Influence of particle arrangement on the compression of functionally graded metal syntactic foams

This study probes the systematic spatial variation of two different types of filler particles in Metal Syntactic Foams (MSFs). The particle distribution is utilized to fabricate longitudinal and radial functionally graded metal syntactic foams. In addition, MSFs containing a random mixture of the sa...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2019-09, Vol.764, p.138242, Article 138242
Main Authors: Movahedi, Nima, Conway, Stephen, Belova, Irina V., Murch, Graeme E., Fiedler, Thomas
Format: Article
Language:English
Subjects:
Activated carbon
Compression tests
Deformation mechanism
Deformation mechanisms
Edge dislocations
Energy absorption
Expanded perlite
Foamed metals
Functionally graded metal syntactic foam
Mechanical properties
Particle topology
Pressure casting
Shear bands
Syntactic foams
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Summary:This study probes the systematic spatial variation of two different types of filler particles in Metal Syntactic Foams (MSFs). The particle distribution is utilized to fabricate longitudinal and radial functionally graded metal syntactic foams. In addition, MSFs containing a random mixture of the same particles are tested. All samples are produced using a single step counter-gravity infiltration casting process. Quasi-static compression tests are performed to investigate the mechanical properties and deformation mechanisms of the resulting MSFs. The results indicate that MSF deformation is a combination of shear band and layer-by-layer modes. Moreover, functionally grading along the longitudinal direction yields the highest plateau stress and energy absorption.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2019.138242