Thermodynamic Modelling Of A
6w/o Al P/M Processed Ni Base Superalloy
Author(s)
D. A. Akinlade, W. F. Caley, N. L. Richards
& M. C. Chaturvedi
Abstract
A thermodynamic java based software package (JMatPro) was used to predict
the powder metallurgy (P/M) processing of a superalloy based on the
composition of IN600. The effects of adding 6w/o Al to the alloy on sintering
time and temperature were estimated and compared with results obtained
experimentally from a combination of X-ray diffraction and metallography.
Phases predicted by the modelling compared favourably with microstructural
observations and phase identification of the P/M processed alloy in terms of
prediction/microstructural observation of austenite, gamma prime and chromium
rich carbides. Furthermore, both microstructural predictions for the alloy after
solution treatment and hardness values generated were in agreement with
metallographic observations and hardness measurements respectively. These
results suggest that the software and predictions used in this study offer a
reasonable way to simulate the characterisation of P/M processed nickel-based
superalloys.
Keywords: superalloy, powder metallurgy, thermodynamic modelling,
morphology.
1 Introduction
Superalloys are high temperature and high strength alloys. Among the large
number of superalloys available is Inconel 600 which is a NiCrFe alloy. Some
advantages of this alloy include: good mechanical properties at elevated
temperatures, good workability and reasonable weldability. Because of these
Keywords
superalloy, powder metallurgy, thermodynamic modelling,
morphology.
Related Book
Other papers in this volume
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