Quasi-State Compressive Properties of Functionally Graded Aluminum Matrix Syntactic Foams

Ming Ming Su; Mo Qiu Li; Thomas Fiedler; Hai Hao

doi:10.4028/www.scientific.net/MSF.1035.878

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HomeMaterials Science ForumMaterials Science Forum Vol. 1035Quasi-State Compressive Properties of Functionally...

Quasi-State Compressive Properties of Functionally Graded Aluminum Matrix Syntactic Foams

Abstract:

The uniform aluminum matrix syntactic foams (SFs) were prepared by the stir casting method, with alumina hollow spheres (2-3 mm and 3-4 mm) and expanded glass (2-3 mm) as reinforcements, and ZL111 aluminum alloy as matrix. The functionally graded aluminum matrix syntactic foams (FG-SFs) were obtained by superimposing two uniform aluminum matrix syntactic foams. Quasi-static compression tests were performed. The plateau stress of FG-SFs containing only hollow spheres decreased slightly with increasing volume fraction of SF containing 3-4 mm hollow spheres. The FG-SFs containing 2-3 mm hollow spheres and 2-3 mm expanded glass showed the highest plateau stress. The energy absorption behavior of all samples fluctuated in a small range. The initial position of shear band depended on the volume fraction of uniform aluminum matrix syntactic foams, reinforcement type and size. The cracks always appeared first in the uniform aluminum matrix syntactic foams containing expanded glass.

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Materials Science Forum (Volume 1035)

Pages:

878-883

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https://doi.org/10.4028/www.scientific.net/MSF.1035.878

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Online since:

June 2021

Authors:

Ming Ming Su, Mo Qiu Li, Thomas Fiedler, Hai Hao*

Keywords:

Alumina Hollow Sphere, Deformation Behavior, Expanded Glass, Functionally Graded Aluminum Matrix Syntactic Foam

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