Decomposition of the Ferritic Phase in Isothermally Aged SAF 2507 Duplex Stainless Steel

Tibor Berecz; István Mészáros; Péter János Szabó

doi:10.4028/www.scientific.net/MSF.589.185

Paper Titles

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Dynamic Phenomena during Sessile Drop Measurements due to Oxide Layer Disruption
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Mechanical and Electrical Testing of Electrically Conductive Silicone Rubber
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Decomposition of the Ferritic Phase in Isothermally Aged SAF 2507 Duplex Stainless Steel
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Examine of Mechanical Load of Silicone Rubber by Optical Methods
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Microstructural Changes due to Secondary Precipitation Hardening of Martensitic Creep Resistant Steel X20CrMoWV 12 1 (AISI 422)
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Electrical Examination of Silicon Nitride – Carbon Composites
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Infrared Examination of Electrically Conductor Si₃N₄ Nanocomposites
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HomeMaterials Science ForumMaterials Science Forum Vol. 589Decomposition of the Ferritic Phase in...

Decomposition of the Ferritic Phase in Isothermally Aged SAF 2507 Duplex Stainless Steel

Abstract:

Duplex stainless steels constitute a famous group of the stainless steels. They consist of mainly ferritic and austenitic phases. The ratio between these phases is regulated by numerous alloying elements and low content of carbon. Because of this strong alloying a lot of metallurgical processes can take place at high temperature, e.g. the decomposition of ferritic phase into σ-phase and secondary austenite. In this paper the changes of amounts of these three phases are studied by automated EBSD, saturation magnetization measurement, XRD-analysis and micro-hardness test. Similar results were obtained by the different applied measurements for the change of phase ratios due to the isothermal heat treatment.