|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location Specific, Processing-Microstructure-Property-Relationships III
||Additive Manufacturing of L12 Strengthened Aluminum Superalloy Addalloy™
||Seth Griffiths, Christian Leinenbach, Nhon Vo, Joe Croteau, David N. Seidman, David Dunand
|On-Site Speaker (Planned)
Aluminum superalloys are a new class of aluminum alloys that offer oxidation, corrosion, and creep resistance at elevated temperatures. Similar to the Ni-base superalloys, the Al superalloys utilize coherent L12 precipitates for strengthening. Additive Manufacturing (AM) of aluminum superalloys, such as AddalloyTM, has the potential to create complex monolithic structures that can lead to performance and cost improvements in structures for high temperature environ-ments. The rapid melting and solidification inherent to additive manufacturing provides a new opportunity to manufacture bulk material with metastable microstructures. Rapid solidification experiments mimicking the cooling rates experienced in AM (without the effects of additional thermal input) were conducted. Model experiments simulating the reheating inherent to the AM process were also performed. Microstructure characterization (optical, SEM, TEM) was performed on the samples from model experiments and Selective Laser Melted (SLM) fabricated parts. Precipitate morphology in as fabricated SLM samples was also investigated.
||Planned: Supplemental Proceedings volume