Analyzing the scale of the bainitic ferrite plates by XRD, SEM and TEM
| Autor: | Belen Lopez-Ezquerra, Carlos Garcia-Mateo, Matthias Kuntz, Lucia Morales-Rivas, Rosalia Rementeria, Francisca García Caballero, José Antonio Jiménez |
|---|---|
| Přispěvatelé: | Ministerio de Economía y Competitividad (España), European Commission |
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Diffraction Materials science Micrograph Bainite Mechanical Engineering Metallurgy 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure Microstructural characterization Crystallite size 01 natural sciences Nanocrystalline material Plate thickness Mechanics of Materials Ferrite (iron) 0103 physical sciences General Materials Science Crystallite 0210 nano-technology Strengthening mechanisms of materials |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 1044-5803 |
| Popis: | Since the major strengthening mechanisms in nanocrystalline bainitic steels arise from the exceptionally small size of the bainitc ferrite plate, accurate determination of this parameter is fundamental for quantitative relating the microstructure to the mechanical properties. In this work, the thickness of the bainitic ferrite subunits obtained by different bainitic heat treatments was determined in two steels, with carbon contents of 0.3 and 0.7 wt.%, from SEM and TEM micrographs. As these measurements were made on 2D images taken from random sections, the method includes some stereological correction factors to obtain accurate information. Finally, the determined thicknesses of bainitic ferrite plates were compared with the crystallite size calculated from the analysis of X-ray diffraction peak broadening. Although in some case the values obtained for crystallite size and plate thickness can be similar, this study confirms that indeed they are two different parameters. The authors gratefully acknowledge the support of the European Research Fund for Coal and Steel, the Spanish Ministry of Economy and Competitiveness and the Fondo Europeo de Desarrollo Regional (FEDER) for partially funding this research under the contracts RFSR-CT-2014-00019 and MAT2013-47460-C5-1-P respectively. |
| Databáze: | OpenAIRE |
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