Otimização do processo de soldagem por fricção por ponto (FSpW) de soldas de materiais similares e dissimilares de ligas leves
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFSCAR |
Texto Completo: | https://repositorio.ufscar.br/handle/ufscar/930 |
Resumo: | Currently there is a lot of pressure in the aeronautical and automobilistic transport section in order to reduce the fuel consumption and consequently cost and gas emissions. This measure has increased in the last years the use of light alloys, as the alluminium s alloys and of more efficient methods for joining them. Nevertheless, there is some difficult in joining these alloys using the conventional methods. The Friction Spot Welding (FSpW) is a solid state joining technique, that has great advantages regarding others joining techniques, and therefore could be a viable alternative to replace the established technologies as Resistance Spot Welding (RSW) and riveting, which are widely used by the automotive industry. The present works aims to study, through the Friction Spot Welding process (FSpW), the similar welding conditions of AA5754-H111 aluminium alloy and also the dissimilar welds between AA5754-H111 aluminium alloy and AZ31-O magnesium alloy. The influence of process parameters over the microstructure and the mechanical properties of the welded joints, as well as, the optimization of the welding process were evaluated. The joints were produced in overlap configuration through a different combination of parameters, which were established by statistical methods for design of experiments, and later submitted to mechanical and metallurgical characterization. The results proved the feasibility of joining the similar and dissimilar plates of aluminium AA5754 and magnesium AZ31 through FSpW process. The similar joints showed great results of shear strength. However, in the dissimilar joints, the utilization of a zinc interlayer, in spite of leading to a great superficial finishing, didn t effectively decrease the amount of intermetallic compounds formed in the joint as it was expected, leading to low values of shear strength. |
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Piccolo, Debora Regina GastaldiAlcântara, Nelson Guedes dehttp://genos.cnpq.br:12010/dwlattes/owa/prc_imp_cv_int?f_cod=K4783686Z9http://lattes.cnpq.br/3586398504200450a046c79d-f1a4-4724-9555-8ac6bd23f4092016-06-02T19:12:38Z2014-10-062016-06-02T19:12:38Z2014-08-07PICCOLO, Debora Regina Gastaldi. optimization of friction spot welding (FSpW) process of similar and dissimilar welds of light alloys. 2014. 116 f. Dissertação (Mestrado em Ciências Exatas e da Terra) - Universidade Federal de São Carlos, São Carlos, 2014.https://repositorio.ufscar.br/handle/ufscar/930Currently there is a lot of pressure in the aeronautical and automobilistic transport section in order to reduce the fuel consumption and consequently cost and gas emissions. This measure has increased in the last years the use of light alloys, as the alluminium s alloys and of more efficient methods for joining them. Nevertheless, there is some difficult in joining these alloys using the conventional methods. The Friction Spot Welding (FSpW) is a solid state joining technique, that has great advantages regarding others joining techniques, and therefore could be a viable alternative to replace the established technologies as Resistance Spot Welding (RSW) and riveting, which are widely used by the automotive industry. The present works aims to study, through the Friction Spot Welding process (FSpW), the similar welding conditions of AA5754-H111 aluminium alloy and also the dissimilar welds between AA5754-H111 aluminium alloy and AZ31-O magnesium alloy. The influence of process parameters over the microstructure and the mechanical properties of the welded joints, as well as, the optimization of the welding process were evaluated. The joints were produced in overlap configuration through a different combination of parameters, which were established by statistical methods for design of experiments, and later submitted to mechanical and metallurgical characterization. The results proved the feasibility of joining the similar and dissimilar plates of aluminium AA5754 and magnesium AZ31 through FSpW process. The similar joints showed great results of shear strength. However, in the dissimilar joints, the utilization of a zinc interlayer, in spite of leading to a great superficial finishing, didn t effectively decrease the amount of intermetallic compounds formed in the joint as it was expected, leading to low values of shear strength.Atualmente existe uma grande pressão no setor de transportes aeronáutico e automobilístico, a fim de reduzir o consumo de combustíveis, e consequentemente, o custo e as emissões de gases. Essa medida aumentou, nos últimos anos, o uso de ligas leves como as de alumínio e de magnésio, bem como métodos mais eficientes de uni-las. Porém, existem certas dificuldades em se unir essas ligas através de métodos convencionais de soldagem por fusão [1]. A Soldagem por Fricção por Ponto (do inglês, Friction Spot Welding - FSpW), possui várias vantagens com relação a outras técnicas de soldagem, podendo ser uma alternativa viável para substituir tecnologias, tais como Soldagem por Resistência por Ponto (RSW) e rebitagem, já muito usadas pela indústria automobilística [2] [3]. O presente trabalho visou estudar, pelo processo de FSpW, as condições de soldas similares da liga de alumínio AA5754-H111 e também de soldas dissimilares da liga de alumínio AA5754-H111 com a liga de magnésio AZ31-O, utilizando uma camada intermediária de zinco. A influência dos parâmetros de processo sobre a microestrutura e as propriedades mecânicas das juntas soldadas, assim como a otimização do processo de soldagem foram avaliadas. As soldas foram produzidas em configuração de sobreposição por diferentes combinações de parâmetros, as quais foram estabelecidas por metodologias estatísticas de planejamento de experimentos, e posteriormente submetidas à caracterização mecânica e metalúrgica. Os resultados comprovaram a possibilidade de união similar e dissimilar das chapas de alumínio AA5754 com as de magnésio AZ31 pelo FSpW. As soldas de materiais similares mostraram resultados satisfatórios de resistência ao cisalhamento. Entretanto, nas soldas de materiais dissimilares a utilização de uma camada intermediária de zinco, apesar de ter levado a um bom acabamento superficial, não reduziu efetivamente a quantidade de fases intermetálicas formadas nas juntas como o esperado, levando a valores baixos de resistência ao cisalhamento.application/pdfporUniversidade Federal de São CarlosPrograma de Pós-Graduação em Ciência e Engenharia de Materiais - PPGCEMUFSCarBRSoldagemFSpWLigas de alumínioLigas de magnésioENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICAOtimização do processo de soldagem por fricção por ponto (FSpW) de soldas de materiais similares e dissimilares de ligas levesoptimization of friction spot welding (FSpW) process of similar and dissimilar welds of light alloysinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis-1-12d631e29-7060-435a-b7f6-9e02c8d5a930info:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFSCARinstname:Universidade Federal de São Carlos (UFSCAR)instacron:UFSCARORIGINAL6225.pdfapplication/pdf3783429https://repositorio.ufscar.br/bitstream/ufscar/930/1/6225.pdf00e19e39c679c757c5ab39b60440a488MD51TEXT6225.pdf.txt6225.pdf.txtExtracted texttext/plain0https://repositorio.ufscar.br/bitstream/ufscar/930/2/6225.pdf.txtd41d8cd98f00b204e9800998ecf8427eMD52THUMBNAIL6225.pdf.jpg6225.pdf.jpgIM Thumbnailimage/jpeg6961https://repositorio.ufscar.br/bitstream/ufscar/930/3/6225.pdf.jpgf71b1452d75aab8e5b012656e17234e5MD53ufscar/9302023-09-18 18:31:43.914oai:repositorio.ufscar.br:ufscar/930Repositório InstitucionalPUBhttps://repositorio.ufscar.br/oai/requestopendoar:43222023-09-18T18:31:43Repositório Institucional da UFSCAR - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.por.fl_str_mv |
Otimização do processo de soldagem por fricção por ponto (FSpW) de soldas de materiais similares e dissimilares de ligas leves |
dc.title.alternative.eng.fl_str_mv |
optimization of friction spot welding (FSpW) process of similar and dissimilar welds of light alloys |
title |
Otimização do processo de soldagem por fricção por ponto (FSpW) de soldas de materiais similares e dissimilares de ligas leves |
spellingShingle |
Otimização do processo de soldagem por fricção por ponto (FSpW) de soldas de materiais similares e dissimilares de ligas leves Piccolo, Debora Regina Gastaldi Soldagem FSpW Ligas de alumínio Ligas de magnésio ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA |
title_short |
Otimização do processo de soldagem por fricção por ponto (FSpW) de soldas de materiais similares e dissimilares de ligas leves |
title_full |
Otimização do processo de soldagem por fricção por ponto (FSpW) de soldas de materiais similares e dissimilares de ligas leves |
title_fullStr |
Otimização do processo de soldagem por fricção por ponto (FSpW) de soldas de materiais similares e dissimilares de ligas leves |
title_full_unstemmed |
Otimização do processo de soldagem por fricção por ponto (FSpW) de soldas de materiais similares e dissimilares de ligas leves |
title_sort |
Otimização do processo de soldagem por fricção por ponto (FSpW) de soldas de materiais similares e dissimilares de ligas leves |
author |
Piccolo, Debora Regina Gastaldi |
author_facet |
Piccolo, Debora Regina Gastaldi |
author_role |
author |
dc.contributor.authorlattes.por.fl_str_mv |
http://lattes.cnpq.br/3586398504200450 |
dc.contributor.author.fl_str_mv |
Piccolo, Debora Regina Gastaldi |
dc.contributor.advisor1.fl_str_mv |
Alcântara, Nelson Guedes de |
dc.contributor.advisor1Lattes.fl_str_mv |
http://genos.cnpq.br:12010/dwlattes/owa/prc_imp_cv_int?f_cod=K4783686Z9 |
dc.contributor.authorID.fl_str_mv |
a046c79d-f1a4-4724-9555-8ac6bd23f409 |
contributor_str_mv |
Alcântara, Nelson Guedes de |
dc.subject.por.fl_str_mv |
Soldagem FSpW Ligas de alumínio Ligas de magnésio |
topic |
Soldagem FSpW Ligas de alumínio Ligas de magnésio ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA |
dc.subject.cnpq.fl_str_mv |
ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA |
description |
Currently there is a lot of pressure in the aeronautical and automobilistic transport section in order to reduce the fuel consumption and consequently cost and gas emissions. This measure has increased in the last years the use of light alloys, as the alluminium s alloys and of more efficient methods for joining them. Nevertheless, there is some difficult in joining these alloys using the conventional methods. The Friction Spot Welding (FSpW) is a solid state joining technique, that has great advantages regarding others joining techniques, and therefore could be a viable alternative to replace the established technologies as Resistance Spot Welding (RSW) and riveting, which are widely used by the automotive industry. The present works aims to study, through the Friction Spot Welding process (FSpW), the similar welding conditions of AA5754-H111 aluminium alloy and also the dissimilar welds between AA5754-H111 aluminium alloy and AZ31-O magnesium alloy. The influence of process parameters over the microstructure and the mechanical properties of the welded joints, as well as, the optimization of the welding process were evaluated. The joints were produced in overlap configuration through a different combination of parameters, which were established by statistical methods for design of experiments, and later submitted to mechanical and metallurgical characterization. The results proved the feasibility of joining the similar and dissimilar plates of aluminium AA5754 and magnesium AZ31 through FSpW process. The similar joints showed great results of shear strength. However, in the dissimilar joints, the utilization of a zinc interlayer, in spite of leading to a great superficial finishing, didn t effectively decrease the amount of intermetallic compounds formed in the joint as it was expected, leading to low values of shear strength. |
publishDate |
2014 |
dc.date.available.fl_str_mv |
2014-10-06 2016-06-02T19:12:38Z |
dc.date.issued.fl_str_mv |
2014-08-07 |
dc.date.accessioned.fl_str_mv |
2016-06-02T19:12:38Z |
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.citation.fl_str_mv |
PICCOLO, Debora Regina Gastaldi. optimization of friction spot welding (FSpW) process of similar and dissimilar welds of light alloys. 2014. 116 f. Dissertação (Mestrado em Ciências Exatas e da Terra) - Universidade Federal de São Carlos, São Carlos, 2014. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufscar.br/handle/ufscar/930 |
identifier_str_mv |
PICCOLO, Debora Regina Gastaldi. optimization of friction spot welding (FSpW) process of similar and dissimilar welds of light alloys. 2014. 116 f. Dissertação (Mestrado em Ciências Exatas e da Terra) - Universidade Federal de São Carlos, São Carlos, 2014. |
url |
https://repositorio.ufscar.br/handle/ufscar/930 |
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openAccess |
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Universidade Federal de São Carlos |
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Programa de Pós-Graduação em Ciência e Engenharia de Materiais - PPGCEM |
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UFSCar |
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BR |
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Universidade Federal de São Carlos |
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