Microstructural Transformation in a Root Pass of Superduplex Stainless Steel Multipass Welding
The microstructure of the root pass in a superduplex stainless steel multipass welding was investigated.Results showed that the welding metal has an austenite matrix with particles of sigma phase formed in the ferrite/austenite interface and intragranularly.Eventhough the filler metal is intended to...
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| Format: | Article |
| Language: | English |
| Published: |
Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2017-02-01
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| Series: | Materials Research |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000200303&tlng=en |
| _version_ | 1818744449376714752 |
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| author | Doris Ivette Villalobos-Vera Ivan Mendoza-Bravo |
| author_facet | Doris Ivette Villalobos-Vera Ivan Mendoza-Bravo |
| author_sort | Doris Ivette Villalobos-Vera |
| collection | DOAJ |
| description | The microstructure of the root pass in a superduplex stainless steel multipass welding was investigated.Results showed that the welding metal has an austenite matrix with particles of sigma phase formed in the ferrite/austenite interface and intragranularly.Eventhough the filler metal is intended to keep the phase balance after welding,the welding metal presented a considerable decrease in the ferrite content and a high proportion of sigma phase. Despite the exposition to thermal cycles on every pass, the heat affected zone presented a microstructure consisting of ferrite and austenite with a small proportion of sigma phase.Therefore,the thermal cycles of every welding pass allowed the decomposition of ferrite into austenite and sigma phase in points close to the heat source, changing the final microstructure. |
| first_indexed | 2024-12-18T02:44:29Z |
| format | Article |
| id | doaj.art-32b133da3b70406f85322df0394116ba |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-12-18T02:44:29Z |
| publishDate | 2017-02-01 |
| 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-32b133da3b70406f85322df0394116ba2022-12-21T21:23:36ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392017-02-0120230330710.1590/1980-5373-mr-2016-0506Microstructural Transformation in a Root Pass of Superduplex Stainless Steel Multipass WeldingDoris Ivette Villalobos-VeraIvan Mendoza-BravoThe microstructure of the root pass in a superduplex stainless steel multipass welding was investigated.Results showed that the welding metal has an austenite matrix with particles of sigma phase formed in the ferrite/austenite interface and intragranularly.Eventhough the filler metal is intended to keep the phase balance after welding,the welding metal presented a considerable decrease in the ferrite content and a high proportion of sigma phase. Despite the exposition to thermal cycles on every pass, the heat affected zone presented a microstructure consisting of ferrite and austenite with a small proportion of sigma phase.Therefore,the thermal cycles of every welding pass allowed the decomposition of ferrite into austenite and sigma phase in points close to the heat source, changing the final microstructure.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000200303&tlng=enduplex stainless steelthermal cyclessigma phasemultipass welding |
| spellingShingle | Doris Ivette Villalobos-Vera Ivan Mendoza-Bravo Microstructural Transformation in a Root Pass of Superduplex Stainless Steel Multipass Welding Materials Research duplex stainless steel thermal cycles sigma phase multipass welding |
| title | Microstructural Transformation in a Root Pass of Superduplex Stainless Steel Multipass Welding |
| title_full | Microstructural Transformation in a Root Pass of Superduplex Stainless Steel Multipass Welding |
| title_fullStr | Microstructural Transformation in a Root Pass of Superduplex Stainless Steel Multipass Welding |
| title_full_unstemmed | Microstructural Transformation in a Root Pass of Superduplex Stainless Steel Multipass Welding |
| title_short | Microstructural Transformation in a Root Pass of Superduplex Stainless Steel Multipass Welding |
| title_sort | microstructural transformation in a root pass of superduplex stainless steel multipass welding |
| topic | duplex stainless steel thermal cycles sigma phase multipass welding |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000200303&tlng=en |
| work_keys_str_mv | AT dorisivettevillalobosvera microstructuraltransformationinarootpassofsuperduplexstainlesssteelmultipasswelding AT ivanmendozabravo microstructuraltransformationinarootpassofsuperduplexstainlesssteelmultipasswelding |