Method of manufacturing rolled titanium alloy sheets
US4581077A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1985 |
| Grant date | Apr 8, 1986 |
| Priority date | — |
| Expiry date | Apr 22, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B3/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of manufacturing a rolled titanium alloy sheet comprises breaking down an .alpha. or .alpha.+.beta. titanium alloy ingot into a slab, working the slab in sequential stages of PA0 (A) cross rolling the slab in the .alpha.+.beta. region under a condition of a reduction ratio of at least 1.2 and a cross rolling ratio of 0.6 to 1.4, PA0 (B) annealing the workpiece for recrystallization at a temperature 20.degree. to 100.degree. C., preferably 20.degree. to 70.degree. C., below the .beta.-transus of the alloy, and PA0 (C) further cross rolling it in the .alpha.+.beta. region under a condition of a reduction ratio of at least 1.6 and a cross rolling ratio of 0.6 to 1.4, and thereafter heat treating the rolled workpiece for annealing, solution treatment and aging or the like, depending on the intended use of the product. The method may include an additional stage (D) of repeating stages (B) and (C) at least once each. The ingot breakdown is preferably carried out by forging or rolling at a temperature of the two-phase .alpha.+.beta. region to a total draft of at least 30%. The heating prior to the hot rolling operations is preferably effected in an atmosphere at a partial pressur…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.