| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Materials Design and Alloy Development II
|
| Presentation Title |
Design of “Dynamic Alloys” for Additive Manufacturing |
| Author(s) |
Jinyeon Kim, Atieh Moridi |
| On-Site Speaker (Planned) |
Atieh Moridi |
| Abstract Scope |
Despite numerous studies on additive manufacturing (AM) of different metallic alloys, the properties remain inferior to that of wrought or cast counterparts. Strong anisotropy due to the formation of columnar grains and processing induced defects are two major issues detrimentally influencing mechanical properties of AM parts. The aim of this research is to overcome these long-standing limitations of AM by designing novel “dynamic alloys”. In particular, we modify the stacking fault energy of high entropy alloys (HEAs). We study alloy compositions with different Fe and Mn content (i.e. FexMn80-xCr10Co10 (at.%, x=35, 40, 45)) where deformation mode changes from slip to twining induced plasticity and finally transformation induced plasticity. We investigate how the additional nucleation sites, e.g., twin boundaries and the interface between the austenitic and the martensitic phase contribute to in-situ microstructure refinement and crystallographic texture break down during the intrinsic heat treatment in AM process. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |