Functionally graded metal syntactic foam: fabrication and mechanical properties

Movahedi, Nima; Murch, Graeme E.; Belova, Irina V.; Fiedler, Thomas

Title: Functionally graded metal syntactic foam: fabrication and mechanical properties
Creator: Movahedi, Nima; Murch, Graeme E.; Belova, Irina V.; Fiedler, Thomas
Relation: Materials and Design Vol. 168, Issue 15 April 2019, no. 10762
Publisher Link: http://dx.doi.org/10.1016/j.matdes.2019.107652
Publisher: Elsevier
Resource Type: journal article
Date: 2019
Description: In this research study a novel functionally graded metal syntactic foam (FG-MSF) was manufactured using expanded perlite and activated carbon particles. A tailored arrangement of these fillers was infiltrated with ZA27 alloy in a single-step process. The structure of the FG-MSF contained two individual layers: ZA27/expanded perlite (EP-MSF) and ZA27/activated carbon (AC-MSF) syntactic foam. The density of these FG-MSFs varied between 2.11 and 2.15 g·cm⁻³. Microstructural studies confirmed that no relevant chemical reaction occurred within the foam, in particular in the vicinity of the particle-matrix interfaces. The mechanical properties of the produced FG-MSF were evaluated using quasi-static compression testing. The results showed that the deformation mechanism of the FG-MSF is a mixed mode and varies between the two different filler layers. The energy absorption of the FG-MSF sample was increased compared to uniform syntactic foams containing only a single particle filler.
Subject: functionally graded metal syntactic foam; expanded perlite; activated carbon; deformation mechanism; energy absorption
Identifier: http://hdl.handle.net/1959.13/1423236
Identifier: uon:37905
Identifier: ISSN:0264-1275
Language: eng
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