Heat treated single crystal articles and process
US4328045A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 1980 |
| Grant date | May 4, 1982 |
| Priority date | — |
| Expiry date | Aug 11, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC30B29/52
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An alloy composition coasting scheme and specific heat treatment process are described for the production of directionally solidified single crystal articles which have exceptional properties. The alloy is based on the Ni-Al-Mo system, preferably with additions of Ta. The process for producing the article inclused directional solidification at a high rate to produce a fine dendritic microstructure. A combined homogenizing and solution treatment is performed to provide a unique chemically homogeneous single phase microstructure. This homogeneous article is rapidly quenched and then aged at an intermediate temperature to develop a controlled uniform distribution of fine gamma prime phase particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.