| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Innovations in High Entropy Alloys and Bulk Metallic Glasses: An SMD & FMD Symposium in Honor of Peter K. Liaw
|
| Presentation Title |
Mechanical Behavior of Additive Manufactured CoCrNi High Entropy Alloy at 298K and 210K |
| Author(s) |
Soo Yeol Lee, You Sub Kim, Hobyung Chae, Wanchuck Woo, Dong-Kyu Kim, E-Wen Huang, Takuro Kawasaki, Stefanus Harjo |
| On-Site Speaker (Planned) |
Soo Yeol Lee |
| Abstract Scope |
The strength, ductility, and toughness of metallic alloys are highly dependent on temperature. In this work, a CoCrNi medium high entropy alloy (HEA) was manufactured by 3D printing using a direct energy deposition (DED) method. In-situ neutron diffraction experiments were performed to study the tensile behavior of the 3D printed CoCrNi HEA at 298K and 210K. The entire diffraction patterns monitored during tensile loading enabled us to examine evolution of 1) lattice strains by diffraction peak shift, 2) texture by integrated diffraction peak intensity, and 3) localized microstructure by diffraction peak broadening. In particular, macroscopic stress-strain response, microscopic elastic-plastic deformation, and strain hardening behavior during tensile loading were compared at 298K and 210K. Moreover, the development of grain structure with decreasing temperature is highlighted by the information obtained from peak profile analysis. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |