About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing of Metals: Applications of Solidification Fundamentals
|
Presentation Title |
Challenges in Wire-Arc Additive Manufacturing of Fe-Based Shape Memory Alloy |
Author(s) |
Soumyajit Koley, Kuladeep Rajamudili, Supriyo Ganguly |
On-Site Speaker (Planned) |
Soumyajit Koley |
Abstract Scope |
Iron based shape-memory alloys are considered as an inexpensive alternative to Ni-Ti alloy suitable for seismic isolation application in civil structures. Fe-17Mn-10Cr-5Si-4Ni-0.5V-0.5C alloy contains 37 wt.% of total solute elements. Such rich multi-component metallurgical system leads to wide solidification temperature range which often subsequently leads to severe solute segregation and solidification cracking.
Wire-arc additive manufacturing (WAAM) of Fe-17Mn-10Cr-5Si-4Ni-0.5V-0.5C alloy was attempted using a cold-wire fed plasma arc torch attached to a CNC gantry. Self-standing walls were manufactured. The process conditions were modelled using finite-element method to generate the cooling rates at different location of the wall. This information was used in diffusion-based calculation using commercial DICTRA software to generate the solute segregation profiles and solidification path. Later, different solidification cracking theories were used to calculate the cracking propensity at different location of the wall or at different process conditions. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, ICME, Solidification |