Abstract
Open-cell Zn-22Al foams with different porosities were fabricated by replication process using spheroidal CaCl2 particles as space holder. A series of compressive tests were carried out at different temperatures (i.e., room temperature, 100 °C and 200 °C). The effect of porosity and testing temperature on compressive property and energy absorption characteristic of Zn-22Al foams were studied. The experimental results showed that the compressive properties of the foams are dependent on porosity and testing temperature: the compressive yield stress decreases with the increasing testing temperature and the porosity; In addition, the energy absorption capacity also decreases with the increasing temperature and porosity; Moreover, Gibson-Ashby model can be used to describe the relationship between relative yield stress and relative density of the foams.
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