Tough, high-strength titanium alloys; methods of heat treating titanium alloys
US8262819B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 6, 2010 |
| Grant date | Sep 11, 2012 |
| Priority date | — |
| Expiry date | Jul 6, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/183
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present disclosure describes methods of heat treating Ti-based alloys and various improvements that can be realized using such heat treatments. In one exemplary implementation, the invention provides a method of forming a metal member that involves forming an alloy into a utile shape and cooling the alloy from a first temperature above a beta transus temperature of the alloy to a second temperature below the beta transus temperature at a cooling rate of no more than about 30° F./minute. If so desired, the alloy my be treated for a period of about 1-12 hours at about 700-1100° F. Titanium alloys treated according to aspects of the invention may have higher tensile strengths and higher fracture toughness than conventional wrought, mill-annealed Ti 64 alloy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.