Compressive Properties and Failure Mechanisms of Gradient Aluminum Foams Prepared by a Powder Metallurgy Method

作者：Wenzhan Huang, Guangming Liu, Huaying Li, Fang Wang, Yanli Wang · 发表于：Metals · 年份：2021 · DOI：10.3390/met11091337 · 被引用次数：8 · 研究领域：Cellular and Composite Structures、Polymer Foaming and Composites、Polymer composites and self-healing

A layered gradient aluminum foam was prepared by powder sintering with sodium thiosulfate (Na2S2O3) particles as the cell-forming agent. By cutting, polishing and observing under a microscope, it was found that the aluminum powder particles were not completely melted after sintering but were only combined by surface melting. Based on the quasi-static compression test and the macroscopic diagram of the sample during deformation, the mechanical properties of gradient aluminum foam were studied, and their deformation characteristics and mechanism were analyzed and discussed.