Functionally graded alloy, use thereof and method for producing same
US6328822A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jun 25, 1999 |
| Grant date | Dec 11, 2001 |
| Priority date | — |
| Expiry date | Jun 25, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12458
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The functionally graded alloy having a composition comprising 3-10 weight % of Al, 5-20 weight % of Mn, the balance being substantially Cu and inevitable impurities has a first portion composed essentially of a .beta.-phase, a second portion composed essentially of an .alpha.-phase and a Heusler phase, and a third portion having a crystal structure changing continuously or stepwise from the first portion to the second portion. The functionally graded alloy can be produced by forming a copper-based alloy having the above composition, keeping it at 500.degree. C. or higher and rapidly cooling it, and then subjecting it to an aging treatment by a gradient temperature heater. Such functionally graded alloy can suitably be used for guide wires and catheters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.