Retificabilidade das ligas de níquel Inconel 625 e Inconel 718
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFU |
Texto Completo: | https://repositorio.ufu.br/handle/123456789/27033 http://dx.doi.org/10.14393/ufu.te.2019.2242 |
Resumo: | Nickel-based superalloys are classified as difficult-to-cut materials. This difficulty becomes worse when these materials are processed by grinding, thus requiring more attention in the selection of proper grinding parameters. Among the nickel-based superalloys, the Inconel 718 is the most used alloy, however, the Inconel 625 alloy is also important because of its peculiar properties such as resistance to aqueous and hot corrosions, high strength and resistance to creep. In this sense and motivated by the lack of information about grinding of Inconel 625 alloy, this work evaluates the grindability of this superalloy and compares to the Inconel 718, in several operational conditions. The tests were divided in two stages. In the first stage, the effect of the main input parameters (depth of cut – ae, workspeed – vw, cutting speed – vs, grinding wheel mesh and grinding direction) was evaluated for the Inconel 625 based on surface roughness (Ra and Rz), grinding forces and specific energy in order to determine the statistically significant parameters and then use them for the tests for the evaluation of the grindability of the Inconel 625 and Inconel 718 (second stage). In this stage the ae, vw, vs and grinding wheel mesh were varied. The output parameters used to assess the grindability were the surface roughness (Ra and Rz), images of the ground surfaces obtained by scanning electron microscopy (SEM), microhardness on the surface and below it, grinding forces, specific energy and temperature in the grinding zone. In general, the results showed that the Inconel 625 is harder to grind than the Inconel 718. The surface roughness (Ra and Rz) obtained for Inconel 625 workpieces were higher than those obtained for Inconel 718 for all analyzed conditions. With the higher cutting speed, SEM images indicated a greater presence of plastic deformations on the Inconel 625 surfaces, which led to its work hardening, increasing the microhardness. Grinding forces and specific energy were slightly higher for Inconel 718, while the temperature in the grinding zone was higher for Inconel 625 when compared to Inconel 718. |
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Retificabilidade das ligas de níquel Inconel 625 e Inconel 718Grindability of nickel alloys Inconel 625 and Inconel 718Engenharia mecânicaMechanical engineeringRetificabilidadeGrindabilityInconel 625Inconel 718Temperatura de retificaçãoGrinding temperatureIntegridade da superfícieSurface integrityCNPQ::ENGENHARIAS::ENGENHARIA MECANICA::PROCESSOS DE FABRICACAONickel-based superalloys are classified as difficult-to-cut materials. This difficulty becomes worse when these materials are processed by grinding, thus requiring more attention in the selection of proper grinding parameters. Among the nickel-based superalloys, the Inconel 718 is the most used alloy, however, the Inconel 625 alloy is also important because of its peculiar properties such as resistance to aqueous and hot corrosions, high strength and resistance to creep. In this sense and motivated by the lack of information about grinding of Inconel 625 alloy, this work evaluates the grindability of this superalloy and compares to the Inconel 718, in several operational conditions. The tests were divided in two stages. In the first stage, the effect of the main input parameters (depth of cut – ae, workspeed – vw, cutting speed – vs, grinding wheel mesh and grinding direction) was evaluated for the Inconel 625 based on surface roughness (Ra and Rz), grinding forces and specific energy in order to determine the statistically significant parameters and then use them for the tests for the evaluation of the grindability of the Inconel 625 and Inconel 718 (second stage). In this stage the ae, vw, vs and grinding wheel mesh were varied. The output parameters used to assess the grindability were the surface roughness (Ra and Rz), images of the ground surfaces obtained by scanning electron microscopy (SEM), microhardness on the surface and below it, grinding forces, specific energy and temperature in the grinding zone. In general, the results showed that the Inconel 625 is harder to grind than the Inconel 718. The surface roughness (Ra and Rz) obtained for Inconel 625 workpieces were higher than those obtained for Inconel 718 for all analyzed conditions. With the higher cutting speed, SEM images indicated a greater presence of plastic deformations on the Inconel 625 surfaces, which led to its work hardening, increasing the microhardness. Grinding forces and specific energy were slightly higher for Inconel 718, while the temperature in the grinding zone was higher for Inconel 625 when compared to Inconel 718.CNPq - Conselho Nacional de Desenvolvimento Científico e TecnológicoTese (Doutorado)As ligas à base de níquel são consideradas como materiais difíceis de usinar, dificuldade que é ainda mais agravada quando elas são submetidas ao processo de retificação, exigindo assim mais atenção para determinar parâmetros de usinagem corretos. Dentre as ligas a base de níquel, a mais emprega é o Inconel 718, contudo, o Inconel 625 também tem se destacado pelas suas propriedades peculiares como a elevada resistência a corrosões aquosas e quentes, alta resistência mecânica e resistência à fluência. Neste sentido, este trabalho buscou avaliar o comportamento desta liga durante o processo de retificação e avaliar a sua retificabilidade em relação ao Inconel 718. Para isso foram testados vários parâmetros operacionais. Os ensaios foram realizados em duas etapas. Na primeira etapa foi avaliado o efeito dos principais parâmetros de entrada (penetração de trabalho – ae, velocidade da peça – vw, velocidade de corte – vs, granulometria do rebolo e sentido de retificação) no processo de retificação do Inconel 625 com base na rugosidade (Ra e Rz), forças de corte e energia específica a fim de determinar os parâmetros estatisticamente significativos e então realizar o ensaios para a avaliação da retificabilidade do Inconel 625 (segunda etapa). Nesta etapa foram variados o ae, vw, vs e a granulometria do rebolo na retificação do Inconel 625 e do Inconel 718. Os parâmetros de saída avaliados foram a rugosidade (Ra e Rz), imagens da superfície retificada obtidas via microscopia eletrônica de varredura (MEV), microdureza na superfície e abaixo dela, forças de retificação, energia específica e temperatura na zona de retificação. Em geral, os resultados indicaram que o Inconel 625 apresenta maiores dificuldades para ser retificado que o Inconel 718. As rugosidades (Ra e Rz) obtidas para as peças de Inconel 625 foram maiores que as obtidas para o Inconel 718, em todas as condições analisadas. Sob velocidade de corte mais elevada, houve uma maior presença de deformações plásticas nas superfícies do Inconel 625, que levou ao encruamento da mesma, elevando a microdureza. As forças de corte, assim como a energia específica foram ligeiramente maiores para o Inconel 718, enquanto a temperatura na zona de retificação foi maior para o Inconel 625 quando comparado ao Inconel 718.2021-08-22Universidade Federal de UberlândiaBrasilPrograma de Pós-graduação em Engenharia MecânicaSilva, Rosemar Batista dahttp://lattes.cnpq.br/8157858526322556Machado, Alisson Rochahttp://buscatextual.cnpq.br/buscatextual/visualizacv.jsp?id=K4781203T2Reis, Ruham Pablohttp://lattes.cnpq.br/6871774879330255Abrão, Alexandre Mendeshttp://lattes.cnpq.br/4498255089432603Brandão, Lincoln Cardosohttp://lattes.cnpq.br/6692605216100628Ruzzi, Rodrigo de Souza2019-09-25T13:29:23Z2019-09-25T13:29:23Z2019-08-22info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdfRUZZI, Rodrigo de Souza. Retificabilidade das ligas de níquel Inconel 625 e Inconel 718. 2019. 160 fl. Tese (Doutorado em Engenharia Mecânica) - Universidade Federal de Uberlândia, Uberlândia, 2019. DOI http://dx.doi.org/10.14393/ufu.te.2019.2242https://repositorio.ufu.br/handle/123456789/27033http://dx.doi.org/10.14393/ufu.te.2019.2242porinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFUinstname:Universidade Federal de Uberlândia (UFU)instacron:UFU2022-10-19T13:05:58Zoai:repositorio.ufu.br:123456789/27033Repositório InstitucionalONGhttp://repositorio.ufu.br/oai/requestdiinf@dirbi.ufu.bropendoar:2022-10-19T13:05:58Repositório Institucional da UFU - Universidade Federal de Uberlândia (UFU)false |
dc.title.none.fl_str_mv |
Retificabilidade das ligas de níquel Inconel 625 e Inconel 718 Grindability of nickel alloys Inconel 625 and Inconel 718 |
title |
Retificabilidade das ligas de níquel Inconel 625 e Inconel 718 |
spellingShingle |
Retificabilidade das ligas de níquel Inconel 625 e Inconel 718 Ruzzi, Rodrigo de Souza Engenharia mecânica Mechanical engineering Retificabilidade Grindability Inconel 625 Inconel 718 Temperatura de retificação Grinding temperature Integridade da superfície Surface integrity CNPQ::ENGENHARIAS::ENGENHARIA MECANICA::PROCESSOS DE FABRICACAO |
title_short |
Retificabilidade das ligas de níquel Inconel 625 e Inconel 718 |
title_full |
Retificabilidade das ligas de níquel Inconel 625 e Inconel 718 |
title_fullStr |
Retificabilidade das ligas de níquel Inconel 625 e Inconel 718 |
title_full_unstemmed |
Retificabilidade das ligas de níquel Inconel 625 e Inconel 718 |
title_sort |
Retificabilidade das ligas de níquel Inconel 625 e Inconel 718 |
author |
Ruzzi, Rodrigo de Souza |
author_facet |
Ruzzi, Rodrigo de Souza |
author_role |
author |
dc.contributor.none.fl_str_mv |
Silva, Rosemar Batista da http://lattes.cnpq.br/8157858526322556 Machado, Alisson Rocha http://buscatextual.cnpq.br/buscatextual/visualizacv.jsp?id=K4781203T2 Reis, Ruham Pablo http://lattes.cnpq.br/6871774879330255 Abrão, Alexandre Mendes http://lattes.cnpq.br/4498255089432603 Brandão, Lincoln Cardoso http://lattes.cnpq.br/6692605216100628 |
dc.contributor.author.fl_str_mv |
Ruzzi, Rodrigo de Souza |
dc.subject.por.fl_str_mv |
Engenharia mecânica Mechanical engineering Retificabilidade Grindability Inconel 625 Inconel 718 Temperatura de retificação Grinding temperature Integridade da superfície Surface integrity CNPQ::ENGENHARIAS::ENGENHARIA MECANICA::PROCESSOS DE FABRICACAO |
topic |
Engenharia mecânica Mechanical engineering Retificabilidade Grindability Inconel 625 Inconel 718 Temperatura de retificação Grinding temperature Integridade da superfície Surface integrity CNPQ::ENGENHARIAS::ENGENHARIA MECANICA::PROCESSOS DE FABRICACAO |
description |
Nickel-based superalloys are classified as difficult-to-cut materials. This difficulty becomes worse when these materials are processed by grinding, thus requiring more attention in the selection of proper grinding parameters. Among the nickel-based superalloys, the Inconel 718 is the most used alloy, however, the Inconel 625 alloy is also important because of its peculiar properties such as resistance to aqueous and hot corrosions, high strength and resistance to creep. In this sense and motivated by the lack of information about grinding of Inconel 625 alloy, this work evaluates the grindability of this superalloy and compares to the Inconel 718, in several operational conditions. The tests were divided in two stages. In the first stage, the effect of the main input parameters (depth of cut – ae, workspeed – vw, cutting speed – vs, grinding wheel mesh and grinding direction) was evaluated for the Inconel 625 based on surface roughness (Ra and Rz), grinding forces and specific energy in order to determine the statistically significant parameters and then use them for the tests for the evaluation of the grindability of the Inconel 625 and Inconel 718 (second stage). In this stage the ae, vw, vs and grinding wheel mesh were varied. The output parameters used to assess the grindability were the surface roughness (Ra and Rz), images of the ground surfaces obtained by scanning electron microscopy (SEM), microhardness on the surface and below it, grinding forces, specific energy and temperature in the grinding zone. In general, the results showed that the Inconel 625 is harder to grind than the Inconel 718. The surface roughness (Ra and Rz) obtained for Inconel 625 workpieces were higher than those obtained for Inconel 718 for all analyzed conditions. With the higher cutting speed, SEM images indicated a greater presence of plastic deformations on the Inconel 625 surfaces, which led to its work hardening, increasing the microhardness. Grinding forces and specific energy were slightly higher for Inconel 718, while the temperature in the grinding zone was higher for Inconel 625 when compared to Inconel 718. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-09-25T13:29:23Z 2019-09-25T13:29:23Z 2019-08-22 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
RUZZI, Rodrigo de Souza. Retificabilidade das ligas de níquel Inconel 625 e Inconel 718. 2019. 160 fl. Tese (Doutorado em Engenharia Mecânica) - Universidade Federal de Uberlândia, Uberlândia, 2019. DOI http://dx.doi.org/10.14393/ufu.te.2019.2242 https://repositorio.ufu.br/handle/123456789/27033 http://dx.doi.org/10.14393/ufu.te.2019.2242 |
identifier_str_mv |
RUZZI, Rodrigo de Souza. Retificabilidade das ligas de níquel Inconel 625 e Inconel 718. 2019. 160 fl. Tese (Doutorado em Engenharia Mecânica) - Universidade Federal de Uberlândia, Uberlândia, 2019. DOI http://dx.doi.org/10.14393/ufu.te.2019.2242 |
url |
https://repositorio.ufu.br/handle/123456789/27033 http://dx.doi.org/10.14393/ufu.te.2019.2242 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Uberlândia Brasil Programa de Pós-graduação em Engenharia Mecânica |
publisher.none.fl_str_mv |
Universidade Federal de Uberlândia Brasil Programa de Pós-graduação em Engenharia Mecânica |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFU instname:Universidade Federal de Uberlândia (UFU) instacron:UFU |
instname_str |
Universidade Federal de Uberlândia (UFU) |
instacron_str |
UFU |
institution |
UFU |
reponame_str |
Repositório Institucional da UFU |
collection |
Repositório Institucional da UFU |
repository.name.fl_str_mv |
Repositório Institucional da UFU - Universidade Federal de Uberlândia (UFU) |
repository.mail.fl_str_mv |
diinf@dirbi.ufu.br |
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1805569729909227520 |