scholarly journals Spinodal Decomposition Versus Classical Gamma-Prime Nucleation in a Nickel-Base Superalloy Powder: An In-Situ Neutron Diffraction and Atomic-Scale Analysis

2020 ◽  
Author(s):  
David M. Collins ◽  
Neil D’Souza ◽  
Chinnapat Panwisawas ◽  
Chrysanthi Papadaki ◽  
Geoff D. West ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Atomic Scale ◽  
Nickel Base Superalloy ◽  
Scale Analysis ◽  
Gamma Prime ◽  
Nickel Base ◽  
In Situ Neutron Diffraction ◽  
Base Superalloy ◽  
Superalloy Powder

Thermomechanical processing of a nickel-base superalloy powder compact

1983 ◽  
Vol 1 (4) ◽  
pp. 201-207 ◽  
Author(s):  
A.Y. Kandeil ◽  
J-P.A. Immarigeon ◽  
W. Wallace ◽  
M.C. de Malherbe
Keyword(s):  
Powder Compact ◽  
Thermomechanical Processing ◽  
Nickel Base Superalloy ◽  
Nickel Base ◽  
Base Superalloy ◽  
Superalloy Powder

Effect of Precipitation Aging Temperatures on Reheat Treated Microstructures and its Phase Stability after Long-Term Exposure in Cast Nickel Base Superalloy, Grade Inconel 738

2017 ◽  
Vol 891 ◽  
pp. 433-437 ◽  
Author(s):  
Nattapol Kontikame ◽  
Sureerat Polsilapa ◽  
Panyawat Wangyao
Keyword(s):  
Phase Stability ◽  
Power Plants ◽  
Turbine Blades ◽  
Research Work ◽  
Nickel Base Superalloy ◽  
Gamma Prime ◽  
Treatment Conditions ◽  
Nickel Base ◽  
Base Superalloy

This research work has an aim to investigate the effect of precipitation aging temperatures of 845°C, 865°C, 885°C and 905°C for 24 hours after solutioning treatment at temperature of 1145°C for 4 hours on final microstructure of cast nickel base superalloy, grade Inconel 738, which is used as a material for turbine blades in land base gas turbine engines to generate electricity in power plants. Further interesting is also extended to study and evaluate the phase stability of precipitated gamma prime particles after long-term heating at tempeatures of 900°C and 1000°C for 200 hours of all received final microstructures after various reheat treatment conditions. From all obtained results, it was found that the higher precipitation aging temperatures provided the more coarsening size of both coarse and fine gamma prime particles. Furthermore, after long-term exposure at high temperatures, this resulted in an increasing of both area density and size of gamma prime particles.

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