Hydrogen embrittlement of a Fe-Cr-Ni alloy: Analysis of the physical and chemical processes in the early stage of stress corrosion cracking initiation
- Autores
- Simonetti, Sandra Isabel; Lanz, César Armando; Brizuela, Graciela Petra
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The interaction of two-hydrogen atoms in a zone of g-Fe55Cr25Ni20 alloy having a vacancy (V) was studied by the atom superposition and electron delocalization molecular orbital (ASED-MO) method. The impurities are located aligned both along [1e10] direction and with the vacancy, in the (111) plane. This behavior can be related with a lineal hydrogenevacancy clusterization, as a precursor to crack initiation. The electronic structure of the Fe, Cr and Ni atoms near the vacancy, changes after hydrogen’s location. The interactions mainly involve Fe 4px and Cr 4py atomic orbitals. The 3dx2 y2 ; 3dz2 and 3dxz metallic orbitals also have participation in the hydrogenealloy interactions. An electron transfer to the H atoms from the Fe, Cr and Ni nearest neighbor atoms contributes to form the new Hemetal bonds. The metalemetal bonds weakened as the new HeFe, HeCr, and HeNi pairs were formed. The Cr atoms have an important role in the embrittlent process; the strengths of the CreFe, CreCr and CreNi bonds are the most affected while the HeCr interaction has the highest overlap population. Same HeH interaction is observed and could be associated with the precursor of hydrogen bubble but it is far away to a typical H2 chemical bond. All the cited physical and chemical processes play a key role in subsequent localized corrosion nucleation such as the initiation of stress corrosion cracking.
Fil: Simonetti, Sandra Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Bahía Blanca. Instituto de Física del Sur; Argentina. Universidad Tecnológica Nacional. Facultad Regional Bahía Blanca; Argentina
Fil: Lanz, César Armando. Universidad Nacional del Sur. Departamento de Ingeniería; Argentina
Fil: Brizuela, Graciela Petra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Bahía Blanca. Instituto de Física del Sur; Argentina - Materia
-
COMPUTATIONAL TECHNIQUES
HYDROGEN EMBRITTLEMENT
IRON-NICKEL-CHROMIUM ALLOY - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/2065
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Hydrogen embrittlement of a Fe-Cr-Ni alloy: Analysis of the physical and chemical processes in the early stage of stress corrosion cracking initiationSimonetti, Sandra IsabelLanz, César ArmandoBrizuela, Graciela PetraCOMPUTATIONAL TECHNIQUESHYDROGEN EMBRITTLEMENTIRON-NICKEL-CHROMIUM ALLOYhttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2The interaction of two-hydrogen atoms in a zone of g-Fe55Cr25Ni20 alloy having a vacancy (V) was studied by the atom superposition and electron delocalization molecular orbital (ASED-MO) method. The impurities are located aligned both along [1e10] direction and with the vacancy, in the (111) plane. This behavior can be related with a lineal hydrogenevacancy clusterization, as a precursor to crack initiation. The electronic structure of the Fe, Cr and Ni atoms near the vacancy, changes after hydrogen’s location. The interactions mainly involve Fe 4px and Cr 4py atomic orbitals. The 3dx2 y2 ; 3dz2 and 3dxz metallic orbitals also have participation in the hydrogenealloy interactions. An electron transfer to the H atoms from the Fe, Cr and Ni nearest neighbor atoms contributes to form the new Hemetal bonds. The metalemetal bonds weakened as the new HeFe, HeCr, and HeNi pairs were formed. The Cr atoms have an important role in the embrittlent process; the strengths of the CreFe, CreCr and CreNi bonds are the most affected while the HeCr interaction has the highest overlap population. Same HeH interaction is observed and could be associated with the precursor of hydrogen bubble but it is far away to a typical H2 chemical bond. All the cited physical and chemical processes play a key role in subsequent localized corrosion nucleation such as the initiation of stress corrosion cracking.Fil: Simonetti, Sandra Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Bahía Blanca. Instituto de Física del Sur; Argentina. Universidad Tecnológica Nacional. Facultad Regional Bahía Blanca; ArgentinaFil: Lanz, César Armando. Universidad Nacional del Sur. Departamento de Ingeniería; ArgentinaFil: Brizuela, Graciela Petra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Bahía Blanca. Instituto de Física del Sur; ArgentinaElsevier2013-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/2065Simonetti, Sandra Isabel; Lanz, César Armando; Brizuela, Graciela Petra; Hydrogen embrittlement of a Fe-Cr-Ni alloy: Analysis of the physical and chemical processes in the early stage of stress corrosion cracking initiation; Elsevier; Solid State Sciences; 15; 1-2013; 137-1411293-2558enginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1293255812003202info:eu-repo/semantics/altIdentifier/doi/10.1016/j.solidstatesciences.2012.10.006info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:04:18Zoai:ri.conicet.gov.ar:11336/2065instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:04:18.469CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Hydrogen embrittlement of a Fe-Cr-Ni alloy: Analysis of the physical and chemical processes in the early stage of stress corrosion cracking initiation |
title |
Hydrogen embrittlement of a Fe-Cr-Ni alloy: Analysis of the physical and chemical processes in the early stage of stress corrosion cracking initiation |
spellingShingle |
Hydrogen embrittlement of a Fe-Cr-Ni alloy: Analysis of the physical and chemical processes in the early stage of stress corrosion cracking initiation Simonetti, Sandra Isabel COMPUTATIONAL TECHNIQUES HYDROGEN EMBRITTLEMENT IRON-NICKEL-CHROMIUM ALLOY |
title_short |
Hydrogen embrittlement of a Fe-Cr-Ni alloy: Analysis of the physical and chemical processes in the early stage of stress corrosion cracking initiation |
title_full |
Hydrogen embrittlement of a Fe-Cr-Ni alloy: Analysis of the physical and chemical processes in the early stage of stress corrosion cracking initiation |
title_fullStr |
Hydrogen embrittlement of a Fe-Cr-Ni alloy: Analysis of the physical and chemical processes in the early stage of stress corrosion cracking initiation |
title_full_unstemmed |
Hydrogen embrittlement of a Fe-Cr-Ni alloy: Analysis of the physical and chemical processes in the early stage of stress corrosion cracking initiation |
title_sort |
Hydrogen embrittlement of a Fe-Cr-Ni alloy: Analysis of the physical and chemical processes in the early stage of stress corrosion cracking initiation |
dc.creator.none.fl_str_mv |
Simonetti, Sandra Isabel Lanz, César Armando Brizuela, Graciela Petra |
author |
Simonetti, Sandra Isabel |
author_facet |
Simonetti, Sandra Isabel Lanz, César Armando Brizuela, Graciela Petra |
author_role |
author |
author2 |
Lanz, César Armando Brizuela, Graciela Petra |
author2_role |
author author |
dc.subject.none.fl_str_mv |
COMPUTATIONAL TECHNIQUES HYDROGEN EMBRITTLEMENT IRON-NICKEL-CHROMIUM ALLOY |
topic |
COMPUTATIONAL TECHNIQUES HYDROGEN EMBRITTLEMENT IRON-NICKEL-CHROMIUM ALLOY |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/2.5 https://purl.org/becyt/ford/2 |
dc.description.none.fl_txt_mv |
The interaction of two-hydrogen atoms in a zone of g-Fe55Cr25Ni20 alloy having a vacancy (V) was studied by the atom superposition and electron delocalization molecular orbital (ASED-MO) method. The impurities are located aligned both along [1e10] direction and with the vacancy, in the (111) plane. This behavior can be related with a lineal hydrogenevacancy clusterization, as a precursor to crack initiation. The electronic structure of the Fe, Cr and Ni atoms near the vacancy, changes after hydrogen’s location. The interactions mainly involve Fe 4px and Cr 4py atomic orbitals. The 3dx2 y2 ; 3dz2 and 3dxz metallic orbitals also have participation in the hydrogenealloy interactions. An electron transfer to the H atoms from the Fe, Cr and Ni nearest neighbor atoms contributes to form the new Hemetal bonds. The metalemetal bonds weakened as the new HeFe, HeCr, and HeNi pairs were formed. The Cr atoms have an important role in the embrittlent process; the strengths of the CreFe, CreCr and CreNi bonds are the most affected while the HeCr interaction has the highest overlap population. Same HeH interaction is observed and could be associated with the precursor of hydrogen bubble but it is far away to a typical H2 chemical bond. All the cited physical and chemical processes play a key role in subsequent localized corrosion nucleation such as the initiation of stress corrosion cracking. Fil: Simonetti, Sandra Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Bahía Blanca. Instituto de Física del Sur; Argentina. Universidad Tecnológica Nacional. Facultad Regional Bahía Blanca; Argentina Fil: Lanz, César Armando. Universidad Nacional del Sur. Departamento de Ingeniería; Argentina Fil: Brizuela, Graciela Petra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Bahía Blanca. Instituto de Física del Sur; Argentina |
description |
The interaction of two-hydrogen atoms in a zone of g-Fe55Cr25Ni20 alloy having a vacancy (V) was studied by the atom superposition and electron delocalization molecular orbital (ASED-MO) method. The impurities are located aligned both along [1e10] direction and with the vacancy, in the (111) plane. This behavior can be related with a lineal hydrogenevacancy clusterization, as a precursor to crack initiation. The electronic structure of the Fe, Cr and Ni atoms near the vacancy, changes after hydrogen’s location. The interactions mainly involve Fe 4px and Cr 4py atomic orbitals. The 3dx2 y2 ; 3dz2 and 3dxz metallic orbitals also have participation in the hydrogenealloy interactions. An electron transfer to the H atoms from the Fe, Cr and Ni nearest neighbor atoms contributes to form the new Hemetal bonds. The metalemetal bonds weakened as the new HeFe, HeCr, and HeNi pairs were formed. The Cr atoms have an important role in the embrittlent process; the strengths of the CreFe, CreCr and CreNi bonds are the most affected while the HeCr interaction has the highest overlap population. Same HeH interaction is observed and could be associated with the precursor of hydrogen bubble but it is far away to a typical H2 chemical bond. All the cited physical and chemical processes play a key role in subsequent localized corrosion nucleation such as the initiation of stress corrosion cracking. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-01 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/2065 Simonetti, Sandra Isabel; Lanz, César Armando; Brizuela, Graciela Petra; Hydrogen embrittlement of a Fe-Cr-Ni alloy: Analysis of the physical and chemical processes in the early stage of stress corrosion cracking initiation; Elsevier; Solid State Sciences; 15; 1-2013; 137-141 1293-2558 |
url |
http://hdl.handle.net/11336/2065 |
identifier_str_mv |
Simonetti, Sandra Isabel; Lanz, César Armando; Brizuela, Graciela Petra; Hydrogen embrittlement of a Fe-Cr-Ni alloy: Analysis of the physical and chemical processes in the early stage of stress corrosion cracking initiation; Elsevier; Solid State Sciences; 15; 1-2013; 137-141 1293-2558 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1293255812003202 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.solidstatesciences.2012.10.006 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844613868217696256 |
score |
13.070432 |