Surpassing the Theoretical Limit of Porosity in Conventional Solid-State Foaming: Microstructure Characterization of Length Scales in a Copper Metal Foam
Final rept. Nov 2012-Nov 2014
ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
Pagination or Media Count:
Solid-state processes for creating metal foams are often complex andor time consuming, and in methods such as gas entrapment, there are practical limits to the porosity achievable due to pore coalescence and percolation. A simple process has been developed to create copper-based metal foam with porosity greater than 65. The process is unique as expansion occurs within particles, not between them. The method is applied to create a bulk part. The microstructure length scales of the foamed particles are examined using 1- and 2-point microstructure statistics.
- Metallurgy and Metallography