Fatigue Crack Growth in Maraging Steel Obtained by Selective Laser Melting

Detalhes bibliográficos
Autor(a) principal: Antunes, Fernando
Data de Publicação: 2019
Outros Autores: Santos, Luís, Capela, Carlos, Ferreira, José A. M., Costa, José, Jesus, Joel de, Prates, Pedro
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10316/106816
https://doi.org/10.3390/app9204412
Resumo: Selective Laser Melting (SLM) is an additive manufacturing technology, ideal for the production of complex-shaped components. Design against fatigue is fundamental in the presence of cyclic loads, particularly for these materials which typically have significant porosity, high surface roughness and residual stresses. The main objective here is to study fatigue crack growth (FCG) in the 18Ni300 steel obtained by SLM. Typical da/dN-DK curves were obtained in C(T) specimens, indicating that cyclic plastic deformation may be the controlling mechanism. A complementary analysis, based on plastic CTOD range, showed a relatively low level of crack tip plastic deformation, and consequently a reduced level of plasticity induced crack closure. The curve da/dN versus plastic CTOD range is clearly above the curves for other materials.
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spelling Fatigue Crack Growth in Maraging Steel Obtained by Selective Laser Meltingfatigue crack growthSelective Laser Melting (SLM)Crack tip Opening Displacement (CTOD)crack tip plastic deformationDKSelective Laser Melting (SLM) is an additive manufacturing technology, ideal for the production of complex-shaped components. Design against fatigue is fundamental in the presence of cyclic loads, particularly for these materials which typically have significant porosity, high surface roughness and residual stresses. The main objective here is to study fatigue crack growth (FCG) in the 18Ni300 steel obtained by SLM. Typical da/dN-DK curves were obtained in C(T) specimens, indicating that cyclic plastic deformation may be the controlling mechanism. A complementary analysis, based on plastic CTOD range, showed a relatively low level of crack tip plastic deformation, and consequently a reduced level of plasticity induced crack closure. The curve da/dN versus plastic CTOD range is clearly above the curves for other materials.MDPI2019info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/106816http://hdl.handle.net/10316/106816https://doi.org/10.3390/app9204412eng2076-3417Antunes, FernandoSantos, LuísCapela, CarlosFerreira, José A. M.Costa, JoséJesus, Joel dePrates, Pedroinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-04-24T11:05:48Zoai:estudogeral.uc.pt:10316/106816Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:23:12.914480Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Fatigue Crack Growth in Maraging Steel Obtained by Selective Laser Melting
title Fatigue Crack Growth in Maraging Steel Obtained by Selective Laser Melting
spellingShingle Fatigue Crack Growth in Maraging Steel Obtained by Selective Laser Melting
Antunes, Fernando
fatigue crack growth
Selective Laser Melting (SLM)
Crack tip Opening Displacement (CTOD)
crack tip plastic deformation
DK
title_short Fatigue Crack Growth in Maraging Steel Obtained by Selective Laser Melting
title_full Fatigue Crack Growth in Maraging Steel Obtained by Selective Laser Melting
title_fullStr Fatigue Crack Growth in Maraging Steel Obtained by Selective Laser Melting
title_full_unstemmed Fatigue Crack Growth in Maraging Steel Obtained by Selective Laser Melting
title_sort Fatigue Crack Growth in Maraging Steel Obtained by Selective Laser Melting
author Antunes, Fernando
author_facet Antunes, Fernando
Santos, Luís
Capela, Carlos
Ferreira, José A. M.
Costa, José
Jesus, Joel de
Prates, Pedro
author_role author
author2 Santos, Luís
Capela, Carlos
Ferreira, José A. M.
Costa, José
Jesus, Joel de
Prates, Pedro
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Antunes, Fernando
Santos, Luís
Capela, Carlos
Ferreira, José A. M.
Costa, José
Jesus, Joel de
Prates, Pedro
dc.subject.por.fl_str_mv fatigue crack growth
Selective Laser Melting (SLM)
Crack tip Opening Displacement (CTOD)
crack tip plastic deformation
DK
topic fatigue crack growth
Selective Laser Melting (SLM)
Crack tip Opening Displacement (CTOD)
crack tip plastic deformation
DK
description Selective Laser Melting (SLM) is an additive manufacturing technology, ideal for the production of complex-shaped components. Design against fatigue is fundamental in the presence of cyclic loads, particularly for these materials which typically have significant porosity, high surface roughness and residual stresses. The main objective here is to study fatigue crack growth (FCG) in the 18Ni300 steel obtained by SLM. Typical da/dN-DK curves were obtained in C(T) specimens, indicating that cyclic plastic deformation may be the controlling mechanism. A complementary analysis, based on plastic CTOD range, showed a relatively low level of crack tip plastic deformation, and consequently a reduced level of plasticity induced crack closure. The curve da/dN versus plastic CTOD range is clearly above the curves for other materials.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10316/106816
http://hdl.handle.net/10316/106816
https://doi.org/10.3390/app9204412
url http://hdl.handle.net/10316/106816
https://doi.org/10.3390/app9204412
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2076-3417
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dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
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instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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