MISORIENTATION BETWEEN AUSTENITE AND <I>\sigma</I>-PHASE IN DUPLEX STAINLESS STEEL

Authors

  • Tibor Berecz
  • Péter J. Szabó

Abstract

Duplex steels are very interesting stainless steels. Their name originates from their special austenitic-ferritic structure. This tissue is due to the high alloying and low carbon content. During heat treatment, several phase transformation and precipitation processes take place. Electron back scattering diffraction is a relatively new investigation method, by which the individual grain orientation can be determined in the scanning electron microscope. The greatest advantage of this method is its speed: it is possible to determine a grain orientation even within 0.1 second. Therefore, in a relatively short time a large amount of data can be collected, and can be statistically evaluated. This paper reports a research work, in which SAF-2507 type duplex stainless steel samples were heat-treated isothermally, and the misorientation between the austenite and \sigma-phase was calculated.

Keywords:

duplex stainless steel, <I>\sigma</I>-phase, austenite, EBSD, misorientation

How to Cite

Berecz, T., J. Szabó, P. “MISORIENTATION BETWEEN AUSTENITE AND <I>\sigma</I>-PHASE IN DUPLEX STAINLESS STEEL”, Periodica Polytechnica Mechanical Engineering, 49(2), pp. 123–130, 2005.

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Section

Articles