AlFe2

AlFe2 is an intermetallic compound in the aluminum-iron system, characterized by a defined stoichiometric ratio that creates a hard, brittle phase distinct from conventional aluminum alloys. This material appears primarily in research and specialized industrial contexts rather than as a mainstream engineering alloy, where it functions as a strengthening phase in composite materials or appears in wear-resistant coatings and surface treatments. Its notable advantage over single-phase aluminum alloys is substantially increased hardness and thermal stability, though its brittleness limits use as a load-bearing component; engineers typically encounter it as a constituent phase in composite systems or as a thin functional layer rather than as a bulk material.