Titanium alloy treatment process and resulting article

Details Titanium alloy treatment process and resulting article Titanium alloy treatment process and resulting article

1989-04-21

1990-05-08

Lechert, Jr., Stephen J.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

419 2, 419 23, 419 25, 419 29, 419 36, 419 53, 419 54, 419 55, 420420, 1481261, 148421, C22C 104

Patent

active

049235133

ABSTRACT:
A carefully controlled amount of hydrogen is diffused into titanium or its alloys at an elevated temperature above the transformation temperature. After the elevated temperature is maintained for an approprate duration of time, eutectoid transformation is performed in an inert atmosphere, again for an appropriate period of time, during which or alternatively after which the hydrogen is removed and the metal cooled to room temperature. A sintered titanium alloy component of the type intended for use as a joint replacement subjected to such a treatment displays a fatigue strength which is noticeably improved over a similar article with an equiaxed or lamellar microstructure.

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