Failure Prediction of AISI 420 Martensitic Stainless Steel Using the Theory of Critical Distances
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Materials research (São Carlos. Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392020000600226 |
Resumo: | This work aims to evaluate the capability of the theory of critical distances (TCD) to predict the static failure of U-notched AISI 420 martensitic stainless steel specimens with different geometric features under pure bending loading. Theoretical estimates of the stress intensity factor during fracture onset were calculated according to the line (LM) and point methods (PM), which consider the characteristic length L, inherent strength σ0, and notch tip radius ρ. Initially, L and σ0 were determined on the basis of the material’s properties (i.e., fracture toughness KIc and ultimate tensile strength σu,t), resulting in imprecise estimates. Conversely, L and σ0 determined using the appropriate analysis of linear–elastic stress fields ahead of notches with different sharpness provided highly accurate predictions. The microscopic study of fractured specimens ensured better comprehension of the results. Moreover, the accurate values of L and σ0 were used to predict the failure of V-notched specimens. |
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Failure Prediction of AISI 420 Martensitic Stainless Steel Using the Theory of Critical DistancesTheory of critical distancesAISI 420U-notchV-notchSmall-scale yieldingThis work aims to evaluate the capability of the theory of critical distances (TCD) to predict the static failure of U-notched AISI 420 martensitic stainless steel specimens with different geometric features under pure bending loading. Theoretical estimates of the stress intensity factor during fracture onset were calculated according to the line (LM) and point methods (PM), which consider the characteristic length L, inherent strength σ0, and notch tip radius ρ. Initially, L and σ0 were determined on the basis of the material’s properties (i.e., fracture toughness KIc and ultimate tensile strength σu,t), resulting in imprecise estimates. Conversely, L and σ0 determined using the appropriate analysis of linear–elastic stress fields ahead of notches with different sharpness provided highly accurate predictions. The microscopic study of fractured specimens ensured better comprehension of the results. Moreover, the accurate values of L and σ0 were used to predict the failure of V-notched specimens.ABM, ABC, ABPol2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392020000600226Materials Research v.23 n.6 2020reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-mr-2020-0494info:eu-repo/semantics/openAccessSiqueira,Marcelo de OliveiraCarvalho,Eduardo Atem deeng2021-02-22T00:00:00Zoai:scielo:S1516-14392020000600226Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2021-02-22T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.none.fl_str_mv |
Failure Prediction of AISI 420 Martensitic Stainless Steel Using the Theory of Critical Distances |
title |
Failure Prediction of AISI 420 Martensitic Stainless Steel Using the Theory of Critical Distances |
spellingShingle |
Failure Prediction of AISI 420 Martensitic Stainless Steel Using the Theory of Critical Distances Siqueira,Marcelo de Oliveira Theory of critical distances AISI 420 U-notch V-notch Small-scale yielding |
title_short |
Failure Prediction of AISI 420 Martensitic Stainless Steel Using the Theory of Critical Distances |
title_full |
Failure Prediction of AISI 420 Martensitic Stainless Steel Using the Theory of Critical Distances |
title_fullStr |
Failure Prediction of AISI 420 Martensitic Stainless Steel Using the Theory of Critical Distances |
title_full_unstemmed |
Failure Prediction of AISI 420 Martensitic Stainless Steel Using the Theory of Critical Distances |
title_sort |
Failure Prediction of AISI 420 Martensitic Stainless Steel Using the Theory of Critical Distances |
author |
Siqueira,Marcelo de Oliveira |
author_facet |
Siqueira,Marcelo de Oliveira Carvalho,Eduardo Atem de |
author_role |
author |
author2 |
Carvalho,Eduardo Atem de |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Siqueira,Marcelo de Oliveira Carvalho,Eduardo Atem de |
dc.subject.por.fl_str_mv |
Theory of critical distances AISI 420 U-notch V-notch Small-scale yielding |
topic |
Theory of critical distances AISI 420 U-notch V-notch Small-scale yielding |
description |
This work aims to evaluate the capability of the theory of critical distances (TCD) to predict the static failure of U-notched AISI 420 martensitic stainless steel specimens with different geometric features under pure bending loading. Theoretical estimates of the stress intensity factor during fracture onset were calculated according to the line (LM) and point methods (PM), which consider the characteristic length L, inherent strength σ0, and notch tip radius ρ. Initially, L and σ0 were determined on the basis of the material’s properties (i.e., fracture toughness KIc and ultimate tensile strength σu,t), resulting in imprecise estimates. Conversely, L and σ0 determined using the appropriate analysis of linear–elastic stress fields ahead of notches with different sharpness provided highly accurate predictions. The microscopic study of fractured specimens ensured better comprehension of the results. Moreover, the accurate values of L and σ0 were used to predict the failure of V-notched specimens. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392020000600226 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392020000600226 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1980-5373-mr-2020-0494 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
ABM, ABC, ABPol |
publisher.none.fl_str_mv |
ABM, ABC, ABPol |
dc.source.none.fl_str_mv |
Materials Research v.23 n.6 2020 reponame:Materials research (São Carlos. Online) instname:Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL |
instname_str |
Universidade Federal de São Carlos (UFSCAR) |
instacron_str |
ABM ABC ABPOL |
institution |
ABM ABC ABPOL |
reponame_str |
Materials research (São Carlos. Online) |
collection |
Materials research (São Carlos. Online) |
repository.name.fl_str_mv |
Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR) |
repository.mail.fl_str_mv |
dedz@power.ufscar.br |
_version_ |
1754212678054707200 |