Process for improving the heat resistance of zirconium and its alloys
US4108687A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 1976 |
| Grant date | Aug 22, 1978 |
| Priority date | — |
| Expiry date | Dec 2, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S376/90
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for treating zirconium and zirconium alloys, in particular the zirconium alloys used in nuclear reactors which are water cooled, as a structural or casing material for fuels. The method consists in dissolving or maintaining a solid solution of the majority of carbon contained in these alloys by thermal or thermo-mechanical treatments carried out in the .alpha. + .beta. range or if necessary in the .beta. range followed by a rolling in .alpha. phase if necessary. The products obtained have a highly improved mechanical resistance under heat, in particular with regard to resistance to creep; they are particularly suitable for constructing casing tubes for fuels in water cooled nuclear reactors having a better resistance to distortion in relation to time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.