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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Parrens, Coralie
Airbus (France)
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2020Oxidation of Ti–6Al–4V alloy between 450 and 600°C. Evolution of microstructure and mechanical propertiescitations
- 2020Oxidation of Ti–6Al–4V alloy between 450 and 600°C. Evolution of microstructure and mechanical propertiescitations
- 2019Effects of cooling path and resulting microstructure on the impact toughness of a hot stamping martensitic stainless steelcitations
- 2019Influence of M23C6 dissolution on the kinetics of ferrite to austenite transformation in Fe-11Cr-0.06C stainless steelcitations
- 2018Influence of Nb Addition on Impact Toughness of As-Quenched Martensitic Stainless Steel for Automotive Applicationscitations
- 2017Effet du vieillissement sur les propriétés de fluage de l'acier inoxydable austénitique 310S lors d'essais de fluage isothermes et non isothermes.
- 2017Isothermal and Cyclic Aging of 310S Austenitic Stainless Steelcitations
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article
Influence of Nb Addition on Impact Toughness of As-Quenched Martensitic Stainless Steel for Automotive Applications
Abstract
<jats:p>This study presents how Nb addition allowed improving the Charpy impact toughness of a martensitic stainless steel by comparing a conventional AISI410 (12%Cr-0.1%C) and a 12%Cr-0.1%C-0.1%Nb steel after the same austenitization and quenching heat treatment. Adding niobium decreased the ductile-to-brittle transition temperature by 100°C with respect to the Nb-free steel. To identify quantitative fracture criteria for the two materials, the values of critical cleavage fracture stress were determined by the local approach to fracture, combining low temperature tensile tests on notched specimens and mechanical analysis by the finite element method. The main effects of niobium were to refine the grain size and to promote retained austenite films, resulting in a similar resistance to cleavage crack initiation but in a strong improvement of the ductile-to-brittle transition behavior by increasing the resistance to cleavage crack propagation.</jats:p>