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On the mechanical properties of sintered metallic fibre structures

: Veyhl, C.; Fiedler, T.; Jehring, U.; Andersen, O.; Bernthaler, T.; Belova, I.V.; Murch, G.E.


Materials Science and Engineering, A. Structural materials, properties, microstructure and processing 562 (2013), S.83-88
ISSN: 0921-5093
ISSN: 1873-4936
Fraunhofer IFAM, Institutsteil Pulvermetallurgie und Verbundwerkstoffe Dresden ()

The present study investigates mechanical properties of a novel sintered metallic fibre structure with different relative densities (i.e. 0.19, 0.27, and 0.46). The compressive mechanical properties Young's modulus, Poisson's ratio and 0.2% offset yield stress are determined. For this purpose, state of the art simulations are performed based on the real material structure using micro-computed tomography images. Computed results are compared with experimental uni-axial compression tests and good agreement between both methods is observed. Numerical analysis allows the investigation of directional dependence and mechanical anisotropy is observed to be governed by the fibre orientation. In addition, Young's modulus and 0.2% offset yield stress increase with rising relative density.