Study of machinability of metal matrix composites produced by upward friction stir processing
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10362/158289 |
Resumo: | Metal matrix composites (MMC) are materials that have attracted a lot of attention in several industries such as aerospace and automotive due to their excellent mechanical properties. Nowadays, one of the most used process to produce MMC is the Friction Stir Processing (FSP), which modifies the microstructure of the metal and allows the addition of reinforcement particles. Most of these materials require machining operations to obtain the desired shape, size and surface quality. However, machining of MMC is usually associated with high cutting forces, severe tool wear and poor surface quality. In this investigation, MMC were produced via an innovant variant known as Upward Friction Stir Processing (UFSP), by adding SiC particles to the aluminium matrix. Subsequently, several milling operations were performed, where the cutting speed and feed rate were varied in order to analyse the evolution of cutting forces as well as tool wear and surface roughness. Thus, it was possible to have a perception of the most suitable parameters for machining these materials. The results achieved demonstrate that these three indicators are interrelated, and that tool wear is the most critical parameter in the milling of MMC. Additionally, also the particle distribution in the matrix had influence on the results. |
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Study of machinability of metal matrix composites produced by upward friction stir processingMetal matrix compositesMillingCutting forceTool wearSurface qualityDomínio/Área Científica::Engenharia e Tecnologia::Engenharia MecânicaMetal matrix composites (MMC) are materials that have attracted a lot of attention in several industries such as aerospace and automotive due to their excellent mechanical properties. Nowadays, one of the most used process to produce MMC is the Friction Stir Processing (FSP), which modifies the microstructure of the metal and allows the addition of reinforcement particles. Most of these materials require machining operations to obtain the desired shape, size and surface quality. However, machining of MMC is usually associated with high cutting forces, severe tool wear and poor surface quality. In this investigation, MMC were produced via an innovant variant known as Upward Friction Stir Processing (UFSP), by adding SiC particles to the aluminium matrix. Subsequently, several milling operations were performed, where the cutting speed and feed rate were varied in order to analyse the evolution of cutting forces as well as tool wear and surface roughness. Thus, it was possible to have a perception of the most suitable parameters for machining these materials. The results achieved demonstrate that these three indicators are interrelated, and that tool wear is the most critical parameter in the milling of MMC. Additionally, also the particle distribution in the matrix had influence on the results.Os compósitos de matriz metálica são materiais que têm atraído muita atenção em várias indústrias, tais como a aeroespacial e automóvel, devido às suas excelentes propriedades mecânicas. Atualmente, um dos processos mais utilizados para produzir compósitos de matriz metálica é o Friction Stir Processing (FSP), que modifica a microestrutura do metal e permite a adição de partículas de reforço. A maioria destes materiais requer operações de maquinação para obter a forma, tamanho e qualidade de superfície desejada. Contudo, a maquinação de compósitos de matriz metálica está normalmente associada a elevadas forças de corte, desgaste severo da ferramenta e má qualidade superficial. Nesta investigação, os compósitos de matriz metálica foram produzidos através de uma variante inovadora conhecida como Upward Friction Stir Processing (UFSP), adicionando partículas de SiC à matriz de alumínio. Seguidamente, foram realizadas várias operações de fresagem, onde a velocidade de corte e o avanço foram variados de modo a analisar a evolução das forças de corte, bem como o desgaste da ferramenta e a rugosidade da superfície. Assim, foi possível ter uma perceção dos parâmetros mais adequados para a maquinação destes materiais. Os resultados obtidos demonstram que estes três indicadores estão inter-relacionados, e que o desgaste da ferramenta é o parâmetro mais crítico na fresagem de compósitos de matriz metálica. Além disso, também a distribuição de partículas na matriz teve influência nos resultados.Machado, CarlaVidal, CatarinaRUNMatos, Diogo Alexandre da Silva2023-09-26T14:30:08Z2022-122022-12-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10362/158289enginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-11T05:40:37Zoai:run.unl.pt:10362/158289Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:57:03.748431Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Study of machinability of metal matrix composites produced by upward friction stir processing |
title |
Study of machinability of metal matrix composites produced by upward friction stir processing |
spellingShingle |
Study of machinability of metal matrix composites produced by upward friction stir processing Matos, Diogo Alexandre da Silva Metal matrix composites Milling Cutting force Tool wear Surface quality Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Mecânica |
title_short |
Study of machinability of metal matrix composites produced by upward friction stir processing |
title_full |
Study of machinability of metal matrix composites produced by upward friction stir processing |
title_fullStr |
Study of machinability of metal matrix composites produced by upward friction stir processing |
title_full_unstemmed |
Study of machinability of metal matrix composites produced by upward friction stir processing |
title_sort |
Study of machinability of metal matrix composites produced by upward friction stir processing |
author |
Matos, Diogo Alexandre da Silva |
author_facet |
Matos, Diogo Alexandre da Silva |
author_role |
author |
dc.contributor.none.fl_str_mv |
Machado, Carla Vidal, Catarina RUN |
dc.contributor.author.fl_str_mv |
Matos, Diogo Alexandre da Silva |
dc.subject.por.fl_str_mv |
Metal matrix composites Milling Cutting force Tool wear Surface quality Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Mecânica |
topic |
Metal matrix composites Milling Cutting force Tool wear Surface quality Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Mecânica |
description |
Metal matrix composites (MMC) are materials that have attracted a lot of attention in several industries such as aerospace and automotive due to their excellent mechanical properties. Nowadays, one of the most used process to produce MMC is the Friction Stir Processing (FSP), which modifies the microstructure of the metal and allows the addition of reinforcement particles. Most of these materials require machining operations to obtain the desired shape, size and surface quality. However, machining of MMC is usually associated with high cutting forces, severe tool wear and poor surface quality. In this investigation, MMC were produced via an innovant variant known as Upward Friction Stir Processing (UFSP), by adding SiC particles to the aluminium matrix. Subsequently, several milling operations were performed, where the cutting speed and feed rate were varied in order to analyse the evolution of cutting forces as well as tool wear and surface roughness. Thus, it was possible to have a perception of the most suitable parameters for machining these materials. The results achieved demonstrate that these three indicators are interrelated, and that tool wear is the most critical parameter in the milling of MMC. Additionally, also the particle distribution in the matrix had influence on the results. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-12 2022-12-01T00:00:00Z 2023-09-26T14:30:08Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10362/158289 |
url |
http://hdl.handle.net/10362/158289 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
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.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799138153812983808 |