The present invention relates to a turbine engine part including a titanium-based alloy presenting a high level of work hardening, a high breaking load, and good ductility.

The present disclosure relates to a titanium or titanium alloy member and to a surface hardening method for the titanium or titanium alloy member. The titanium or titanium alloy member includes a base material of titanium or titanium alloy, and at a surface of the base material, a hardened layer formed by diffusion of oxygen into the surface.

A method for brazing a metal part onto a surface of a zirconia component. The method involves the steps of altering the surface state of the component to permit the attachment of a first metallization layer, cleaning the component to eliminate the impurities from its surface, depositing a first metallization layer, having mainly titanium, on the surface of the component, depositing a second metallization layer, having mainly niobium, on the first metallization layer, applying the part against the second metallization layer, depositing a gold brazing metal on the part and the second metallization layer, cooling the brazed area in a temperature-controlled manner, and stress-relieving heat treatment being performed under load on the metal part before brazing.

The disclosure relates to a titanium alloy, in particular to be used for biocompatible implants, which contains no aluminum (Al), vanadium (V), cobalt (Co), chromium (Cr), nickel (Ni) and tin (Sn) and contains at least the following alloy components in wt % in addition to inevitable trace amounts of impurities contained in the alloy components or absorbed during the production: a) 0.2 to 1.5% oxygen (O), b) 0.1 to 1.5% iron (Fe), c) 0.01 to 2% carbon (C), d) the remainder being titanium (Ti).

The present invention provides a superelastic alloy containing Au in an amount of 8.0% by mass or more and 20.0% by mass or less and at least one of Cr and Mo as essential additive elements, Ta as an optional additive element, and Ti and inevitable impurities as a balance, wherein the Cr equivalent calculated on the basis of the following formula for the relationship of the Cr content, the Mo content and the Ta content is within the range of more than 0.5 and less than 8.0. The alloy is a Ni-free superelastic alloy, and has favorable X-ray-imaging property. Accordingly, the alloy can be suitably used in medical fields.

Cr equivalent=[Cr content (% by mass)]+([Mo content (% by mass)]/1.7)+([Ta content (% by mass)]/15)   [Formula 1]

Disclosed is a method for producing a blade for a turbomachine, which method comprises: providing a blade root, having a first platform region, from a first material; providing on the first platform region at least one capsule that is filled with a metallic and/or ceramic powder that comprises at least one second material which is different from the first material, for producing a blade airfoil having a second platform region; producing and shaping a blade airfoil from the capsule that is filled with the powder by at least one thermal input method, thereby connecting the blade root to the blade airfoil in respective platform regions.

Also disclosed is a blade which is obtainable and/or obtained by this method.

The present invention provides an α+β type titanium alloy and a production method therefor, which has an ultrafine structure causing superplasticity under low temperatures and has a high deformation ratio compared to conventional α+β type Ti alloys. The alloy has an ultrafine structure made of equiaxial crystals in which an area ratio of crystals having a grain diameter of 1 μm or less is 60% or more, and maximum frequency grain diameter is 0.5 μm or less, wherein a portion in which the integration degree of plane orientation of the hexagonal close-packed crystal is 1.00 or more exists within a range of 0 to 60 degrees with respect to a normal line of a processed surface of the alloy.

Provided is a titanium cast product for hot rolling made of commercially pure titanium, the titanium cast product including a melted and resolidified layer in a range of more than or equal to 1 mm in depth on a surface serving as a rolling surface, the melted and resolidified layer being obtained by adding one or more elements out of any one of or both of at least one α stabilizer element and at least one neutral element to the surface, and melting and resolidifying the surface. An average value of a total concentration of the at least one α stabilizer element and the at least one neutral element in the range of more than or equal to 1 mm in depth is higher than a total concentration of the at least one α stabilizer element and the at least one neutral element in a base metal by, in mass %, more than or equal to 0.1% and less than 2.0%.

New beta-style (bcc) titanium alloys are disclosed. The new alloys generally include 4-8 wt. % Al, 4-8 wt. % Nb, 4-8 wt. % V, 1-5 wt. % Mo, optionally 2-6 wt. % Cr, the balance being titanium, optional incidental elements, and unavoidable impurities. The new alloys may realize an improved combination of properties as compared to conventional titanium alloys.

New beta-style (bcc) titanium alloys are disclosed. The new alloys generally include 2.0-6.0 wt. % Al, 4.0-12.0 wt. % V, and 1.0-5.0 wt. % Fe, 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.