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

Bibliographic Details
Main Author: Vieira, L. F S
Publication Date: 2015
Other Authors: Voorwald, H. J C [UNESP], Cioffi, M. O H [UNESP]
Format: Conference object
Language: eng
Source: Repositório Institucional da UNESP
Download full: http://dx.doi.org/10.1016/j.proeng.2015.08.111
http://hdl.handle.net/11449/168117
Summary: Coatings 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.
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spelling Fatigue Performance of AISI 4340 Steel Ni-Cr-B-Si-Fe HVOF Thermal Spray CoatedAISI 4340 steelfatigueresidual stressesshot peeningThermal spray coatingCoatings 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.Materials and Technology Department, Fatigue and Aeronautic Materials Research Group, Av. Ariberto Pereira da Cunha, 333Faculdade de Engenharia de Guaratinguetá, UNESP-Universidade Estadual PaulistaFaculdade de Engenharia de Guaratinguetá, UNESP-Universidade Estadual PaulistaMaterials and Technology Department, Fatigue and Aeronautic Materials Research GroupUniversidade Estadual Paulista (Unesp)Vieira, L. F SVoorwald, H. J C [UNESP]Cioffi, M. O H [UNESP]2018-12-11T16:39:49Z2018-12-11T16:39:49Z2015-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject606-612http://dx.doi.org/10.1016/j.proeng.2015.08.111Procedia Engineering, v. 114, p. 606-612.1877-7058http://hdl.handle.net/11449/16811710.1016/j.proeng.2015.08.1112-s2.0-84946056859Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengProcedia Engineering0,282info:eu-repo/semantics/openAccess2021-10-23T21:44:18Zoai:repositorio.unesp.br:11449/168117Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T21:44:18Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Fatigue Performance of AISI 4340 Steel Ni-Cr-B-Si-Fe HVOF Thermal Spray Coated
title Fatigue Performance of AISI 4340 Steel Ni-Cr-B-Si-Fe HVOF Thermal Spray Coated
spellingShingle Fatigue Performance of AISI 4340 Steel Ni-Cr-B-Si-Fe HVOF Thermal Spray Coated
Vieira, L. F S
AISI 4340 steel
fatigue
residual stresses
shot peening
Thermal spray coating
title_short Fatigue Performance of AISI 4340 Steel Ni-Cr-B-Si-Fe HVOF Thermal Spray Coated
title_full Fatigue Performance of AISI 4340 Steel Ni-Cr-B-Si-Fe HVOF Thermal Spray Coated
title_fullStr Fatigue Performance of AISI 4340 Steel Ni-Cr-B-Si-Fe HVOF Thermal Spray Coated
title_full_unstemmed Fatigue Performance of AISI 4340 Steel Ni-Cr-B-Si-Fe HVOF Thermal Spray Coated
title_sort Fatigue Performance of AISI 4340 Steel Ni-Cr-B-Si-Fe HVOF Thermal Spray Coated
author Vieira, L. F S
author_facet Vieira, L. F S
Voorwald, H. J C [UNESP]
Cioffi, M. O H [UNESP]
author_role author
author2 Voorwald, H. J C [UNESP]
Cioffi, M. O H [UNESP]
author2_role author
author
dc.contributor.none.fl_str_mv Materials and Technology Department, Fatigue and Aeronautic Materials Research Group
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Vieira, L. F S
Voorwald, H. J C [UNESP]
Cioffi, M. O H [UNESP]
dc.subject.por.fl_str_mv AISI 4340 steel
fatigue
residual stresses
shot peening
Thermal spray coating
topic AISI 4340 steel
fatigue
residual stresses
shot peening
Thermal spray coating
description Coatings 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.
publishDate 2015
dc.date.none.fl_str_mv 2015-01-01
2018-12-11T16:39:49Z
2018-12-11T16:39:49Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/conferenceObject
format conferenceObject
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1016/j.proeng.2015.08.111
Procedia Engineering, v. 114, p. 606-612.
1877-7058
http://hdl.handle.net/11449/168117
10.1016/j.proeng.2015.08.111
2-s2.0-84946056859
url http://dx.doi.org/10.1016/j.proeng.2015.08.111
http://hdl.handle.net/11449/168117
identifier_str_mv Procedia Engineering, v. 114, p. 606-612.
1877-7058
10.1016/j.proeng.2015.08.111
2-s2.0-84946056859
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Procedia Engineering
0,282
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 606-612
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1799965550811545600

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