|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Materials for High Temperature Applications: Next Generation Superalloys and Beyond
||Additive Manufacturing of High Temperature Alloys: An Emphasis on the Current State and Future Direction of Ni-base Superalloy Processability in AM
||Michael M. Kirka, Ryan Dehoff
|On-Site Speaker (Planned)
||Michael M. Kirka
While nickel base (Ni-base) superalloys have been widely utilized for gas turbine engine applications among others in cast and wrought forms for well over 70 years, the limits of the alloy family are beginning approached. However, fabricating Ni-base superalloys through additive manufacturing (AM) techniques is relatively new and lacks the deep understanding of the structure-property relations of the materials fabricated through the traditional techniques. Further, challenges exist in relating the formation of defects to process parameters, and the influence of repeated rapid thermal gyrations and high cooling rates on the unique liquid-solid, and solid-solid phase transformations in the AM processed Ni-base superalloys. To be covered in this talk is the current state and challenges in processing Ni-base superalloys spanning the highly weldable to the traditionally non-weldable via AM techniques, and the future direction and needs for processing future advanced high temperature alloys utilizing AM processes.