The role of non-metallic Al2O3 inclusions, heat treatments and microstructure on the corrosion resistance of an API 5L X42 steel
Autor: | Monica Moreno, Luis Lozada, Julio Villavicencio, Nestor Ulloa, Lidia Castro |
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Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
lcsh:TN1-997
Materials science 02 engineering and technology 01 natural sciences Chloride Corrosion Biomaterials Metal chemistry.chemical_compound Carbon steel 0103 physical sciences medicine Pitting corrosion Polarisation lcsh:Mining engineering. Metallurgy 010302 applied physics Aluminium oxides Inclusion Mean value Metallurgy Metals and Alloys 021001 nanoscience & nanotechnology Microstructure Surfaces Coatings and Films chemistry visual_art Ceramics and Composites visual_art.visual_art_medium Aluminium oxide Hardening SEM–EDS 0210 nano-technology medicine.drug |
Zdroj: | Journal of Materials Research and Technology, Vol 9, Iss 3, Pp 5894-5911 (2020) |
ISSN: | 2238-7854 |
Popis: | The role of heat treatments, non-metallic aluminium oxide inclusions, and microstructure on the corrosion resistance of an API 5L X42 steel was examined in a 0.1 M chloride environment (pH ∼ 7). Energy Disperse Spectrometry analysis found aluminium oxide inclusions on as-rolled, annealed, normalised, quenched, and quenched plus tempered samples. Heat treatments changed the percentage of aluminium oxide inclusions in X42 steel. Annealed, normalised, quenched, and quenched plus tempered samples reached mean values of 0.15, 0.15, 0.12 and 0.07 percent respectively, whereas, rolled samples reached a mean value of 0.85 percent. It was found that the percentage of aluminium oxides did not affect the corrosion rate but promoted pitting corrosion. The average corrosion rate showed the following order in millimetres per year: as-rolled (0.067) |
Databáze: | OpenAIRE |
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