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- W3088141019 abstract "Due to the various structural and functional characteristics of lightweight, energy absorption, and sound/heat insulation, etc., metallic foam materials have been increasingly developed in recent years, especially for the most widely used alloy foams. Herein, the Al–Mg–Si alloy foams with a porosity of 60% are prepared by a powder metallurgy technology in which the carbamide is used as the space holder material. The effect of solution treatment on the microstructure, compressive property, and energy absorption response of the as‐prepared Al–Mg–Si alloy foams is studied. The results show that when the solution temperature ( T ) is increased from 25 to 555 °C, the room temperature compressive strength of the Al–Mg–Si alloy foams increases from 11.2 to 26.7 MPa, but decreases when T is more than 555 °C. The strengthening mechanisms of solution treatment mainly lie in that the dislocation movement between the grain boundaries can be effectively blocked by the precipitated phases. As to the high‐temperature compressive property of the Al–Mg–Si alloy foams that are solution treated at 555 °C, the compressive strength is found to decrease from 28.7 to 12.3 MPa when the compression temperature is elevated up to 250 °C. Correspondingly, the energy absorption decreases from 17.02 to 9.14 MJ m −3 . Compared to the pure Al foam, the high‐temperature softening effect for the Al–Mg–Si alloy foams is more remarkable, which is due to the formation of microcracks in the alloy matrix. The current research provides a cost‐effective and easy‐handle approach to enhance the compressive strength and energy absorption ability of the metallic foam materials." @default.
- W3088141019 created "2020-10-01" @default.
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- W3088141019 date "2020-10-15" @default.
- W3088141019 modified "2023-10-10" @default.
- W3088141019 title "Effect of Heat Treatment on the Microstructure, Compressive Property, and Energy Absorption Response of the Al–Mg–Si Alloy Foams" @default.
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- W3088141019 doi "https://doi.org/10.1002/adem.202000620" @default.
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