Titanium alloy products and methods for their production
US5792289A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1996 |
| Grant date | Aug 11, 1998 |
| Priority date | — |
| Expiry date | Jun 28, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C8/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A titanium alloy product having good tribological properties without the need to introduce an alloying element into the surface is produced by casting or casting and forging a titanium alloy consisting of 2 to 15% by weight silicon or 5 to 15% by weight nickel, 0 to 7% by weight of at least one strengthening element selected from aluminum, tin, zirconium, chromium, manganese, iron, molybdenum and niobium, and 0 to 2% by weight of a surface improving alloying element selected from boron, carbon, nitrogen, oxygen, and zirconium, the balance apart from impurities and incidental ingredients being titanium. Such alloy is then surface treated by surface melting and rapid solidification so as to produce a hard, wear-resistant surface layer without substantially affecting the bulk properties of the alloy. In another aspect, titanium alloy product which is resistant to both to rolling contact fatigue and to scuffing comprises casting or casting and forging a titanium alloy which is preferably of the above type, to the required product shape, deep surface hardening the resultant shaped product to a depth greater than 100 .mu.m by localized re-melting without further alloying, optionally surf…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.