Thermally induced microstructural changes of ferritic-austenitic stainlesssteels and their influence on residual stress

The construction of machinery and plant is making constant demands on mater ials to be used. Thereby, it is necessary that the materials used have to c omply with a wide range of application when strength and corrosion resistan ce are concerned. Regarding these points of view, the group of ferritic-aus tenitic duplex stainless steels has more and more established its own posit ion on the market. A characterization of microstructural changes of duplex stainless steel upon different thermal cycling as well as their influence o n the deformation behaviour and the residual stress shall represent the cen tral point of this elaboration. The intention is to define the correspondin g influence parameters as exactly as possible in order to create a basis fo r further modelling the correlations.