Effects of Heat Input and Niobium Addition on HAZ of Microalloyed Steels for Reinforcing Bars

Detalhes bibliográficos
Autor(a) principal: Prado,Juscelino Mendes
Data de Publicação: 2020
Outros Autores: Lino,Roney Eduardo, Vaz,Cláudio Turani
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista soldagem & inspeção (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-92242020000100222
Resumo: Abstract: Niobium or vanadium addition provides homogeneous microstructures formation, strengthening and toughness improvement in steels. However, alloying elements increase can negatively affect Pcm (material parameter) value, which can lead to deleterious effects under welding conditions. Thus, welding trials were carried out on a novel microalloyed steel with 0.2%C by autogenous GTAW (Gas-Shielded Tungsten Arc Welding) process. The results indicate that coarse grains region of heat affected zone (CGHAZ) is the most critical area. This was due abnormal grains size (>100µm), achieving more than 4 times the average size of base metal (BM) grains, or the presence of high hardness microstructures. In addition, the results do not indicate softness in any region of HAZ, proving to be an advantage of these materials.
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spelling Effects of Heat Input and Niobium Addition on HAZ of Microalloyed Steels for Reinforcing BarsWeldingMicroalloyed steelsHAZHeat inputAbstract: Niobium or vanadium addition provides homogeneous microstructures formation, strengthening and toughness improvement in steels. However, alloying elements increase can negatively affect Pcm (material parameter) value, which can lead to deleterious effects under welding conditions. Thus, welding trials were carried out on a novel microalloyed steel with 0.2%C by autogenous GTAW (Gas-Shielded Tungsten Arc Welding) process. The results indicate that coarse grains region of heat affected zone (CGHAZ) is the most critical area. This was due abnormal grains size (>100µm), achieving more than 4 times the average size of base metal (BM) grains, or the presence of high hardness microstructures. In addition, the results do not indicate softness in any region of HAZ, proving to be an advantage of these materials.Associação Brasileira de Soldagem2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-92242020000100222Soldagem & Inspeção v.25 2020reponame:Revista soldagem & inspeção (Online)instname:Associação Brasileira de Soldagem (ABS)instacron:ABS10.1590/0104-9224/si25.31info:eu-repo/semantics/openAccessPrado,Juscelino MendesLino,Roney EduardoVaz,Cláudio Turanieng2020-09-25T00:00:00Zoai:scielo:S0104-92242020000100222Revistahttp://abs-soldagem.org.br/s&i/https://old.scielo.br/oai/scielo-oai.php||revista-si@abs-soldagem.org.br0104-92241980-6973opendoar:2020-09-25T00:00Revista soldagem & inspeção (Online) - Associação Brasileira de Soldagem (ABS)false
dc.title.none.fl_str_mv Effects of Heat Input and Niobium Addition on HAZ of Microalloyed Steels for Reinforcing Bars
title Effects of Heat Input and Niobium Addition on HAZ of Microalloyed Steels for Reinforcing Bars
spellingShingle Effects of Heat Input and Niobium Addition on HAZ of Microalloyed Steels for Reinforcing Bars
Prado,Juscelino Mendes
Welding
Microalloyed steels
HAZ
Heat input
title_short Effects of Heat Input and Niobium Addition on HAZ of Microalloyed Steels for Reinforcing Bars
title_full Effects of Heat Input and Niobium Addition on HAZ of Microalloyed Steels for Reinforcing Bars
title_fullStr Effects of Heat Input and Niobium Addition on HAZ of Microalloyed Steels for Reinforcing Bars
title_full_unstemmed Effects of Heat Input and Niobium Addition on HAZ of Microalloyed Steels for Reinforcing Bars
title_sort Effects of Heat Input and Niobium Addition on HAZ of Microalloyed Steels for Reinforcing Bars
author Prado,Juscelino Mendes
author_facet Prado,Juscelino Mendes
Lino,Roney Eduardo
Vaz,Cláudio Turani
author_role author
author2 Lino,Roney Eduardo
Vaz,Cláudio Turani
author2_role author
author
dc.contributor.author.fl_str_mv Prado,Juscelino Mendes
Lino,Roney Eduardo
Vaz,Cláudio Turani
dc.subject.por.fl_str_mv Welding
Microalloyed steels
HAZ
Heat input
topic Welding
Microalloyed steels
HAZ
Heat input
description Abstract: Niobium or vanadium addition provides homogeneous microstructures formation, strengthening and toughness improvement in steels. However, alloying elements increase can negatively affect Pcm (material parameter) value, which can lead to deleterious effects under welding conditions. Thus, welding trials were carried out on a novel microalloyed steel with 0.2%C by autogenous GTAW (Gas-Shielded Tungsten Arc Welding) process. The results indicate that coarse grains region of heat affected zone (CGHAZ) is the most critical area. This was due abnormal grains size (>100µm), achieving more than 4 times the average size of base metal (BM) grains, or the presence of high hardness microstructures. In addition, the results do not indicate softness in any region of HAZ, proving to be an advantage of these materials.
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=S0104-92242020000100222
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-92242020000100222
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0104-9224/si25.31
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 Associação Brasileira de Soldagem
publisher.none.fl_str_mv Associação Brasileira de Soldagem
dc.source.none.fl_str_mv Soldagem & Inspeção v.25 2020
reponame:Revista soldagem & inspeção (Online)
instname:Associação Brasileira de Soldagem (ABS)
instacron:ABS
instname_str Associação Brasileira de Soldagem (ABS)
instacron_str ABS
institution ABS
reponame_str Revista soldagem & inspeção (Online)
collection Revista soldagem & inspeção (Online)
repository.name.fl_str_mv Revista soldagem & inspeção (Online) - Associação Brasileira de Soldagem (ABS)
repository.mail.fl_str_mv ||revista-si@abs-soldagem.org.br
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