1 Max-Planck-Institut für Eisenforschung, ThyssenKrupp Advances in the optimization of thin strip cast austenitic 304 stainless steel microstructures D. Raabe1), R. Degenhardt2), R. Sellger2), B. Sander1), W. Klos2), M. Sachtleber2), L. Ernenputsch2) Max-Planck-Institut für Eisenforschung, Max-Planck-Str. 1, 40237 Düsseldorf, Germany 2) ThyssenKrupp Nirosta GmbH, 47797 Krefeld, Germany
Austenitic 304 stainless steels can be produced by thin strip casting, in-line hot rolling, and subsequent heat treatment with equivalent mechanical properties and even better microstructure homogeneity than steels produced by the conventional thick slab processing route.
The formation of deformation-induced α‘ martensite in austenitic stainless steels produced by the thin strip casting route is similar as in conventionally produced 304 steels.
Precise characterization of the different phases, interfaces, and crystallographic textures can be conducted by using a high resolution EBSD method.
references D. Raabe, M. Hölscher, F. Reher, K. Lücke: Scripta Metall. 29 (1993) 113116, Textures of strip cast Fe-16% Cr D. Raabe, M. Hölscher, M. Dubke, H. Pfeifer, H. Hanke, K. Lücke: Steel Research 4 (1993) 359363, Texture development of strip cast ferritic stainless steels D. Raabe, K. Lücke: Mater. Sc. Techn. 9 (1993) 302312, Textures of ferritic stainless steels D. Raabe: Metal. Mater. Trans. A 26A April (1995) 991998, Microstructure and crystallographic texture of strip cast and hot rolled austenitic stainless steel D. Raabe: Mater. Sc. Techn. 11 (1995) 461468, Textures of strip cast and hot rolled ferritic and austenitic stainless steel D. Raabe: Acta Mater. 45 (1997) 11371151, Texture and microstructure evolution during cold rolling of a strip cast and of a hot rolled austenitic stainless steel D. Raabe, R. Degenhardt, R. Sellger, W. Klos, M. Sachtleber, L. Ernenputsch: Steel Res. Int. 79 (2008) 440-444, Advances in the optimization of thin strip cast austenitic 304 stainless steel microstructures 21