GAS NITRIDING INFLUENCE ON FATIGUE AND CREEP BEHAVIORS IN TITANIUM GRADE 2

GAS NITRIDING INFLUENCE ON FATIGUE AND CREEP BEHAVIORS IN TITANIUM GRADE 2

The present work aims nitriding to investigate the effect on titanium grade 2 with rotating bending fatigue tests at room temperature and short-term creep tests at 500°C. The nitriding treatment was carried out at 850°C for 9 hours. After thermochemical treatment, XRD analysis revealed the formation...

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Main Authors: KMS Palma, GB Perina, VMO Velloso, CARP Baptista, MJR Barboza
Format: Article
Language:English
Published: EDP Sciences 2020-01-01
Series:MATEC Web of Conferences
Online Access:https://www.matec-conferences.org/articles/matecconf/pdf/2020/17/matecconf_ti2019_11095.pdf
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spelling doaj-d6bb55ef9a5e49faad3bd8a1217230082021-08-11T12:58:33ZengEDP SciencesMATEC Web of Conferences2261-236X2020-01-013211109510.1051/matecconf/202032111095matecconf_ti2019_11095GAS NITRIDING INFLUENCE ON FATIGUE AND CREEP BEHAVIORS IN TITANIUM GRADE 2KMS Palma,0GB Perina1VMO Velloso2CARP Baptista,3MJR Barboza,4Department of Materials, Escola de Engenharia de Lorena, University of São Paulo - USPDepartment of Materials, Escola de Engenharia de Lorena, University of São Paulo - USPDepartment of Materials and Technology, Fatigue and Aeronautic Materials Research Group, Faculdade de Engenharia de Guaratinguetá, São Paulo State University - UNESPDepartment of Materials, Escola de Engenharia de Lorena, University of São Paulo - USPDepartment of Materials, Escola de Engenharia de Lorena, University of São Paulo - USPThe present work aims nitriding to investigate the effect on titanium grade 2 with rotating bending fatigue tests at room temperature and short-term creep tests at 500°C. The nitriding treatment was carried out at 850°C for 9 hours. After thermochemical treatment, XRD analysis revealed the formation layer composed of TiN and Ti2N. Microscopy analysis revealed the presence of a uniform layer with a mean thickness of 3.6 mM and 50% increase in surface roughness. Fatigue life (107 cycles) was reduced by 42% by increasing surface roughness. On the other hand, nitriding treatment increased creep life by at least two times due to oxidation rate reducion and blocking dislocations movement by nitrogen in solid solution during the plastic deformation process.https://www.matec-conferences.org/articles/matecconf/pdf/2020/17/matecconf_ti2019_11095.pdf
collection DOAJ
language English
format Article
sources DOAJ
author KMS Palma,
GB Perina
VMO Velloso
CARP Baptista,
MJR Barboza,
spellingShingle KMS Palma,
GB Perina
VMO Velloso
CARP Baptista,
MJR Barboza,
GAS NITRIDING INFLUENCE ON FATIGUE AND CREEP BEHAVIORS IN TITANIUM GRADE 2
MATEC Web of Conferences
author_facet KMS Palma,
GB Perina
VMO Velloso
CARP Baptista,
MJR Barboza,
author_sort KMS Palma,
title GAS NITRIDING INFLUENCE ON FATIGUE AND CREEP BEHAVIORS IN TITANIUM GRADE 2
title_short GAS NITRIDING INFLUENCE ON FATIGUE AND CREEP BEHAVIORS IN TITANIUM GRADE 2
title_full GAS NITRIDING INFLUENCE ON FATIGUE AND CREEP BEHAVIORS IN TITANIUM GRADE 2
title_fullStr GAS NITRIDING INFLUENCE ON FATIGUE AND CREEP BEHAVIORS IN TITANIUM GRADE 2
title_full_unstemmed GAS NITRIDING INFLUENCE ON FATIGUE AND CREEP BEHAVIORS IN TITANIUM GRADE 2
title_sort gas nitriding influence on fatigue and creep behaviors in titanium grade 2
publisher EDP Sciences
series MATEC Web of Conferences
issn 2261-236X
publishDate 2020-01-01
description The present work aims nitriding to investigate the effect on titanium grade 2 with rotating bending fatigue tests at room temperature and short-term creep tests at 500°C. The nitriding treatment was carried out at 850°C for 9 hours. After thermochemical treatment, XRD analysis revealed the formation layer composed of TiN and Ti2N. Microscopy analysis revealed the presence of a uniform layer with a mean thickness of 3.6 mM and 50% increase in surface roughness. Fatigue life (107 cycles) was reduced by 42% by increasing surface roughness. On the other hand, nitriding treatment increased creep life by at least two times due to oxidation rate reducion and blocking dislocations movement by nitrogen in solid solution during the plastic deformation process.
url https://www.matec-conferences.org/articles/matecconf/pdf/2020/17/matecconf_ti2019_11095.pdf
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AT gbperina gasnitridinginfluenceonfatigueandcreepbehaviorsintitaniumgrade2
AT vmovelloso gasnitridinginfluenceonfatigueandcreepbehaviorsintitaniumgrade2
AT carpbaptista gasnitridinginfluenceonfatigueandcreepbehaviorsintitaniumgrade2
AT mjrbarboza gasnitridinginfluenceonfatigueandcreepbehaviorsintitaniumgrade2
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