Abstract
Effect of boron addition on structure and mechanical properties of FeAl-WC have been investigated. Elemental powders of iron, aluminum and boron powders have been used as starting materials for MA and mixed to give the desired composition of Fe-40at%Al+0-5 at%B. Boron addition leads to fine milled powders and improves mechanical properties of Fe-40at%Al compacts. Milled Fe-40 at%Al powders with 3at% B have been blended with WC powders and consolidated using pulse current sintering process at 1373-1473 K. 3at%B-added FeAI-50vol%WC has had high vickers hardness 1230 Hv and transverse rupture strength 1.77 GPa, while no B-added FeAl-50vol% WC has had 1080 Hv and 1.10 GPa respectively. This is caused by improvement of dispersion of WC paricles in FeAl matrix.
