In situ monitoring of isothermal phase transformation in two Nb stabilized austenitic stainless steels (316Nb) by neutron diffraction
| Autor: | F. Cortial, B. Marini, Jean-Marc Joubert, Ph. Petit, Florence Porcher, Gilles André, W. Jolly, Caroline Toffolon-Masclet, S. Ringeval |
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| Přispěvatelé: | Service des Recherches Métallurgiques Appliquées (SRMA), Département des Matériaux pour le Nucléaire (DMN), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Chimie métallurgique des terres rares (CMTR), Centre National de la Recherche Scientifique (CNRS), Laboratoire Léon Brillouin (LLB - UMR 12), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), CESMAN - DCNS Research, Aubert & Duval-Usine des Ancizes (A&D Les Ancizes), Aubert & Duval (A&D), VALDUC (DAM/VALDUC), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
In situ Austenite Materials science Rietveld refinement Mechanical Engineering Neutron diffraction Kinetics Metals and Alloys Analytical chemistry 02 engineering and technology [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology 01 natural sciences Isothermal process Crystallography Mechanics of Materials 0103 physical sciences Materials Chemistry 0210 nano-technology ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Journal of Alloys and Compounds Journal of Alloys and Compounds, 2016, 688, pp.695-702. ⟨10.1016/j.jallcom.2016.07.244⟩ Journal of Alloys and Compounds, Elsevier, 2016, 688, pp.695-702. ⟨10.1016/j.jallcom.2016.07.244⟩ |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2016.07.244⟩ |
| Popis: | In this study, neutron diffraction measurements have been performed to study the phase transformations taking place during isothermal treatments of two 316Nb type austenitic stainless steels with different δ ferrite content. Kinetics of phase transformations during heating, isothermal hold at 900 °C and cooling have been monitored and the phase fractions quantified using Rietveld refinements. Two main transformation mechanisms are evidenced and quantified: the δ ferrite transformation into σ phase and austenite and the σ phase precipitation inside the austenitic matrix. Furthermore, the joint use of X-ray and neutron diffraction on a powder residue obtained by electro-etching extraction allowed determining the σ phase, δ ferrite and Nb(N,C) weight fractions as well as the precise N and C contents of the carbo-nitrides and the site occupancies in the σ phase. |
| Databáze: | OpenAIRE |
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