Process for manufacturing an article made of an oxide-dispersion-strengthened alloy
US6042662A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 18, 1998 |
| Grant date | Mar 28, 2000 |
| Priority date | — |
| Expiry date | Jun 18, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/10
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This process makes it possible to manufacture articles of any shape by stamping, in which articles the matrix of the alloy has to have a coarse-grained structure. According to the invention, a partial hot-forming operation is carried out by stamping a blank made of an oxide-dispersion-strengthened alloy, especially a nickel-based alloy, having an initial ultrafine-grained structure, in order to form a shaped component, this shaped component is subjected to a secondary recrystallization heat treatment so as to develop an abnormal grain growth, and then a new hot-forming operation is carried out by stamping in order to give the recrystallized shaped component the final shape of the article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.