Formation of Gradient Structure in Rails at Long-Term Operation
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Materials research (São Carlos. Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392020000600214 |
Resumo: | Abstract It has been shown by the methods of physical material science that long-term operation of rails is accompanied by the formation of the gradient structural constituents consisting in the regular change in relative content of lamellar pearlite, fractured pearlite and structure of ferrite-carbide mixture in cross-selection of rail head. As the distance to the surface of rails increases the relative content of metal volume with the structure of lamellar pearlite decreases and that with the structure of fractured pearlite and ferrite-carbide mixture increases. It has been established that the characteristic feature of ferrite-carbide mixture structure is a nanodimentional range of grains, subgrains and particles of the carbide phase forming it. The dimension of grains and subgrains forming the given type of structure varies within the limits of 40-70 nm. The size of carbide phase particles located along the boundaries of grains and subgrains varies within the limits of 8-20 nm. |
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Materials research (São Carlos. Online) |
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|
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Formation of Gradient Structure in Rails at Long-Term Operationgradient structuretransmission electron microscopy (TEM)carbidesnanostructured materialspearlitic steelsAbstract It has been shown by the methods of physical material science that long-term operation of rails is accompanied by the formation of the gradient structural constituents consisting in the regular change in relative content of lamellar pearlite, fractured pearlite and structure of ferrite-carbide mixture in cross-selection of rail head. As the distance to the surface of rails increases the relative content of metal volume with the structure of lamellar pearlite decreases and that with the structure of fractured pearlite and ferrite-carbide mixture increases. It has been established that the characteristic feature of ferrite-carbide mixture structure is a nanodimentional range of grains, subgrains and particles of the carbide phase forming it. The dimension of grains and subgrains forming the given type of structure varies within the limits of 40-70 nm. The size of carbide phase particles located along the boundaries of grains and subgrains varies within the limits of 8-20 nm.ABM, ABC, ABPol2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392020000600214Materials Research v.23 n.6 2020reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-mr-2020-0258info:eu-repo/semantics/openAccessYuriev,AntonKormyshev,VasiliyGromov,VictorIvanov,YuriiSemin,Alexandereng2020-11-30T00:00:00Zoai:scielo:S1516-14392020000600214Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2020-11-30T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.none.fl_str_mv |
Formation of Gradient Structure in Rails at Long-Term Operation |
title |
Formation of Gradient Structure in Rails at Long-Term Operation |
spellingShingle |
Formation of Gradient Structure in Rails at Long-Term Operation Yuriev,Anton gradient structure transmission electron microscopy (TEM) carbides nanostructured materials pearlitic steels |
title_short |
Formation of Gradient Structure in Rails at Long-Term Operation |
title_full |
Formation of Gradient Structure in Rails at Long-Term Operation |
title_fullStr |
Formation of Gradient Structure in Rails at Long-Term Operation |
title_full_unstemmed |
Formation of Gradient Structure in Rails at Long-Term Operation |
title_sort |
Formation of Gradient Structure in Rails at Long-Term Operation |
author |
Yuriev,Anton |
author_facet |
Yuriev,Anton Kormyshev,Vasiliy Gromov,Victor Ivanov,Yurii Semin,Alexander |
author_role |
author |
author2 |
Kormyshev,Vasiliy Gromov,Victor Ivanov,Yurii Semin,Alexander |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Yuriev,Anton Kormyshev,Vasiliy Gromov,Victor Ivanov,Yurii Semin,Alexander |
dc.subject.por.fl_str_mv |
gradient structure transmission electron microscopy (TEM) carbides nanostructured materials pearlitic steels |
topic |
gradient structure transmission electron microscopy (TEM) carbides nanostructured materials pearlitic steels |
description |
Abstract It has been shown by the methods of physical material science that long-term operation of rails is accompanied by the formation of the gradient structural constituents consisting in the regular change in relative content of lamellar pearlite, fractured pearlite and structure of ferrite-carbide mixture in cross-selection of rail head. As the distance to the surface of rails increases the relative content of metal volume with the structure of lamellar pearlite decreases and that with the structure of fractured pearlite and ferrite-carbide mixture increases. It has been established that the characteristic feature of ferrite-carbide mixture structure is a nanodimentional range of grains, subgrains and particles of the carbide phase forming it. The dimension of grains and subgrains forming the given type of structure varies within the limits of 40-70 nm. The size of carbide phase particles located along the boundaries of grains and subgrains varies within the limits of 8-20 nm. |
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=S1516-14392020000600214 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392020000600214 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1980-5373-mr-2020-0258 |
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 |
ABM, ABC, ABPol |
publisher.none.fl_str_mv |
ABM, ABC, ABPol |
dc.source.none.fl_str_mv |
Materials Research v.23 n.6 2020 reponame:Materials research (São Carlos. Online) instname:Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL |
instname_str |
Universidade Federal de São Carlos (UFSCAR) |
instacron_str |
ABM ABC ABPOL |
institution |
ABM ABC ABPOL |
reponame_str |
Materials research (São Carlos. Online) |
collection |
Materials research (São Carlos. Online) |
repository.name.fl_str_mv |
Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR) |
repository.mail.fl_str_mv |
dedz@power.ufscar.br |
_version_ |
1754212678014861312 |