|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location Specific, Processing-Microstructure-Property-Relationships III
||Electron Beam Melting of High-gamma Prime Ni-base Superalloys
||Michael Kirka, Duncan Greeley, Manuel Villalpando, Matthew Ireland, Alex Plotkowski, Andrew Scopel, Yousub Lee, Charles Hawkins, Peeyush Nandwana, Ryan Dehoff
|On-Site Speaker (Planned)
Additive manufacturing (AM) represents a promising technology for the rapid fabrication of gas turbine components. Within the last few years has been an explosion of available materials to be processed through AM powder bed techniques. However, for critical applications, high gamma prime containing Ni-base superalloys are required. The challenge in processing these alloys via AM lies in the fact that their constituent elements make them highly non-weldable and crack prone. To be discussed is the current processing science and understanding associated with fabricating the high gamma prime Ni-base superalloys Inconel 738 and MarM-247 into prismatic and complex geometries via the electron beam melting process. To obtain optimal mechanical performance of these materials, post-processing is necessary, i.e. hot isostatic pressing and heat-treatment to give them an ideal structure. Further, the mechanical performance of the AM processed materials will be discussed within the context of tensile and creep behavior at high temperature.
||Planned: Supplemental Proceedings volume