Method for connecting superalloy components
US4750946A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1986 |
| Grant date | Jun 14, 1988 |
| Priority date | — |
| Expiry date | Feb 12, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K20/24
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Components (5) in a superalloy, in particular a dispersion hardened nickel based alloy, are connected together by pressure bonding in the solid condition with the greatest possible limitation of the overall deformation of the complete components (5) by lateral restraint (7), the actual bonding zone (6) having short-term intensive dynamic plastic flow imposed on it and, taking account of the deformation temperature, the local deformation rate .epsilon..sub.l and the local deformation .epsilon..sub.l referred to the bonding zone (6) are matched together in such a way that the driving force during the subsequent heat treatment of the complete workpiece above the recrystallization temperature is sufficient to force the formation of coarse grain under all conditions. It can then be assumed that, in general, the expression ##EQU1## h.sub.o =height of the bonding zone (6) before connection, h.sub.f =height of the bonding zone (6) after connection, PA0 D.sub.Ni =the temperature dependent diffusion coefficient of Ni, is within the limits 10 and 20. The nickel based superalloys of principal interest should be connected in a maximum total bonding time of 20 s, the average value of .epsilon..s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.