Bars of metallic composite material made by unidirectional solidification
US4459161A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1981 |
| Grant date | Jul 10, 1984 |
| Priority date | — |
| Expiry date | Sep 30, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C47/08
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method and apparatus for manufacturing bars made of an alloy by unidirectional solidification. The mold is moved relative to a hot source and a cold source disposed below the hot source. The relative positions of the two sources as well as their efficiency and the displacement speed of the mold are set so that there is established within the alloy contained in the mold a planar solidification front with a high thermal gradient at the level of the front, and so that there is produced an orientation of the structure of the alloy which is perpendicular to the solidification front. During the whole duration of the solidification, the mold is fed with alloy powder having the required nominal composition at the rate corresponding to the quantity of alloy solidified per unit of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.