Method of producing an age precipitation-containing rare earth metal-nickel alloy
US6053995A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 1996 |
| Grant date | Apr 25, 2000 |
| Priority date | — |
| Expiry date | Jul 3, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S420/90
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of producing an age precipitation-containing rare earth metal-nickel alloy of AB.sub.5 type having a composition represented by a formula (1) EQU R(ni.sub.1-x M.sub.x).sub.5+y (1) wherein R stands for a rare earth element including Y or mixtures thereof, M stands for Co, Al, Mn, Fe, Cu, Zr, Ti, Mo, W, B, or mixtures thereof, x satisfies the relation of 0.05.ltoreq.x.ltoreq.0.5, and y satisfies the relation of -0.45.ltoreq.y.ltoreq.0.45, the alloy containing a precipitated phase having an average size of 0.1 to 20 .mu.m as measured along the longitudinal axis is disclosed. The method includes the steps of subjecting a raw alloy material having a composition represented by the formula (1) to a solid solution treatment at a temperature of not less than 1000.degree. C. and ageing the alloy material subjected to said solution heat treatment at a temperature T (.degree. C) of not less than 700.degree. C. and less than 1000.degree. C. for a time period t (hour) which satisfies the relation represented by the formula (2) EQU (830-T)/200.ltoreq.logt.ltoreq.(1200-T)/200 (2), thereby precipitating a precipitated phase having an average size of 0.1 to 20 .mu.m as measured along the lo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.