Microstructure and high temperature compressive deformation in lightweight open cell titanium foam

Abstract

Ti-foam of varying relative densities has been synthesis through the PM route using ABC as a space holder. Microstructure, cell size and cell wall were evaluated. The compressive deformation of Ti-foams samples with different relative densities was conducted at different temperatures. The yield stress, elastic modulus, energy absorption increases with increasing relative density and also decrease with increase testing temperature. Densification strain decreases with increasing relative density and testing temperature. The micro shear bands visible when deformed at 400–600 °C whereas at lower temperatures foam crumbled. It is due to improved ductility at a higher temperature.