About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
High Entropy Alloys VIII
|
Presentation Title |
J-135: Wire +Arc Additive Manufacturing of AlCoCrFeNi High Entropy Alloy |
Author(s) |
Rumman Ul Ahsan, Gi-Jeong Seo, Xuesong Fan, Yousub Lee, P. K. Liaw, Duck Bong Kim |
On-Site Speaker (Planned) |
Rumman Ul Ahsan |
Abstract Scope |
Gas tungsten arc (GTA) based Wire+arc additive manufacturing (WAAM) can deposit any metallic material due to its inherent independent control of the arc. Additive manufacturing of high entropy alloys (HEAs) combines the extraordinary mechanical properties of the new family of alloys with flexibility with geometry and complexity of the process. In this work, a GTA-WAAM approach is presented for near net shaped deposition from a pre-alloyed and extruded AlCoCrFeNi HEA. The microstructure of the as-deposited HEA was investigated and compared with the arc melted HEA of the same composition. A strong influence of the high heat input followed by a rapid solidification along with a directional nature of cooling was observed on the amount of phases, their composition and spatial distribution were observed. It is concluded that GTA-WAAM can be a versatile tool for additive manufacturing with HEAs, despite the challenges involved to have a controlled microstructure. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume |