Vickers hardness of cast commercially pure titanium and Ti-6Al-4V alloy submitted to heat treatments

Detalhes bibliográficos
Autor(a) principal: Da Rocha, Sicknan Soares [UNESP]
Data de Publicação: 2006
Outros Autores: Adabo, Gelson Luis [UNESP], Henriques, Guilherme Elias Pessanha, Nóbilo, Mauro Antônio de Arruda
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/S0103-64402006000200008
http://hdl.handle.net/11449/69291
Resumo: The purpose of this study was to evaluate the effect of heat treatments on the Vickers hardness of commercially pure titanium and Ti-6Al-4V cast alloys. Six-millimeter-diameter cylindrical specimens were cast in a Rematitan System. Commercially pure titanium and Ti-6Al-4V alloy specimens were randomly assigned to 3 groups (n=10) that received the following heat treatments: control (no heat treatment); treatment 1 (T1): heating at 750°C for 2 h; and treatment 2 (T2): annealing at 955°C for 1 h and aging at 620°C for 2 h. After heat treatments, the specimens were embedded in acrylic resin and their surface was ground and polished and hardness was measured. Vickers hardness means (VHN) and standard deviations were analyzed statistically by Kruskal-Wallis test at 5% significance level. For commercially pure titanium, Vickers hardness means of group T2 (259.90 VHN) was significantly higher than those of the other groups (control - 200.26 VHN and T1 - 202.23 VHN), which presented similar hardness means to each other (p>0.05). For Ti-6Al-4V alloy, statistically significant differences were observed among the three groups: T2 (369.08 VHN), T1 (351.94 VHN) and control (340.51 VHN) (p<0.05). The results demonstrated different hardness of CP Ti and Ti-6Al-4V when different heat treatments were used. For CP Ti, VHN means of T2 group was remarkably higher than those of control and T1 group, which showed similar VHN means to each other. For Ti-6Al-4V alloy, however, VHN means recorded for each group may be presented as follows: T2>T1>control.
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spelling Vickers hardness of cast commercially pure titanium and Ti-6Al-4V alloy submitted to heat treatmentsHeat treatmentsTitaniumVickers hardnessThe purpose of this study was to evaluate the effect of heat treatments on the Vickers hardness of commercially pure titanium and Ti-6Al-4V cast alloys. Six-millimeter-diameter cylindrical specimens were cast in a Rematitan System. Commercially pure titanium and Ti-6Al-4V alloy specimens were randomly assigned to 3 groups (n=10) that received the following heat treatments: control (no heat treatment); treatment 1 (T1): heating at 750°C for 2 h; and treatment 2 (T2): annealing at 955°C for 1 h and aging at 620°C for 2 h. After heat treatments, the specimens were embedded in acrylic resin and their surface was ground and polished and hardness was measured. Vickers hardness means (VHN) and standard deviations were analyzed statistically by Kruskal-Wallis test at 5% significance level. For commercially pure titanium, Vickers hardness means of group T2 (259.90 VHN) was significantly higher than those of the other groups (control - 200.26 VHN and T1 - 202.23 VHN), which presented similar hardness means to each other (p>0.05). For Ti-6Al-4V alloy, statistically significant differences were observed among the three groups: T2 (369.08 VHN), T1 (351.94 VHN) and control (340.51 VHN) (p<0.05). The results demonstrated different hardness of CP Ti and Ti-6Al-4V when different heat treatments were used. For CP Ti, VHN means of T2 group was remarkably higher than those of control and T1 group, which showed similar VHN means to each other. For Ti-6Al-4V alloy, however, VHN means recorded for each group may be presented as follows: T2>T1>control.Department of Dental Materials and Prosthodontics Faculty of Dentistry of Araraquara São Paulo State University, Araraquara, SPDepartment of Periodontology and Prosthodontics Faculty of Dentistry of Piracicaba State University of Campinas, Piracicaba, SPDepartamento de Materiais Odontológicos e Prótese FOAr/UNESP, Rua Humaitá, 1680, 14801-903 Araraquara, SPDepartment of Dental Materials and Prosthodontics Faculty of Dentistry of Araraquara São Paulo State University, Araraquara, SPDepartamento de Materiais Odontológicos e Prótese FOAr/UNESP, Rua Humaitá, 1680, 14801-903 Araraquara, SPUniversidade Estadual Paulista (Unesp)Universidade Estadual de Campinas (UNICAMP)Da Rocha, Sicknan Soares [UNESP]Adabo, Gelson Luis [UNESP]Henriques, Guilherme Elias PessanhaNóbilo, Mauro Antônio de Arruda2014-05-27T11:22:04Z2014-05-27T11:22:04Z2006-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article126-129application/pdfhttp://dx.doi.org/10.1590/S0103-64402006000200008Brazilian Dental Journal, v. 17, n. 2, p. 126-129, 2006.0103-64401806-4760http://hdl.handle.net/11449/6929110.1590/S0103-64402006000200008S0103-644020060002000082-s2.0-346488127122-s2.0-34648812712.pdf2851339311179809Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBrazilian Dental Journal0,476info:eu-repo/semantics/openAccess2024-09-27T14:57:34Zoai:repositorio.unesp.br:11449/69291Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462024-09-27T14:57:34Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Vickers hardness of cast commercially pure titanium and Ti-6Al-4V alloy submitted to heat treatments
title Vickers hardness of cast commercially pure titanium and Ti-6Al-4V alloy submitted to heat treatments
spellingShingle Vickers hardness of cast commercially pure titanium and Ti-6Al-4V alloy submitted to heat treatments
Da Rocha, Sicknan Soares [UNESP]
Heat treatments
Titanium
Vickers hardness
title_short Vickers hardness of cast commercially pure titanium and Ti-6Al-4V alloy submitted to heat treatments
title_full Vickers hardness of cast commercially pure titanium and Ti-6Al-4V alloy submitted to heat treatments
title_fullStr Vickers hardness of cast commercially pure titanium and Ti-6Al-4V alloy submitted to heat treatments
title_full_unstemmed Vickers hardness of cast commercially pure titanium and Ti-6Al-4V alloy submitted to heat treatments
title_sort Vickers hardness of cast commercially pure titanium and Ti-6Al-4V alloy submitted to heat treatments
author Da Rocha, Sicknan Soares [UNESP]
author_facet Da Rocha, Sicknan Soares [UNESP]
Adabo, Gelson Luis [UNESP]
Henriques, Guilherme Elias Pessanha
Nóbilo, Mauro Antônio de Arruda
author_role author
author2 Adabo, Gelson Luis [UNESP]
Henriques, Guilherme Elias Pessanha
Nóbilo, Mauro Antônio de Arruda
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Universidade Estadual de Campinas (UNICAMP)
dc.contributor.author.fl_str_mv Da Rocha, Sicknan Soares [UNESP]
Adabo, Gelson Luis [UNESP]
Henriques, Guilherme Elias Pessanha
Nóbilo, Mauro Antônio de Arruda
dc.subject.por.fl_str_mv Heat treatments
Titanium
Vickers hardness
topic Heat treatments
Titanium
Vickers hardness
description The purpose of this study was to evaluate the effect of heat treatments on the Vickers hardness of commercially pure titanium and Ti-6Al-4V cast alloys. Six-millimeter-diameter cylindrical specimens were cast in a Rematitan System. Commercially pure titanium and Ti-6Al-4V alloy specimens were randomly assigned to 3 groups (n=10) that received the following heat treatments: control (no heat treatment); treatment 1 (T1): heating at 750°C for 2 h; and treatment 2 (T2): annealing at 955°C for 1 h and aging at 620°C for 2 h. After heat treatments, the specimens were embedded in acrylic resin and their surface was ground and polished and hardness was measured. Vickers hardness means (VHN) and standard deviations were analyzed statistically by Kruskal-Wallis test at 5% significance level. For commercially pure titanium, Vickers hardness means of group T2 (259.90 VHN) was significantly higher than those of the other groups (control - 200.26 VHN and T1 - 202.23 VHN), which presented similar hardness means to each other (p>0.05). For Ti-6Al-4V alloy, statistically significant differences were observed among the three groups: T2 (369.08 VHN), T1 (351.94 VHN) and control (340.51 VHN) (p<0.05). The results demonstrated different hardness of CP Ti and Ti-6Al-4V when different heat treatments were used. For CP Ti, VHN means of T2 group was remarkably higher than those of control and T1 group, which showed similar VHN means to each other. For Ti-6Al-4V alloy, however, VHN means recorded for each group may be presented as follows: T2>T1>control.
publishDate 2006
dc.date.none.fl_str_mv 2006-12-01
2014-05-27T11:22:04Z
2014-05-27T11:22:04Z
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://dx.doi.org/10.1590/S0103-64402006000200008
Brazilian Dental Journal, v. 17, n. 2, p. 126-129, 2006.
0103-6440
1806-4760
http://hdl.handle.net/11449/69291
10.1590/S0103-64402006000200008
S0103-64402006000200008
2-s2.0-34648812712
2-s2.0-34648812712.pdf
2851339311179809
url http://dx.doi.org/10.1590/S0103-64402006000200008
http://hdl.handle.net/11449/69291
identifier_str_mv Brazilian Dental Journal, v. 17, n. 2, p. 126-129, 2006.
0103-6440
1806-4760
10.1590/S0103-64402006000200008
S0103-64402006000200008
2-s2.0-34648812712
2-s2.0-34648812712.pdf
2851339311179809
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Brazilian Dental Journal
0,476
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 126-129
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv repositoriounesp@unesp.br
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