Avaliação microestrutural via técnicas EBSD/EDS de revestimentos em Inconel 625 e do Inox 309L soldados pelo processo GMAW aplicados a dutos para transporte de petróleo, gás natural e biocombustíveis
Regions of oil exploration are prone to corrosion, which can lead to failures in pipelines and cause significant economic and environmental damage. To prevent these failures, a common solution consists of applying internal and/or external cladding to the pipelines, with welding being a widely use...
Na minha lista:
| Autor principal: | |
|---|---|
| Outros Autores: | |
| Formato: | bachelorThesis |
| Idioma: | pt_BR |
| Publicado em: |
Universidade Federal do Rio Grande do Norte
|
| Assuntos: | |
| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/55907 |
| Tags: |
Adicionar Tag
Sem tags, seja o primeiro a adicionar uma tag!
|
| Resumo: | Regions of oil exploration are prone to corrosion, which can lead to failures in pipelines
and cause significant economic and environmental damage. To prevent these failures,
a common solution consists of applying internal and/or external cladding to the
pipelines, with welding being a widely used cladding process in the petroleum industry.
Among the types of welding, Gas Metal Arc Welding (GMAW) is a technique used to
join dissimilar materials with high deposition rates and high speed. Nickel and
chromium alloys are often employed for anti-corrosion cladding, due to their high
corrosion resistance, fatigue resistance, mechanical properties, and good weldability.
However, variations in welding parameters can significantly affect the properties of the
cladding, especially in the interface region between the cladding and the base metal.
In this regard, this study aims to investigate the final microstructure of the weld
interface region by varying the welding parameters with active and inert gas, single
and double layers, of Inconel 625 and Inox 309L claddings deposited on low carbon
steel. For this purpose, microstructural analyses were conducted in the Heat Affected
Zone (HAZ) using Electron Backscatter Diffraction (EBSD) analysis in parallel with
chemical analysis (EDS) and Vickers microhardness testing to identify the influence of
microstructure on the region's final mechanical properties achieved. The results show
that welding parameters significantly affected the desired final mechanical properties,
and that the EBSD analysis technique is an important tool for assessing the
microstructure of the welding interface region. Therefore, this study highlights the
importance of considering welding parameters and using microstructural analysis
techniques to optimize the welding process and improve the quality of anti-corrosive
metallic claddings applied in the oil industry pipelines. |
|---|