TY - GEN
T1 - Taguchi design for heat treatment of rene 65 components
AU - Katsari, Christina Maria
AU - Yue, Stephen
AU - Wessman, Andrew
N1 - Funding Information:
Financial support from the Natural Science and Engineering Council of Canada, GE Aviation, Bromont, Quebec Canada, the Consortium de Recherche et D'innovation en Transformation Métallique and the McGill Engineering Doctoral Award (to CM. Katsari) is gratefully acknowledged.
Publisher Copyright:
Copyright © 2019 ASM International® All rights reserved.
PY - 2019
Y1 - 2019
N2 - Rene 65 is a nickel-based superalloy used in aerospace components such as turbine blades and disks. The microstructure in the as received condition of the superalloy consists of ∼40% volume fraction of gamma prime precipitates, which gives such a high strength that thermomechanical processing is problematic. The goal of this study was to develop a heat treatment for manufacturing of Rene 65 components by changing the size distribution and volume fraction of those precipitates and lowering the strength. Gamma prime in this alloy is observed in three sizes, ranging from a few urn to tens of nm. For the design of the heat treatments, Design of Experiments (DOE) has been used; more specifically Taguchi's L8 matrix. The four factors that are examined are cooling rate, hold temperature, hold time and cooling method to room temperature. The levels of the factors were two (high and low) with replication. Microstructures were characterized by Scanning Electron Microscopy and mechanical properties by Vickers microhardness testing.
AB - Rene 65 is a nickel-based superalloy used in aerospace components such as turbine blades and disks. The microstructure in the as received condition of the superalloy consists of ∼40% volume fraction of gamma prime precipitates, which gives such a high strength that thermomechanical processing is problematic. The goal of this study was to develop a heat treatment for manufacturing of Rene 65 components by changing the size distribution and volume fraction of those precipitates and lowering the strength. Gamma prime in this alloy is observed in three sizes, ranging from a few urn to tens of nm. For the design of the heat treatments, Design of Experiments (DOE) has been used; more specifically Taguchi's L8 matrix. The four factors that are examined are cooling rate, hold temperature, hold time and cooling method to room temperature. The levels of the factors were two (high and low) with replication. Microstructures were characterized by Scanning Electron Microscopy and mechanical properties by Vickers microhardness testing.
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M3 - Conference contribution
AN - SCOPUS:85096351249
T3 - 30th ASM Heat Treating Society Conference and Exposition, Heat Treat 2019 - Extended Abstracts
SP - 337
EP - 342
BT - 30th ASM Heat Treating Society Conference and Exposition, Heat Treat 2019 - Full Papers
PB - ASM International
T2 - 30th ASM Heat Treating Society Conference and Exposition, Heat Treat 2019
Y2 - 15 October 2019 through 17 October 2019
ER -