A technical note on the phase transformation in furnace container material after a periodic thermo-chemical treatment
Autor(a) principal: | |
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Data de Publicação: | 2002 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/4284 https://doi.org/10.1016/S0924-0136(02)00045-6 |
Resumo: | The aim of this work is to investigate the metallurgical changes in the wall of cylindrical containers, fabricated by welding from AISI 310 steel, used in the thermal and chemical treatment of spindle chains for the automotive industry, for an in-service period of over 1000 h. In order to identify the phases originated during this in-service period, several etchants were used in the structural study, together with X-ray diffraction and 57Fe Mössbauer spectroscopy analysis. The metallographic technique demonstrates some limitations in the complete identification of the phases produced in the wall of the containers. The structure of the wall of the containers, after the referred to working period, is composed of an austenitic matrix, whose grain size is about 212 and 238 [mu]m, near the internal and external faces of the wall, respectively. These show numerous precipitates inside the grains and at the grain boundaries. The density of the precipitates decreases from the internal to the external surface. The precipitates are nitrides (Cr, Mo)12 (Fe,Ni)8-x N4-z near the internal surface, and carbides (Cr, Fe, Mo)23C6 on the other zones of the wall. |
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A technical note on the phase transformation in furnace container material after a periodic thermo-chemical treatmentAISI 310Phase transformationCarbidesNitridesMössbauerX-ray diffractionThe aim of this work is to investigate the metallurgical changes in the wall of cylindrical containers, fabricated by welding from AISI 310 steel, used in the thermal and chemical treatment of spindle chains for the automotive industry, for an in-service period of over 1000 h. In order to identify the phases originated during this in-service period, several etchants were used in the structural study, together with X-ray diffraction and 57Fe Mössbauer spectroscopy analysis. The metallographic technique demonstrates some limitations in the complete identification of the phases produced in the wall of the containers. The structure of the wall of the containers, after the referred to working period, is composed of an austenitic matrix, whose grain size is about 212 and 238 [mu]m, near the internal and external faces of the wall, respectively. These show numerous precipitates inside the grains and at the grain boundaries. The density of the precipitates decreases from the internal to the external surface. The precipitates are nitrides (Cr, Mo)12 (Fe,Ni)8-x N4-z near the internal surface, and carbides (Cr, Fe, Mo)23C6 on the other zones of the wall.http://www.sciencedirect.com/science/article/B6TGJ-4502Y49-G/1/4e6ae31d16e053b40c961bebbfda1e0a2002info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleaplication/PDFhttp://hdl.handle.net/10316/4284http://hdl.handle.net/10316/4284https://doi.org/10.1016/S0924-0136(02)00045-6engJournal of Materials Processing Technology. 122:2-3 (2002) 363-367Loureiro, A. J. R.Costa, B. F. O.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2020-11-06T16:59:54Zoai:estudogeral.uc.pt:10316/4284Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:58:29.025861Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
A technical note on the phase transformation in furnace container material after a periodic thermo-chemical treatment |
title |
A technical note on the phase transformation in furnace container material after a periodic thermo-chemical treatment |
spellingShingle |
A technical note on the phase transformation in furnace container material after a periodic thermo-chemical treatment Loureiro, A. J. R. AISI 310 Phase transformation Carbides Nitrides Mössbauer X-ray diffraction |
title_short |
A technical note on the phase transformation in furnace container material after a periodic thermo-chemical treatment |
title_full |
A technical note on the phase transformation in furnace container material after a periodic thermo-chemical treatment |
title_fullStr |
A technical note on the phase transformation in furnace container material after a periodic thermo-chemical treatment |
title_full_unstemmed |
A technical note on the phase transformation in furnace container material after a periodic thermo-chemical treatment |
title_sort |
A technical note on the phase transformation in furnace container material after a periodic thermo-chemical treatment |
author |
Loureiro, A. J. R. |
author_facet |
Loureiro, A. J. R. Costa, B. F. O. |
author_role |
author |
author2 |
Costa, B. F. O. |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Loureiro, A. J. R. Costa, B. F. O. |
dc.subject.por.fl_str_mv |
AISI 310 Phase transformation Carbides Nitrides Mössbauer X-ray diffraction |
topic |
AISI 310 Phase transformation Carbides Nitrides Mössbauer X-ray diffraction |
description |
The aim of this work is to investigate the metallurgical changes in the wall of cylindrical containers, fabricated by welding from AISI 310 steel, used in the thermal and chemical treatment of spindle chains for the automotive industry, for an in-service period of over 1000 h. In order to identify the phases originated during this in-service period, several etchants were used in the structural study, together with X-ray diffraction and 57Fe Mössbauer spectroscopy analysis. The metallographic technique demonstrates some limitations in the complete identification of the phases produced in the wall of the containers. The structure of the wall of the containers, after the referred to working period, is composed of an austenitic matrix, whose grain size is about 212 and 238 [mu]m, near the internal and external faces of the wall, respectively. These show numerous precipitates inside the grains and at the grain boundaries. The density of the precipitates decreases from the internal to the external surface. The precipitates are nitrides (Cr, Mo)12 (Fe,Ni)8-x N4-z near the internal surface, and carbides (Cr, Fe, Mo)23C6 on the other zones of the wall. |
publishDate |
2002 |
dc.date.none.fl_str_mv |
2002 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10316/4284 http://hdl.handle.net/10316/4284 https://doi.org/10.1016/S0924-0136(02)00045-6 |
url |
http://hdl.handle.net/10316/4284 https://doi.org/10.1016/S0924-0136(02)00045-6 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Materials Processing Technology. 122:2-3 (2002) 363-367 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
aplication/PDF |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799133875897630720 |