Titanium_gold
In metallurgy, titanium gold (Ti-Au or Au-Ti) refers to an alloy consisting of titanium and gold. Such alloys are used in dentistry,[1][2] ceramics and jewelry.[3] Like many other alloys, titanium gold alloys have a higher yield strength, tensile strength, hardness, and magnetism than either of its constituent metals.[4]
In July 2016, researchers led by Emilia Morosan at Rice University discovered that a titanium-gold alloy, β-Ti3Au, is an intermetallic alloy that is up to 4 times harder than pure titanium and most steels.[4][5][6]