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- Title
Cellular Energy Absorbing TRIP-Steel/Mg-PSZ Composite: Honeycomb Structures Fabricated by a New Extrusion Powder Technology.
- Authors
Martin, Ulrich; Ehinger, David; Krüger, Lutz; Martin, Stefan; Mottitschka, Thomas; Weigelt, Christian; Aneziris, Christos G.; Herrmann, Mathias
- Abstract
Lightweight linear cellular composite materials on basis of austenite stainless TRIP- (TRansformation Induced Plasticity-) steel as matrix with reinforcements of MgO partially stabilized zirconia (Mg-PSZ) are described. Two-dimensional cellular materials for structural applications are conventionally produced by sheet expansion or corrugation processes. The presented composites are fabricated by a modified ceramic extrusion powder technology. Characterization of the microstructure in as-received and deformed conditions was carried out by optical and scanning electron microscopy.Magnetic balance measurements and electron backscatter diffraction (EBSD) were used to identify the deformation-induced martensite evolution in the cell wall material. The honeycomb composite samples exhibit an increased strain hardening up to a certain engineering compressive strain and an extraordinary high specific energy absorption per unit mass and unit volume, respectively. Based on improved property-to-weight ratio such linear cellular structures will be of interest as crash absorbers or stiffened core materials for aerospace, railway, or automotive applications.
- Subjects
HONEYCOMB structures; AUSTENITIC stainless steel; ZIRCONIUM oxide; SCANNING electron microscopy; OPTICAL diffraction; MICROSTRUCTURE
- Publication
Advances in Materials Science & Engineering, 2010, p1
- ISSN
1687-8434
- Publication type
Article
- DOI
10.1155/2010/269537