HIGH STRENGTH,LOW MODULUS,DUCTILE BIOCOMPATIBLE TITANIUM ALLOY

摘要

A high strength, low modulus, ductile, biocompatible titanium base alloy, characterized by a modules of elasticity not exceeding 100 GPa and consisting of up to 24% by weight of at least one isomorphous beta stabilizer selected from the group consisting of molybdenum, tantalum, niobium and zirconium, up to 3.0% by weight of at least one eutectoid beta stabilizer selected from the group consisting of iron, manganese, chromium, cobalt and nickel, wherein the combined amount of isomorphous beta stabilizer and eutectoid beta stabilizer is at least 10.2% by weight; optionally up to 3.0% by weight of at least one metallic alpha stabilizer selected from the group consisting of aluminum and lanthanum; and the balance titanium, apart from incidental impurities. A method for the preparation of said alloy, including a vacuum arc remelting step, is also disclosed.