Analysis of the Visual Appearance of AISI 430 Ferritic Stainless Steel Flat Sheets Manufactured by Cool Rolling and Bright Annealing
| Autor: | Eduardo Blanco, Enrique Gallero, Andrés Núñez, Milagrosa Ramírez del Solar, Juan M. González-Leal, Juan F. Almagro |
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| Přispěvatelé: | Física de la Materia Condensada |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Mining engineering. Metallurgy 05 social sciences Metals and Alloys TN1-997 050301 education 020207 software engineering 02 engineering and technology Surface finish Light scattering Root mean square Wavelength surface metrology Surface metrology ferritic stainless steel 0202 electrical engineering electronic engineering information engineering Surface roughness colorimetry General Materials Science visual appearance Diffuse reflection Composite material Anisotropy 0503 education bright annealing |
| Zdroj: | Metals 2021, 11(7), 1058 RODIN. Repositorio de Objetos de Docencia e Investigación de la Universidad de Cádiz instname Metals, Vol 11, Iss 1058, p 1058 (2021) Metals Volume 11 Issue 7 |
| Popis: | This article reports on the relation between the surface topography and the optical reflectance, both total and diffuse, of different samples of AISI 430 ferritic stainless steel. Gaussian filters with different cutoff wavelengths were applied to the height maps of the surface topography of the samples, to separate the different scales of surface roughness involved in optical scattering in the visible range of the spectrum. Significant anisotropy, related to the rolling process, was found in the topography. An effective roughness slope parameter was defined from the dependence of the ratio between the root mean square height and the autocorrelation length on the cutoff wavelength. This roughness slope demonstrated an exceptionally good linear relationship with CIE 1931 luminance, which was calculated from the diffuse reflection spectra. The color uniformity of the samples was analyzed based on their CIE L*a*b* coordinates under daylight and LED illumination. The results confirmed the strong influence of manufacturing process on the surface characteristics of AISI 430 ferritic stainless steel sheet products with a bright finish. This work was co-financed by the 2014-2020 ERDF Operational Programme and by the Department of Economy, Knowledge, Business and University of the Regional Government of Andalusia. Project reference: FEDER-UCA18-106321. |
| Databáze: | OpenAIRE |
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