Thermal treatment effects on high-Mn TWIP steels
This master thesis is going to study and investigate the thermal treatment’s effects on the high Mn-TWIP steels. In order to get these aims some factors can be studied, such microstructures and mechanical properties of high Mn-TWIP steels. The objective of this study are as follows: Study the micr...
| Autor: | |
|---|---|
| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2014 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2099.1/24457 |
| Acceso en línea: | https://hdl.handle.net/2099.1/24457 |
| Access Level: | acceso abierto |
| Palabra clave: | Manganese steel TWIP steel Hardness EBSD AFM Acer austenític Acer d'alta resistència -- Propietats mecàniques Acer -- Tractament tèrmic Àrees temàtiques de la UPC::Enginyeria dels materials |
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Thermal treatment effects on high-Mn TWIP steelsBesharatloo, Hossein|||0000-0003-2942-8206Manganese steelTWIP steelHardnessEBSDAFMAcer austeníticAcer d'alta resistència -- Propietats mecàniquesAcer -- Tractament tèrmicÀrees temàtiques de la UPC::Enginyeria dels materialsThis master thesis is going to study and investigate the thermal treatment’s effects on the high Mn-TWIP steels. In order to get these aims some factors can be studied, such microstructures and mechanical properties of high Mn-TWIP steels. The objective of this study are as follows: Study the microstructure evolution of high Mn-TWIP steels thermally treated (i.e. grain size, phase transformation, etc). Study the mechanical properties (hardness, tensile properties and high cycle fatigue) of high Mn-TWIP steels with different microstructures. Thermal fatigue evolution (from 0 up to 75 cycles) at 500°C in order to determine the microstructure evolution and their mechanical properties (harness and tensile properties). In present project, in order to study the microstructure the field emission scanning electron microscopy (FESEM) used. For testing the mechanical properties, Vickers hardness method applied for hardness test, tension condition for tensile test and high cycle fatigue has been used for fatigue properties. Microstructural study indicates that thermal treatment can change the microstructure of the samples, it observed that the grain size changed in various condition. Martensitic and pearlitic transformation occurred under thermal treatments and thermal fatigue conditions respectively. In samples which were thermally fatigued, the concentration of the pearlitic phase increased by increasing the number of cycles. Thermal treatments can have some effects on mechanical properties. Hardness of the materials decrease by increasing the temperature in thermal treatments while thermal fatigue increases the hardness of materials by increasing the number of cycles. Samples which were thermally treated and thermally fatigued showed more brittle behavior compared with the samples which were not thermally treated. It have seen that the voids, TiN and pearlitic phase are the main reasons of fracture under tensile tests. Finally it observed that the life time of the materials can be affected by annealing the samples at 1000°C and normalizing this sample in air.Universitat Politècnica de CatalunyaMateo García, Antonio Manuel20142014-12-0520152015-01-10master thesishttp://purl.org/coar/resource_type/c_bdccNAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/masterThesisapplication/pdfhttps://hdl.handle.net/2099.1/24457reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivs 3.0 Spainhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2099.1/244572026-05-27T15:37:01Z |
| dc.title.none.fl_str_mv |
Thermal treatment effects on high-Mn TWIP steels |
| title |
Thermal treatment effects on high-Mn TWIP steels |
| spellingShingle |
Thermal treatment effects on high-Mn TWIP steels Besharatloo, Hossein|||0000-0003-2942-8206 Manganese steel TWIP steel Hardness EBSD AFM Acer austenític Acer d'alta resistència -- Propietats mecàniques Acer -- Tractament tèrmic Àrees temàtiques de la UPC::Enginyeria dels materials |
| title_short |
Thermal treatment effects on high-Mn TWIP steels |
| title_full |
Thermal treatment effects on high-Mn TWIP steels |
| title_fullStr |
Thermal treatment effects on high-Mn TWIP steels |
| title_full_unstemmed |
Thermal treatment effects on high-Mn TWIP steels |
| title_sort |
Thermal treatment effects on high-Mn TWIP steels |
| dc.creator.none.fl_str_mv |
Besharatloo, Hossein|||0000-0003-2942-8206 |
| author |
Besharatloo, Hossein|||0000-0003-2942-8206 |
| author_facet |
Besharatloo, Hossein|||0000-0003-2942-8206 |
| author_role |
author |
| dc.contributor.none.fl_str_mv |
Mateo García, Antonio Manuel |
| dc.subject.none.fl_str_mv |
Manganese steel TWIP steel Hardness EBSD AFM Acer austenític Acer d'alta resistència -- Propietats mecàniques Acer -- Tractament tèrmic Àrees temàtiques de la UPC::Enginyeria dels materials |
| topic |
Manganese steel TWIP steel Hardness EBSD AFM Acer austenític Acer d'alta resistència -- Propietats mecàniques Acer -- Tractament tèrmic Àrees temàtiques de la UPC::Enginyeria dels materials |
| description |
This master thesis is going to study and investigate the thermal treatment’s effects on the high Mn-TWIP steels. In order to get these aims some factors can be studied, such microstructures and mechanical properties of high Mn-TWIP steels. The objective of this study are as follows: Study the microstructure evolution of high Mn-TWIP steels thermally treated (i.e. grain size, phase transformation, etc). Study the mechanical properties (hardness, tensile properties and high cycle fatigue) of high Mn-TWIP steels with different microstructures. Thermal fatigue evolution (from 0 up to 75 cycles) at 500°C in order to determine the microstructure evolution and their mechanical properties (harness and tensile properties). In present project, in order to study the microstructure the field emission scanning electron microscopy (FESEM) used. For testing the mechanical properties, Vickers hardness method applied for hardness test, tension condition for tensile test and high cycle fatigue has been used for fatigue properties. Microstructural study indicates that thermal treatment can change the microstructure of the samples, it observed that the grain size changed in various condition. Martensitic and pearlitic transformation occurred under thermal treatments and thermal fatigue conditions respectively. In samples which were thermally fatigued, the concentration of the pearlitic phase increased by increasing the number of cycles. Thermal treatments can have some effects on mechanical properties. Hardness of the materials decrease by increasing the temperature in thermal treatments while thermal fatigue increases the hardness of materials by increasing the number of cycles. Samples which were thermally treated and thermally fatigued showed more brittle behavior compared with the samples which were not thermally treated. It have seen that the voids, TiN and pearlitic phase are the main reasons of fracture under tensile tests. Finally it observed that the life time of the materials can be affected by annealing the samples at 1000°C and normalizing this sample in air. |
| publishDate |
2014 |
| dc.date.none.fl_str_mv |
2014 2014-12-05 2015 2015-01-10 |
| dc.type.none.fl_str_mv |
master thesis http://purl.org/coar/resource_type/c_bdcc NA http://purl.org/coar/version/c_be7fb7dd8ff6fe43 |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/masterThesis |
| format |
masterThesis |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/2099.1/24457 |
| url |
https://hdl.handle.net/2099.1/24457 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 Attribution-NonCommercial-NoDerivs 3.0 Spain http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
| dc.rights.openaire.fl_str_mv |
info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
open access http://purl.org/coar/access_right/c_abf2 Attribution-NonCommercial-NoDerivs 3.0 Spain http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.publisher.none.fl_str_mv |
Universitat Politècnica de Catalunya |
| publisher.none.fl_str_mv |
Universitat Politècnica de Catalunya |
| dc.source.none.fl_str_mv |
reponame:UPCommons. Portal del coneixement obert de la UPC instname:Universitat Politècnica de Catalunya (UPC) |
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Universitat Politècnica de Catalunya (UPC) |
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UPCommons. Portal del coneixement obert de la UPC |
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UPCommons. Portal del coneixement obert de la UPC |
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1869411607564517376 |
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15,300719 |