# US 8,771,590 B2 · Titanium base alloy

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- Number: US 8,771,590 B2
- Document ID: US8771590B2
- Status: Granted
- Kind: B2
- Application number: 11/913,793
- Filed: 2006-05-06
- Published: 2008-09-04
- Granted: 2014-07-08
- Earliest claimed: 2005-05-16
- Assignees: VSMPO-AVISMA Corporation
- Applicants: Vladislav Valentinovich; Igor Vasilievich Levin; Igor Jurievich Puzakov
- Inventors: Vladislav Valentinovich; Igor Vasilievich Levin; Igor Jurievich Puzakov
- Web page: https://patentgrep.com/patent/US8771590B2

## CPC

- C22C 14/00: Alloys based on titanium
- C22F 1/183: {of titanium or alloys based thereon}
- C22C: ALLOYS (treatment of alloys C21D, C22F)
- C22F: CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS (surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by this subclass, C23F17/00)

## Abstract

The invention refers to the non-ferrous metallurgy, i.e. to the creation of the modern titanium alloys, having the high genericity. Titanium-base alloy contains aluminum, vanadium, molybdenum, chromium, iron, zirconium, oxygen and nitrogen. Herewith the components of the alloy have the following ratio by weight %; aluminun—4.0-6.0; vanadium—4.5-6.0; molybdenum—4.5-6.0; chromium—2.0-3.6; iron—0.2-0.5; zirconium—0.1-less than 0.7; oxygen—0.2 max; nitrogen—0.05 max; titanium—balance. Technical result—creation of the titanium alloy with the required strength and plastic properties. The alloy may be used to produce the wide range of the products including the large-size forgings and die-forgings as well as semiproducts of small section, such as bars and plates up to 75 mm thick.

## Claims

### Claim 1

Titanium-base alloy containing aluminum, vanadium, molybdenum, chromium, iron, zirconium, oxygen and nitrogen, and differing in the following selected composition, weight %:
Aluminum
4.0-6.0
Vanadium
4.5-6.0
Molybdenum
4.5-6.0
Chromium
2.0-3.6
Iron
0.2-0.5
Zirconium
0.2-0.5
Oxygen
max 0.2
Nitrogen
max 0.05
Titanium
bal.

### Claim 2 (depends on 1)

The alloy of claim 1 wherein the alloy has a fracture toughness of 69 MPa √m to 72 MPa √m.