New alpha-beta titanium alloys are disclosed. The new alloys generally include 7.0-11.0 wt. % Al, and 1.0-4.0 wt. % Mo, wherein Al:Mo, by weight, is from 2.0:1-11.0:1, the balance being titanium, any optional incidental elements, and unavoidable impurities. The new alloys may realize an improved combination of properties as compared to conventional titanium alloys.

The present disclosure relates to new materials comprising Al, Ti, and Zr. The new materials may realize a single phase field of a hexagonal close-packed (hcp) solid solution structure immediately below the solidus temperature of the material. The new materials may include at least one precipitate phase and have a solvus temperature of at least 1240° C. The new materials may include 29.0-42.4 wt. % Al, 41.2-59.9 wt. % Ti, and 10.3-24.1 wt. % Zr. In one embodiment, the precipitate is selected from the group consisting of the L1.sub.0 phase, the Al.sub.2Zr phase, and combinations thereof. The new alloys may realize improved high temperature properties.

The present disclosure relates to methods of finishing extruded titanium alloy workpieces by generating an extruded near net shape workpiece, cooling the extruded near net shape workpiece to a cooled temperature below the beta transus temperature, and then rolling the extruded near net shape workpiece one or more times at a rolling temperature to yield a final shape workpiece with desired properties.

A method of forming an article from an α−β titanium including, in weight percentages, from about 2.9 to about 5.0 aluminum, from about 2.0 to about 3.0 vanadium, from about 0.4 to about 2.0 iron, and from about 0.2 to about 0.3 oxygen. The method comprises cold working the α−β titanium alloy.

The present invention provides a heat resistant titanium alloy sheet excellent in cold workability having high temperature strength characteristics better than JIS Class 2 pure titanium and having a cold workability and high temperature oxidation resistance equal to or better than that of JIS Class 2 pure titanium and a method of production of the same, that is, a heat resistant titanium alloy sheet excellent in cold workability characterized by comprising, by mass %, 0.3 to 1.8% of Cu, 0.18% or less of oxygen, 0.30% or less of Fe, and, as needed, at least one of Sn, Zr, Mo, Nb, and Cr in a total of 0.3 to 1.5%, and the balance of Ti and less than 0.3% of impurity elements and by a β-phase and Ti.sub.2Cu-phase being included in a volume percentage of 0 to 2% and, further, a method of production of that titanium alloy sheet characterized by performing the final annealing at 630 to 850° C. in temperature range or performing the hot-rolled sheet or coil annealing or intermediate annealing at 630 to 850° C. in temperature range and perform the final annealing after cold working at 600 to 630° C. in temperature.

Medical instruments, particularly, endodontic instruments with unique limited memory characteristics, and methods for making such instruments. One embodiment includes heat treating a finished endodontic instrument. A related embodiment includes electropolishing a finished endodontic instrument and then heat treating the endodontic instrument.

A method of refining a microstructure of a titanium material can include providing a solid titanium material at a temperature below about 400° C. The titanium material can be heated under a hydrogen-containing atmosphere to a hydrogen charging temperature that is above a β transus temperature of the titanium material and below a melting temperature of the titanium material, and held at this temperature for a time sufficient to convert the titanium material to a substantially homogeneous β phase. The titanium material can be cooled under the hydrogen-containing atmosphere to a phase transformation temperature below the β transus temperature and above about 400° C., and held for a time to produce α phase regions. The titanium material can also be held under a substantially hydrogen-free atmosphere or vacuum at a dehydrogenation temperature below the β transus temperature and above the δ phase decomposition temperature to remove hydrogen from the titanium material.

Disclosed is a titanium or titanium alloy plate rolled in one direction, wherein a lubricating film is coated on the surface and the coefficient of sliding friction of the lubricating film-coated surface is controlled to less than 0.15. The elongation (L-El) of the titanium or titanium alloy plate in the rolling direction and the r value (T-r) in the direction perpendicular to the rolling direction have the following relation (1).
(T-r)/(L-El)≧0.07  (1)

A method of making a light weight component is provided. The method including the steps of: forming a metallic foam core into a desired configuration; applying an external metallic shell to an exterior surface of the metallic foam core after it has been formed into the desired configuration; forming an inlet opening and an outlet opening in the external metallic shell in order to provide a fluid path through the metallic foam core; and injecting a thermoplastic material into the metallic foam core via the inlet opening.

A method and apparatus for forming an object by additive layer manufacturing. The method comprises: a) applying, by a heat source (4), heat to a portion of a surface of a workpiece (1) sufficient to melt said portion; b) adding material to the melted portion and moving the heat source (4) relative to the workpiece (1) whereby progressively to form a layer of material (10) on the workpiece (1); c) cooling the formed layer (10) to bring at least part of the layer (10) to a state of crystallisation, there producing a modified workpiece; d) peening, using a plurality of independently controllable impact treatment devices (7), the modified work-piece so as to plastically deform the cooled at least part of the layer (10); and repeating steps a) to d) as required whereby to form the object.