Microstructural Evolution Due to One Thermal Cycle in a Superduplex Stainless Steel ASTM A890/A890M - Grade 6A in the As-Weld and Post-Weld Heat Treatment Conditions
During welding of the superduplex stainless steels are exposed to thermal cycles, allowing precipitation of deleterious phases as well as unbalance as the ferrite and austenite phases. This work analyzed the microstructural changes taking place on a plate ASTM A890/A890M - grade 6A steel submitted t...
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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)
2019-08-01
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| Series: | Materials Research |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392019000400215&tlng=en |
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| author | Clélia Ribeiro de Oliveira Eloá Lopes Maia Solange Tamara da Fonseca Marcelo Martins Julian Arnaldo Avila Paulo Roberto Mei |
| author_facet | Clélia Ribeiro de Oliveira Eloá Lopes Maia Solange Tamara da Fonseca Marcelo Martins Julian Arnaldo Avila Paulo Roberto Mei |
| author_sort | Clélia Ribeiro de Oliveira |
| collection | DOAJ |
| description | During welding of the superduplex stainless steels are exposed to thermal cycles, allowing precipitation of deleterious phases as well as unbalance as the ferrite and austenite phases. This work analyzed the microstructural changes taking place on a plate ASTM A890/A890M - grade 6A steel submitted to arc welding one welding of pass conducted on a flat surface using coated electrode Zeron®100, in the as welded and post-welded heat treatment conditions. Microstructural characterization in the regions base metal, heat affected zone, and fusion zone were conducted by optical microscopy, scanning electron microscopy and X-ray diffraction. The post-weld heat treatment in the fusion zone changed the ferrite/austenite volumetric fraction from 59/41 to 52/48. Cr, Mo and Ni distributions in the fusion zone were altered after the post-weld heat treatment, with the concentration ratio ferrite/austenite being around 1.0; 1.1 and 0.9 to 1.1; 1.4 and 0.7, respectively. In addition, hardness reduced from 300 to 270 HV0.3 at the fusion zone. |
| first_indexed | 2024-12-24T01:55:43Z |
| format | Article |
| id | doaj.art-aae4f07e4950420897284e789bce02c0 |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-12-24T01:55:43Z |
| publishDate | 2019-08-01 |
| 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-aae4f07e4950420897284e789bce02c02022-12-21T17:21:35ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392019-08-0122410.1590/1980-5373-mr-2019-0320Microstructural Evolution Due to One Thermal Cycle in a Superduplex Stainless Steel ASTM A890/A890M - Grade 6A in the As-Weld and Post-Weld Heat Treatment ConditionsClélia Ribeiro de Oliveirahttps://orcid.org/0000-0003-4390-3624Eloá Lopes MaiaSolange Tamara da FonsecaMarcelo MartinsJulian Arnaldo AvilaPaulo Roberto MeiDuring welding of the superduplex stainless steels are exposed to thermal cycles, allowing precipitation of deleterious phases as well as unbalance as the ferrite and austenite phases. This work analyzed the microstructural changes taking place on a plate ASTM A890/A890M - grade 6A steel submitted to arc welding one welding of pass conducted on a flat surface using coated electrode Zeron®100, in the as welded and post-welded heat treatment conditions. Microstructural characterization in the regions base metal, heat affected zone, and fusion zone were conducted by optical microscopy, scanning electron microscopy and X-ray diffraction. The post-weld heat treatment in the fusion zone changed the ferrite/austenite volumetric fraction from 59/41 to 52/48. Cr, Mo and Ni distributions in the fusion zone were altered after the post-weld heat treatment, with the concentration ratio ferrite/austenite being around 1.0; 1.1 and 0.9 to 1.1; 1.4 and 0.7, respectively. In addition, hardness reduced from 300 to 270 HV0.3 at the fusion zone.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392019000400215&tlng=ensuperduplex stainless steelASTM A890/A890Mpost-weld heat treatment |
| spellingShingle | Clélia Ribeiro de Oliveira Eloá Lopes Maia Solange Tamara da Fonseca Marcelo Martins Julian Arnaldo Avila Paulo Roberto Mei Microstructural Evolution Due to One Thermal Cycle in a Superduplex Stainless Steel ASTM A890/A890M - Grade 6A in the As-Weld and Post-Weld Heat Treatment Conditions Materials Research superduplex stainless steel ASTM A890/A890M post-weld heat treatment |
| title | Microstructural Evolution Due to One Thermal Cycle in a Superduplex Stainless Steel ASTM A890/A890M - Grade 6A in the As-Weld and Post-Weld Heat Treatment Conditions |
| title_full | Microstructural Evolution Due to One Thermal Cycle in a Superduplex Stainless Steel ASTM A890/A890M - Grade 6A in the As-Weld and Post-Weld Heat Treatment Conditions |
| title_fullStr | Microstructural Evolution Due to One Thermal Cycle in a Superduplex Stainless Steel ASTM A890/A890M - Grade 6A in the As-Weld and Post-Weld Heat Treatment Conditions |
| title_full_unstemmed | Microstructural Evolution Due to One Thermal Cycle in a Superduplex Stainless Steel ASTM A890/A890M - Grade 6A in the As-Weld and Post-Weld Heat Treatment Conditions |
| title_short | Microstructural Evolution Due to One Thermal Cycle in a Superduplex Stainless Steel ASTM A890/A890M - Grade 6A in the As-Weld and Post-Weld Heat Treatment Conditions |
| title_sort | microstructural evolution due to one thermal cycle in a superduplex stainless steel astm a890 a890m grade 6a in the as weld and post weld heat treatment conditions |
| topic | superduplex stainless steel ASTM A890/A890M post-weld heat treatment |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392019000400215&tlng=en |
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