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

Detalhes bibliográficos
Autor(a) principal: Rocha,Sicknan Soares da
Data de Publicação: 2006
Outros Autores: Adabo,Gelson Luis, Henriques,Guilherme Elias Pessanha, Nóbilo,Mauro Antônio de Arruda
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Dental Journal
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402006000200008
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 castalloys. 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 750ºC for 2 h; and treatment 2 (T2): annealing at 955ºC for 1 h and aging at 620ºC 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 treatmentstitaniumheat treatmentsVickers 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 castalloys. 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 750ºC for 2 h; and treatment 2 (T2): annealing at 955ºC for 1 h and aging at 620ºC 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.Fundação Odontológica de Ribeirão Preto2006-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402006000200008Brazilian Dental Journal v.17 n.2 2006reponame:Brazilian Dental Journalinstname:Fundação Odontológica de Ribeirão Preto (FUNORP)instacron:FUNORP10.1590/S0103-64402006000200008info:eu-repo/semantics/openAccessRocha,Sicknan Soares daAdabo,Gelson LuisHenriques,Guilherme Elias PessanhaNóbilo,Mauro Antônio de Arrudaeng2006-08-14T00:00:00Zoai:scielo:S0103-64402006000200008Revistahttps://www.scielo.br/j/bdj/https://old.scielo.br/oai/scielo-oai.phpbdj@forp.usp.br||sergio@fosjc.unesp.br1806-47600103-6440opendoar:2006-08-14T00:00Brazilian Dental Journal - Fundação Odontológica de Ribeirão Preto (FUNORP)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
Rocha,Sicknan Soares da
titanium
heat treatments
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 Rocha,Sicknan Soares da
author_facet Rocha,Sicknan Soares da
Adabo,Gelson Luis
Henriques,Guilherme Elias Pessanha
Nóbilo,Mauro Antônio de Arruda
author_role author
author2 Adabo,Gelson Luis
Henriques,Guilherme Elias Pessanha
Nóbilo,Mauro Antônio de Arruda
author2_role author
author
author
dc.contributor.author.fl_str_mv Rocha,Sicknan Soares da
Adabo,Gelson Luis
Henriques,Guilherme Elias Pessanha
Nóbilo,Mauro Antônio de Arruda
dc.subject.por.fl_str_mv titanium
heat treatments
Vickers hardness
topic titanium
heat treatments
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 castalloys. 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 750ºC for 2 h; and treatment 2 (T2): annealing at 955ºC for 1 h and aging at 620ºC 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 2006-01-01
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=S0103-64402006000200008
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402006000200008
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-64402006000200008
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 Fundação Odontológica de Ribeirão Preto
publisher.none.fl_str_mv Fundação Odontológica de Ribeirão Preto
dc.source.none.fl_str_mv Brazilian Dental Journal v.17 n.2 2006
reponame:Brazilian Dental Journal
instname:Fundação Odontológica de Ribeirão Preto (FUNORP)
instacron:FUNORP
instname_str Fundação Odontológica de Ribeirão Preto (FUNORP)
instacron_str FUNORP
institution FUNORP
reponame_str Brazilian Dental Journal
collection Brazilian Dental Journal
repository.name.fl_str_mv Brazilian Dental Journal - Fundação Odontológica de Ribeirão Preto (FUNORP)
repository.mail.fl_str_mv bdj@forp.usp.br||sergio@fosjc.unesp.br
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