| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Deformation-induced Manipulation of Defect Structures and Hierarchical Microstructures
|
| Presentation Title |
Grain Refinement and Microstructural Evolution in AM High Entropy Alloys through SPD and Thermomechanical Processing |
| Author(s) |
Benjamin Adam, Megumi Kawasaki, Tianyi Chen |
| On-Site Speaker (Planned) |
Benjamin Adam |
| Abstract Scope |
Additive manufacturing (AM) techniques are of current interest to advance the synthesis and application of novel high-performance structural alloys such as High Entropy Alloys (HEA). Advantages of AM over conventional manufacturing in processing complexity are balanced with the need for post-process thermo-mechanical treatment to achieve optimal in-service mechanical properties.
Here we explore effects of severe plastic deformation (SPD) through Equal Angular Channel Processing (EACP) and High Pressure Torsion (HPT) and thermomechanical processing through hot compression on microstructure-property relationships in AM-built samples. Each processing step is analyzed for evolution of grain size, morphology, and texture using electron backscatter diffraction and scanning electron microscopy techniques. In-situ mechanical testing through nanoindentation provides complementary data at micro scale on hardness, elastic modulus and plasticity of the material. Results will aid in understanding the link between initial as-built microstructure and final mechanical properties, and populate gaps in datasets for materials synthesized using advanced manufacturing techniques. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Entropy Alloys, Shaping and Forming |