HEAT TREATMENT OF TI-FE SINTERED ALLOY

摘要

PURPOSE:To provide excellent tensile strength and elongation percentage,by subjecting a Ti-Fe alloy to heat treatment under specific conditions and by forming a metallic structure in which a new-precipitated phase separates out from a solid solution and forms into laminar state along the cleavage planes of solid solution grains. CONSTITUTION:A high-purity iron powder is added to a high-purity titanium powder by a specific weight percentage up to the eutectoid composition, and they are sufficiently blended. The resulting powder mixture is compacted and then sintered in a high-temp. vacuum furnace for a prescribed period. The resulting sintered compact is held at a temp. in a beta single phase temp. region for a prescribed period and then hardened. The above compact is further held at a temp. within an (alpha+beta) two phases temp. region for a prescribed period, which is hardened or is allowed to stand to be cooled.