Next Article in Journal
Recycling Chain for Spent Lithium-Ion Batteries
Next Article in Special Issue
Influence of B and Nb Additions and Heat Treatments on the Mechanical Properties of Cu-Ni-Co-Cr-Si Alloy for High Pressure Die Casting Applications
Previous Article in Journal
Refining As-Cast Structures of Novel SixTiVCrZr High-Entropy Alloys Using Estimated Effective Solidification Temperature Obtained Using Chvorinov’s Rule
Previous Article in Special Issue
Characteristics and Formation Tendency of Freckle Segregation in Electroslag Remelted Bearing Steel
Open AccessArticle

Functionally-Graded Metallic Syntactic Foams Produced via Particle Pre-Compaction

Centre for Mass and Thermal Transport in Engineering Materials, School of Engineering, The University of Newcastle, Callaghan, NSW 2308, Australia
*
Author to whom correspondence should be addressed.
Metals 2020, 10(3), 314; https://doi.org/10.3390/met10030314
Received: 6 February 2020 / Revised: 21 February 2020 / Accepted: 24 February 2020 / Published: 28 February 2020
(This article belongs to the Special Issue Advances in Metal Casting Technology)
This paper introduces a novel functionally graded metallic syntactic foam. The investigated foams are manufactured while using infiltration casting where molten A356 aluminum flows into the interstitial voids of packed expanded perlite (EP) particle beds. The partial pre-compaction of particle beds enables the creation of distinct and reproducible density gradients within the syntactic foam. In this study, the samples are produced using four gradually increasing compaction forces and are compared to non-compacted samples. X-ray imaging is used to detect the resulting spatial variation of foam density. In addition, quasi-static compression tests are performed to determine the mechanical foam properties. The results suggest that particle pre-compaction is an efficient tool for tailoring the density and mechanical properties of these novel functionally graded materials. View Full-Text
Keywords: metallic syntactic foam; functionally graded; aluminum alloy; expanded perlite; mechanical properties metallic syntactic foam; functionally graded; aluminum alloy; expanded perlite; mechanical properties
Show Figures

Figure 1

MDPI and ACS Style

Fiedler, T.; Movahedi, N.; York, L.; Broxtermann, S. Functionally-Graded Metallic Syntactic Foams Produced via Particle Pre-Compaction. Metals 2020, 10, 314.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop