Journal
MATERIALS LETTERS
Volume 287, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2020.129293
Keywords
Magnesium; Ceramics; Interface; Syntactic foam; Mechanical behavior
Funding
- European Regional Development Fund (EFRE)
- Ministry of Science, Research and the Arts (MWK) of the State of Baden-Wurttemberg within the research center ZAFH InSeL [32-7545.24-20/6/3]
- Janos Bolyai Research Scholarship of the Hungarian Academy of Sciences
- Hungarian National Research, Development and Innovation Office - NKFIH [2019-2.1.11-TET-2019-00058]
- NRDI Fund [BME-NC]
- Ministry for Innovation and Technology
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The compressive deformation characteristics of commercially pure magnesium-based syntactic foam were studied, and the influence of interface modification on the deformation behavior was analyzed. Different cooling conditions and heat treatments resulted in varying reaction zones and mechanical properties of the material.
The compressive deformation characteristics of a commercially pure magnesium-based syntactic foam, manufactured by infiltration technique, were investigated. The influence of the interface between the hollow spheres and the matrix on the deformation behavior was analyzed. The interface was modified by using two different cooling conditions with (a) quenching after the complete infiltration and (b) cooling down in the casting machine, and by (c) an additional heat treatment after (a): normalizing at 500 degrees C for 120 min. It has been found that in each condition a reaction zone formed, which consisted of a depleted layer in the hollow sphere and an interface layer in the Mg matrix with gradually changing composition. Condition (a) resulted in the highest peak strength, while condition (c) leads to the formation of micropores, causing the decrease of the stiffness and peak strength. (C) 2020 Elsevier B.V. All rights reserved.
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