Method of modifying the microstructure of titanium alloys...

Details Method of modifying the microstructure of titanium alloys... Method of modifying the microstructure of titanium alloys...

A - Human Necessities

61

L

A61L 27/06 (2006.01) C22F 1/14 (2006.01)

Patent

CA 2585908

A titanium alloy subjected to thermal treatment followed by quenching. The thermal treatment raises the temperature of the alloy to a temperature above the alloy's recrystallization temperature and below the alloy's beta-transus temperature to cause a phase shift within the alloy. After the thermal treatment has been applied for a predetermined time, the alloy is rapidly quenched, preserving the phase shift induced by the thermal treatment. By the present method, the microstructure of the titanium alloy is changed from a fine grained alpha-beta phase to a microstructure substantially comprised of an equiaxed alpha phase and an acicular or plate-like alpha phase. The resulting prostheses may have a microstructure including between 25% and 75% percent acicular alpha phase, for example.

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