A Comparative Study of Abbreviated Heat Treatments for SAE 4130 Steel After Laser Welding
Main Author: | |
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Publication Date: | 2020 |
Other Authors: | , , , , , |
Format: | Article |
Language: | eng |
Source: | Materials research (São Carlos. Online) |
Download full: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392020000400205 |
Summary: | Abstract It was verified that SAE 4130 steel plates crack when laser beam welded at room temperature (RT). To overcome this problem, this work proposes a high temperature (HT) laser welding in order to reduce the residual stresses and create a bainitic structure instead of a martensitic one. A conventional post-welding heat treatment (PWHT) had been used as a comparison for HT. The centerline crack disappeared after a heat treatment of both in-situ (HT) or after inserting in a furnace (PWHT) at 500 °C for 10 minutes. The finite element analyses indicated a residual stress reduction from 163.70 to 3.72 MPa in the fusion zone (FZ) of the welds from RT to HT. The hardness obtained in FZ depends on the thermal cycle induced microstructure of the welds as 400 HV, 340 HV and 250 HV, for martensite (RT), tempered martensite (PWHT) and bainite (HT) micro-constituents. The proposed in-situ high-temperature laser beam welding method proved its usefulness to solve the center crack issue in SAE 4130 joints. |
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A Comparative Study of Abbreviated Heat Treatments for SAE 4130 Steel After Laser WeldingLaser beam weldingSAE 4130 steelheat treatmenthardeningAbstract It was verified that SAE 4130 steel plates crack when laser beam welded at room temperature (RT). To overcome this problem, this work proposes a high temperature (HT) laser welding in order to reduce the residual stresses and create a bainitic structure instead of a martensitic one. A conventional post-welding heat treatment (PWHT) had been used as a comparison for HT. The centerline crack disappeared after a heat treatment of both in-situ (HT) or after inserting in a furnace (PWHT) at 500 °C for 10 minutes. The finite element analyses indicated a residual stress reduction from 163.70 to 3.72 MPa in the fusion zone (FZ) of the welds from RT to HT. The hardness obtained in FZ depends on the thermal cycle induced microstructure of the welds as 400 HV, 340 HV and 250 HV, for martensite (RT), tempered martensite (PWHT) and bainite (HT) micro-constituents. The proposed in-situ high-temperature laser beam welding method proved its usefulness to solve the center crack issue in SAE 4130 joints.ABM, ABC, ABPol2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392020000400205Materials Research v.23 n.4 2020reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-mr-2020-0162info:eu-repo/semantics/openAccessMansur,Raquel Alvim de FigueiredoFerreira,Caroline Cristine de AndradeAtílio,IsabelaCarvalho,Sheila Medeiros deBraga,VagnerSiqueira,Rafael Humberto de MotaLima,Milton Sergio Fernandes deeng2020-07-22T00:00:00Zoai:scielo:S1516-14392020000400205Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2020-07-22T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.none.fl_str_mv |
A Comparative Study of Abbreviated Heat Treatments for SAE 4130 Steel After Laser Welding |
title |
A Comparative Study of Abbreviated Heat Treatments for SAE 4130 Steel After Laser Welding |
spellingShingle |
A Comparative Study of Abbreviated Heat Treatments for SAE 4130 Steel After Laser Welding Mansur,Raquel Alvim de Figueiredo Laser beam welding SAE 4130 steel heat treatment hardening |
title_short |
A Comparative Study of Abbreviated Heat Treatments for SAE 4130 Steel After Laser Welding |
title_full |
A Comparative Study of Abbreviated Heat Treatments for SAE 4130 Steel After Laser Welding |
title_fullStr |
A Comparative Study of Abbreviated Heat Treatments for SAE 4130 Steel After Laser Welding |
title_full_unstemmed |
A Comparative Study of Abbreviated Heat Treatments for SAE 4130 Steel After Laser Welding |
title_sort |
A Comparative Study of Abbreviated Heat Treatments for SAE 4130 Steel After Laser Welding |
author |
Mansur,Raquel Alvim de Figueiredo |
author_facet |
Mansur,Raquel Alvim de Figueiredo Ferreira,Caroline Cristine de Andrade Atílio,Isabela Carvalho,Sheila Medeiros de Braga,Vagner Siqueira,Rafael Humberto de Mota Lima,Milton Sergio Fernandes de |
author_role |
author |
author2 |
Ferreira,Caroline Cristine de Andrade Atílio,Isabela Carvalho,Sheila Medeiros de Braga,Vagner Siqueira,Rafael Humberto de Mota Lima,Milton Sergio Fernandes de |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Mansur,Raquel Alvim de Figueiredo Ferreira,Caroline Cristine de Andrade Atílio,Isabela Carvalho,Sheila Medeiros de Braga,Vagner Siqueira,Rafael Humberto de Mota Lima,Milton Sergio Fernandes de |
dc.subject.por.fl_str_mv |
Laser beam welding SAE 4130 steel heat treatment hardening |
topic |
Laser beam welding SAE 4130 steel heat treatment hardening |
description |
Abstract It was verified that SAE 4130 steel plates crack when laser beam welded at room temperature (RT). To overcome this problem, this work proposes a high temperature (HT) laser welding in order to reduce the residual stresses and create a bainitic structure instead of a martensitic one. A conventional post-welding heat treatment (PWHT) had been used as a comparison for HT. The centerline crack disappeared after a heat treatment of both in-situ (HT) or after inserting in a furnace (PWHT) at 500 °C for 10 minutes. The finite element analyses indicated a residual stress reduction from 163.70 to 3.72 MPa in the fusion zone (FZ) of the welds from RT to HT. The hardness obtained in FZ depends on the thermal cycle induced microstructure of the welds as 400 HV, 340 HV and 250 HV, for martensite (RT), tempered martensite (PWHT) and bainite (HT) micro-constituents. The proposed in-situ high-temperature laser beam welding method proved its usefulness to solve the center crack issue in SAE 4130 joints. |
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=S1516-14392020000400205 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392020000400205 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1980-5373-mr-2020-0162 |
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.4 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_ |
1754212677354258432 |