TY - JOUR A2 - Pilone, Daniela AU - Byakova, Alexandra AU - Gnyloskurenko, Svyatoslav AU - Vlasov, Andrey AU - Semenov, Nikolay AU - Yevych, Yan AU - Zatsarna, Oleksandra AU - Danilyuk, Vladimir PY - 2019 DA - 2019/05/02 TI - Effect of Cell Wall Ductility and Toughness on Compressive Response and Strain Rate Sensitivity of Aluminium Foam SP - 3474656 VL - 2019 AB - The study presents the effect of cell wall ductility and toughness on the compressive behaviour of closed-cell Al foams under static and dynamic loading and localised deformation by indentation. Two kinds of Al alloys including relatively ductile AlSiMg alloy and high-strength AlZnMg alloy, which comprises a great amount of brittle eutectic domains, were used as matrix materials. Both kinds of Al foams were fabricated via newly developed melt processing using the CaCO3-foaming agent without Ca additive. Mechanical behaviour of Al foams under quasi-static compression and indentation was examined and compared with that performed under dynamic loading using direct impact tests. Characteristic events revealed in deformation patterns of Al foams at quasi-static compression were also monitored with the CCD camera. Significant differences in stress-strain response and strain rate sensitivity of Al foams arose from the difference in the microstructure, and hence, ductility and toughness of the cell wall material were investigated and discussed. SN - 1687-8434 UR - https://doi.org/10.1155/2019/3474656 DO - 10.1155/2019/3474656 JF - Advances in Materials Science and Engineering PB - Hindawi KW - ER -