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首页> 外文会议>International Conference on Powder Metallurgy amp; Particulate Materials vol.2; 20050619-23; Montreal(CA) >PROCESSING AND PROPERTIES OF IRON-BASED METALLIC FOAMS
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PROCESSING AND PROPERTIES OF IRON-BASED METALLIC FOAMS

机译：铁基金属泡沫的加工与性能

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摘要

A process based on a powder metallurgy approach was developed to produce open-cell metallic foams. A metallic powder, a solid polymeric binder and a chemical foaming agent are dry-mixed together. The molded mixture is then heat-treated in a three-step thermal treatment including foaming, debinding and sintering. This paper describes the microstructure and properties of iron-based foams (pure Fe and Fe-1.05%C) obtained with this process. The final material is highly porous (90% porosity) and has an interconnected porosity network. The structure of the resulting material is relatively complex and has 3 levels of porosity (i.e. main cells, windows and microporosity). The compressive mechanical properties are affected by the density and composition of the material. Compressive properties (i.e. compressive yield strength, modulus, energy absorbed at densification) increase with density. In addition, the compressive yield strength and energy absorbed at densification increase significantly while the modulus is little affected by the carbon content. The material structure and properties are interesting for light weight structures and energy absorption. The process is relatively simple and the materials produced provide a low cost alternative to aluminum foams.
机译：开发了一种基于粉末冶金方法的方法来生产开孔金属泡沫。将金属粉末，固体聚合物粘合剂和化学发泡剂干混在一起。然后将模制混合物以三步热处理进行热处理，包括发泡，脱脂和烧结。本文介绍了用此方法获得的铁基泡沫塑料（纯铁和铁-1.05％C）的微观结构和性能。最终材料是高度多孔的（孔隙率为90％），并具有互连的孔隙网络。所得材料的结构相对复杂并且具有3个水平的孔隙度（即主孔，窗口和微孔度）。压缩机械性能受材料的密度和组成影响。压缩性质（即压缩屈服强度，模量，在致密化时吸收的能量）随密度增加。另外，压缩屈服强度和在致密化时吸收的能量显着增加，而模量几乎不受碳含量的影响。材料结构和性质对于轻质结构和能量吸收是令人感兴趣的。该方法相对简单，并且所生产的材料提供了泡沫铝的低成本替代品。

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