayer on hard chromium electroplated. Results showed a decrease in fatigue strength in coated specimens and that both nickel plating interlayers were responsible for the increase in fatigue life of AISI 4340 chromium electroplated steel. The shot peening pre-treatment was efficient in reducing fatigue loss in the alternatives studied.
dc.languageeng
dc.publisherBlackwell Publishing
dc.relationFatigue & Fracture of Engineering Materials & Structures
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectAISI 4340
dc.subjectfatigue
dc.subjecthard chromium
dc.subjectnickel
dc.subjectshot peening
dc.titleResidual stress influence on fatigue lifetimes of electroplated AISI 4340 high strength steel
dc.typeOtro


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