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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
engineering
Effect of solution treatment temperature on the precipitation kinetic of σ-phase in 2205 duplex stainless steel welds
Materials Science and Engineering: A, Volume 496, No. 1-2, Year 2008
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Description
The effect of the prior solution treatment temperature on the δ-ferrite transformation in 2205 duplex stainless welds after aging at 850 °C has been studied. Microstructural examination showed that the σ-phase and M23C6 chromium carbides precipitate at the δ/γ interfaces and within the δ-ferrite grains. Increasing the solution treatment temperature from 1050 to 1250 °C delays the σ-phase formation and favours the precipitation of intragranular secondary austenite γ2. The simulation of the σ-phase precipitation kinetic in the base metal, HAZ and weld metal, indicates a good agreement between the experimental fitted data and the modified Johnson-Mehl-Avrami model. The results indicate a marked sensitivity of the σ-phase precipitation kinetic to the solution treatment temperature. A high precipitation rate corresponds to a fine grained structure with ferrite enriched in σ forming elements (Cr, Mo). © 2008 Elsevier B.V. All rights reserved.
Authors & Co-Authors
Badji, Riad
France, Villetaneuse
Laboratoire Des Sciences Des Procédés et Des Matériaux
Algeria, Cheraga
Centre Recherche Scientifique et Technique en Soudage et Contrôle
Bouabdallah, Mabrouk
Algeria, Algiers
Ecole Nationale Polytechnique
Bacroix, Brigitte
France, Villetaneuse
Laboratoire Des Sciences Des Procédés et Des Matériaux
Kahloun, Charlie
France, Villetaneuse
Laboratoire Des Sciences Des Procédés et Des Matériaux
Bettahar, K.
Algeria, Cheraga
Centre Recherche Scientifique et Technique en Soudage et Contrôle
Kherrouba, Nabil
Algeria, Algiers
Ecole Nationale Polytechnique
Statistics
Citations: 126
Authors: 6
Affiliations: 3
Identifiers
Doi:
10.1016/j.msea.2008.06.024
ISSN:
09215093