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Record Details

Record 40 of 131262
Heat Treatment Devices and Method of Operation Thereof to Produce Dual Microstructure Superalloys Disks
Offline Availability: Go to Request Form
Author and Affiliation:
Gayda, John [Inventor](NASA Glenn Research Center, Cleveland, OH, United States)
Gabb, Timothy P. [Inventor](NASA Glenn Research Center, Cleveland, OH, United States)
Kantzos, Peter T. [Inventor](NASA Glenn Research Center, Cleveland, OH, United States)
Abstract: A heat treatment assembly and heat treatment methods are disclosed for producing different microstructures in the bore and rim portions of nickel-based superalloy disks, particu- larly suited for gas turbine applications. The heat treatment assembly is capable of being removed from the furnace and disassembled to allow rapid fan or oil quenching of the disk. For solutioning heat treatments of the disk, temperatures higher than that of this solvus temperature of the disk are used to produce coarse grains in the rim of each disk so as to give maximum creep and dwell crack resistance at the rim service temperature. At the same time, solution temperature lower than the solvus temperature of the disk are provided to produce fine grain in the bore of the disk so as to give maximum strength and low cycle fatigue resistance.
Publication Date: Dec 09, 2003
Document ID:
20040015213
(Acquired Feb 23, 2004)
Subject Category: MECHANICAL ENGINEERING
Report/Patent Number: US-Patent-6,660,110, US-Patent-Appl-SN-118625, NASA-Case-LEW-17206-1
Document Type: Patent
Financial Sponsor: NASA Glenn Research Center; Cleveland, OH, United States
Organization Source: NASA Glenn Research Center; Cleveland, OH, United States
Description: 10p; In English; Original contains black and white illustrations
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: HEAT TREATMENT; NICKEL ALLOYS; HEAT RESISTANT ALLOYS; HEATING EQUIPMENT; PATENTS; MICROSTRUCTURE; RAPID QUENCHING (METALLURGY); FRACTURE STRENGTH; DIAGRAMS; GAS TURBINES; FURNACES
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