|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location Specific, Processing-Microstructure-Property-Relationships III
||Microstructure-property Relationships in Advanced High Deposition Rate Cold Metal Transfer (CMT) Additive Manufactured IN718
||Benjamin Adam, Thomas Langston, Ahmet Tanrikulu, Graham Tewksbury, Tae-Kyu Lee
|On-Site Speaker (Planned)
Additive manufacturing technology promises to reduce raw material costs by reducing subtractive manufacturing related material wastage, time to market and by increasing design freedom. However, for processes like selective laser deposition or electron beam melting, the deposition rates are relatively low, part size is limited and both deposition technologies are expensive. Advanced low heat input precision controlled wire-based GMA using Cold Metal Transfer (CMT) can overcome these limitations and also provide expandable multilayer structures. In this study the widely used Ni-based superalloy IN718 was employed as deposition material on IN718 substrate, simulating applications such as aerospace fan-blade buildup repair. Feasibility and reproducibility of the AM process were established empirically before both mechanical testing and microstructural characterization was performed. The influence of various heat treatments on the phase transformation kinetics, mechanical properties and texture evolution was tested by utilizing a Gleeble 3500, and results compared with the as-built condition.
||Planned: Supplemental Proceedings volume