High strength titanium material having improved ductility
US4886559A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Sep 1, 1988 |
| Grant date | Dec 12, 1989 |
| Priority date | — |
| Expiry date | Sep 1, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/183
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A high strength titanium material having an improved ductility, contains 0.1 to 0.8% by weight of iron, a required oxygen and nitrogen satisfying the following expression, in which an oxygen equivalence Q ranges from 0.35 to 1.0, EQU Q=[O]+2.77 [N]+0.1 [Fe] wherein PA0 [O] is an oxygen content % by weight PA0 [N] is a nitorgen content % by weight PA0 [Fe] is an iron content % bt weight the rest being titanium and inevitable impurities, the oxygen and nitrogen exists as interstitial type solute elements in the titanium material, and the titanium material exhibits a two phase, an equiaxed phase or a lamellar phase, fine grain microstructure and has a tensile strength of 65 kgf/mm.sup.2 or more, and a method for producing same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.