Fatigue Performance of AISI 4340 Steel Ni-Cr-B-Si-Fe HVOF Thermal Spray Coated

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dc.contributor.authorVieira, L. F S
dc.contributor.authorVoorwald, H. J C [UNESP]
dc.contributor.authorCioffi, M. O H [UNESP]
dc.contributor.institutionMaterials and Technology Department, Fatigue and Aeronautic Materials Research Group
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T16:39:49Z
dc.date.available2018-12-11T16:39:49Z
dc.date.issued2015-01-01
dc.description.abstractCoatings are deposited on high strength materials to improve the surface degradation resistance of several elements. As a consequence, the fatigue strength of coated materials is significantly influenced by internal residual stresses. Despite the fact that hard chromium electroplated is used to guarantee combinations of adhesion, hardness, corrosion and wear resistance, the method decreases the fatigue resistance of aeronautical components due to the high tensile residual stresses and microcracks density contained in the coating. In order to avoid this problem thermally sprayed HVOF coatings and shot peening process are widely used to improve surface properties of several alloys. The aim of the present study is to analyze the influence of Ni-Cr-B-Si-Fe coating applied by HVOF process on the axial fatigue strength of AISI 4340 steel. The shot peening effect on the fatigue results of coated AISI 4340 steel was also evaluated. The fractured fatigue specimens were investigated using a scanning electron microscope in order to obtain information about the crack initiation points.en
dc.description.affiliationMaterials and Technology Department, Fatigue and Aeronautic Materials Research Group, Av. Ariberto Pereira da Cunha, 333
dc.description.affiliationFaculdade de Engenharia de Guaratinguetá, UNESP-Universidade Estadual Paulista
dc.description.affiliationUnespFaculdade de Engenharia de Guaratinguetá, UNESP-Universidade Estadual Paulista
dc.format.extent606-612
dc.identifierhttp://dx.doi.org/10.1016/j.proeng.2015.08.111
dc.identifier.citationProcedia Engineering, v. 114, p. 606-612.
dc.identifier.doi10.1016/j.proeng.2015.08.111
dc.identifier.issn1877-7058
dc.identifier.scopus2-s2.0-84946056859
dc.identifier.urihttp://hdl.handle.net/11449/168117
dc.language.isoeng
dc.relation.ispartofProcedia Engineering
dc.relation.ispartofsjr0,282
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAISI 4340 steel
dc.subjectfatigue
dc.subjectresidual stresses
dc.subjectshot peening
dc.subjectThermal spray coating
dc.titleFatigue Performance of AISI 4340 Steel Ni-Cr-B-Si-Fe HVOF Thermal Spray Coateden
dc.typeTrabalho apresentado em evento

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