About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Deformation Mechanisms, Microstructure Evolution, and Mechanical Properties of Nanoscale Materials
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Presentation Title |
Nanoindentation of Alumina and Multiphase Inclusions in 42CrMo4 Steel |
Author(s) |
Ruben Wagner, Robert Lehnert, Enrico Storti, Lisa Ditscherlein, Christina Schröder, Steffen Dudczig, Urs A. Peuker, Olena Volkova, Christos G. Aneziris, Horst Biermann, Anja Weidner |
On-Site Speaker (Planned) |
Ruben Wagner |
Abstract Scope |
Aiming to reduce nonmetallic inclusions in steels, a combined cleaning filter system was applied to 42CrMo4 steel causing formation of novel multiphase inclusions. These multiphase inclusions consist of TiO2-x and Al2O3 in a low-melting spessartine matrix and were characterized by nanoindentation, automated scanning electron microscopy (ASPEX), atomic force microscopy, focused ion beam technique and confocal laser scanning microscopy. Compared to pure Al2O3 inclusions, the spessartine multiphase inclusions are softer and have a lower Young’s modulus, fitting much better to the mechanical properties of the steel. The area below the indents was investigated by focused ion beam technique and transmission scanning electron microscopy revealing dislocations. Furthermore, the low-melting character of the spessartine matrix was proven by means of a confocal laser scanning microscope. Accordingly, the low-melting spessartine inclusions appear as liquid inclusions during steel melt processing and could contribute to clogging prevention in continuous steel casting. |
Proceedings Inclusion? |
Planned: |
Keywords |
Iron and Steel, Ceramics, |