Quasi-Static Compression Properties of Cold Isostatically Pressed Reactive Materials

Quasi-static compression experiments were performed on cylindrical specimens of cold isostatically pressed PTFE/Al/W reactive materials to study its mechanical response behavior and properties. The influences of density on Young modulus values of reactive materials were obtained by analyzing the quasi-static stress-strain curve at elastic deformation stage. The experimental results show that the ultimate compression strength and Young modulus of cold pressed PTFE/Al/W reactive materials present an increasing trend with the increase of reactive material density, and the cracks produced by quasi-static loads form in a range of angles from 30° to 45°. In addition, based on typical scanning electron microscope images of the uncompressed and compressed specimens with different density, it is showed that the number of force chains increases with an increasing reactive materials density, resulting in the increase of ultimate compression strength and Young modulus of reactive materials.