|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Materials for High Temperature Applications: Next Generation Superalloys and Beyond
||Effect of Alloying on the Microstructure and Properties of Superalloys Containing Gamma Prime and Gamma Double Prime Precipitates
||Paul M Mignanelli, Nicholas G Jones, Giles Rought Whitta, Felicity F Dear, Mark C Hardy, Howard Stone
|On-Site Speaker (Planned)
||Paul M Mignanelli
The service requirements of nickel-based superalloys demand that they possess considerable strength, thermal stability and environmental resistance at elevated temperatures. Recently, a new nickel-based superalloy has been identified with a microstructure containing both gamma prime and gamma double prime precipitates that offers appreciable performance improvements over IN718. In this study, the effect of various alloying additions on the precipitate morphology, thermal stability and the hardness of this alloy have been assessed. In addition, the effect of microstructural condition on the alloy’s isothermal oxidation behaviour has been investigated and the results compared with existing alloys. Alloys based on this system are believed to have considerable potential for high temperature structural applications and prospects for their future development will be presented. The authors would like to acknowledge the EPSRC/Rolls-Royce Strategic Partnership for funding (EP/M005607/1 and EP/H022309/1).