SUPERALLOY HEAT TREATMENT FOR PROMOTING CRACK GROWTH RESISTANCE
Assignee
UNITED TECHNOLOGIES A CORP OF DE
Filed
May 10, 1985
Granted
Jul 12, 1994
Location
JUPITER FL US
Abstract
Nickel base superalloy articles, especially gas turbine disks, are provided with substantially enhanced resistance to crack growth through a specific heat treatment. The heat treatment employs a true solution treatment step followed by a subsolvus solution treatment step, followed by at least one aging step. The effect of this series of heat treatment steps is to provide a microstructure having an optimum arrangement of gamma prime particles, with respect to both size and location. Reductions in crack growth rates of several hundred percent relative to prior art heat treatments are achieved.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Nov 5, 1985
Rescinded
Nov 6, 1992
Duration
7 years
Inventor
- 1THOMAS D. TILLMAN
Record Details
- Patent number
- US 5328659
- Application
- 06733446
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
Browse by Assignee
UNITED TECHNOLOGIES A CORP OF DERelated by domain
GAS TURBINE ENGINE COMBUSTOR HAVING TRAPPED DUAL VORTEX CAVITY
General Electric
SOLID ROCKET PROPELLANT
GAS TURBINE ENGINE FAN (U)
General Electric
TURNING VANE ARRANGEMENT FOR IR SUPPRESSORS
SIKORSKY AIRCRAFT CORPORATION
MODULAR ROCKET BOOSTED PENETRATING WARHEAD
LOCKHEED MARTIN CORP.
INTEGRAL SOLID BOOSTER AND HYBRID THRUST SUSTAINING SYSTEM AND PROJECTILE INCORPORATING THE SAME
ENVIRONMENTAL AEROSCIENCE CORPORATION