A Comparative Study of Abbreviated Heat Treatments for SAE 4130 Steel After Laser Welding
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 conve...
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2020-07-01
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| Series: | Materials Research |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392020000400205&tlng=en |
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| author | Raquel Alvim de Figueiredo Mansur Caroline Cristine de Andrade Ferreira Isabela Atílio Sheila Medeiros de Carvalho Vagner Braga Rafael Humberto de Mota Siqueira Milton Sergio Fernandes de Lima |
| author_facet | Raquel Alvim de Figueiredo Mansur Caroline Cristine de Andrade Ferreira Isabela Atílio Sheila Medeiros de Carvalho Vagner Braga Rafael Humberto de Mota Siqueira Milton Sergio Fernandes de Lima |
| author_sort | Raquel Alvim de Figueiredo Mansur |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-04-11T17:16:34Z |
| format | Article |
| id | doaj.art-0b76a910d02649f786a3d7f3a17d527e |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-04-11T17:16:34Z |
| publishDate | 2020-07-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj.art-0b76a910d02649f786a3d7f3a17d527e2022-12-22T04:12:37ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392020-07-0123410.1590/1980-5373-mr-2020-0162A Comparative Study of Abbreviated Heat Treatments for SAE 4130 Steel After Laser WeldingRaquel Alvim de Figueiredo MansurCaroline Cristine de Andrade FerreiraIsabela Atíliohttps://orcid.org/0000-0002-9443-543XSheila Medeiros de CarvalhoVagner BragaRafael Humberto de Mota SiqueiraMilton Sergio Fernandes de Limahttps://orcid.org/0000-0001-5540-8802Abstract 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392020000400205&tlng=enLaser beam weldingSAE 4130 steelheat treatmenthardening |
| spellingShingle | Raquel Alvim de Figueiredo Mansur Caroline Cristine de Andrade Ferreira Isabela Atílio Sheila Medeiros de Carvalho Vagner Braga Rafael Humberto de Mota Siqueira Milton Sergio Fernandes de Lima A Comparative Study of Abbreviated Heat Treatments for SAE 4130 Steel After Laser Welding Materials Research Laser beam welding SAE 4130 steel heat treatment hardening |
| title | 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_short | A Comparative Study of Abbreviated Heat Treatments for SAE 4130 Steel After Laser Welding |
| title_sort | comparative study of abbreviated heat treatments for sae 4130 steel after laser welding |
| topic | Laser beam welding SAE 4130 steel heat treatment hardening |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392020000400205&tlng=en |
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