J045044 Investigation of compressive defomation behavior of three layer strucuture functionally graded porous aluminum

Abstract

Porous aluminum (porous Al) is a multifunctional material with lightweight and high energy absorption properties. Functionally graded (FG) porous Al is fabricated by combining different pore structures and Al alloy. In this study, pure Al(A1050)/Al-Mg-Si(A6061)/Al-Si-Cu(ADC12) FG porous Al of three layer structure was fabricated by friction stir welding route. Pore structures of A1050-A6061-ADC12 FG porous Al was observed nondestructively by X-ray computed tomography inspection. The compression properties and deformation behavior of A1050-A6061-ADC12 FG porous Al was obtained by compression test. It was shown that the fabricated A1050-A6061-ADC12 FG porous Al compressive test specimen had potential to exhibit three different deformation stages and three plateau regions corresponding to the uniform porous Al with A1050, A6061 and ADC 12.