Friction surfacing of aluminum alloy 5083-H112 over AA 2024-T3
Friction surfacing (FS) is an advanced solid-state process in surface modification with increasing applications in reclaiming worn parts, hardfacing and corrosion protection. It is considered a derivation of the friction stir welding process, keeping many benefits of the primary process such as: sol...
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| Tipo de recurso: | tesis de maestría |
| Estado: | Versión publicada |
| Fecha de publicación: | 2018 |
| País: | Brasil |
| Institución: | Universidade Federal de São Carlos (UFSCAR) |
| Repositorio: | Repositório Institucional da UFSCAR |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.ufscar.br:20.500.14289/10567 |
| Acceso en línea: | https://repositorio.ufscar.br/handle/20.500.14289/10567 |
| Access Level: | acceso abierto |
| Palabra clave: | Deposição por fricção AA 5083 AA 2024 Friction surfacing Solid state Aluminium ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA::METALURGIA DE TRANSFORMACAO::SOLDAGEM |
| Sumario: | Friction surfacing (FS) is an advanced solid-state process in surface modification with increasing applications in reclaiming worn parts, hardfacing and corrosion protection. It is considered a derivation of the friction stir welding process, keeping many benefits of the primary process such as: solid phase, forged microstructure and excellent metallurgical bond. As no melting takes place, the process allows dissimilar joining of materials while avoiding several fusion related problems. The present study addresses the deposition of AA5083-H112 coatings over AA2024-T3 substrates, focusing on the influence of the thermo-mechanical process in the mechanical properties and geometry of the deposits. A performance and geometric analysis of the depositions are also presented. Sound aluminum coatings were produced; plastic deformation and heat generation promotes a dynamic recrystallization of the anisotropic consumable rod, resulting in a fine and homogeneous deposit, free of any previous deformation. The coating presented an increase in ultimate tensile strength and failure deformation of 9% and 6%, respectively. Deposition efficiency between 25 and 50% were obtained, with a maximum of 48% average efficiency observed with 800RPM, 12kN and 16mm/s. |
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