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Microstructure and compression strength of novel TRIP-steel/Mg-PSZ composites

 
: Biermann, H.; Aneziris, C.G.; Kolbe, A.; Martin, U.; Müller, A.; Schärfl, W.; Herrmann, M.

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Fulltext (PDF; )

Journal of physics. Conference series 240 (2010), No.1, Art.012099, 4 pp.
ISSN: 1742-6588
ISSN: 1742-6596
Internatinal Conference on the Strength of Materials (ICSMA) <15,2009, Dresden>
English
Journal Article, Conference Paper, Electronic Publication
Fraunhofer IKTS ()

Abstract
A novel steel-based composite material, composed of metastable austenitic stainless steel as matrix and up to 15% zirconia as reinforcement, is processed by two powder metallurgy routes. The matrix exhibits the so-called TRIP-effect (TRIP: TRansformation-Induced Plasticity) and shows a deformation-induced formation of martensite. Compression tests of rod samples processed by cold isostatic pressing show increased strength compared to the non-reinforced steel matrix up to 20% strain. Three-point bending tests show, however, reduced ductility for high zirconia contents. Filigree honeycomb structures were produced by a novel extrusion technique with extraordinary high values of specific energy absorption.

: http://publica.fraunhofer.de/documents/N-143584.html