About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing, Directed Energy Deposition of Metals: Processing – Microstructure – Mechanical Property Relationships
|
| Presentation Title |
Interactions Between Grain Characteristics and Ion Irradiation in Additively Manufactured CoCrFeNi-based High-Entropy Alloys |
| Author(s) |
Jiaxuan Li, Wei-Ying Chen, Meimei Li, Shunyu Liu |
| On-Site Speaker (Planned) |
Shunyu Liu |
| Abstract Scope |
To investigate the response of grain characteristics to ion irradiation damage in high-entropy alloys and the effects of irradiation on grain structure evolution, equiatomic CoCrFeNi-based alloys with tailored microstructures were fabricated via laser-directed energy deposition followed by high-temperature annealing. Ion irradiations were performed at different temperatures and doses. Transmission electron microscopy was utilized to characterize the distribution of irradiation-induced defects across regions with varying grain and grain boundary features. Additionally, high-resolution scanning electron microscopy and nanoindentation testing were employed to examine the evolution of microstructural features and micromechanical properties. These findings provide important insights into the interactions between grain-scale structural characteristics and irradiation damage in additively manufactured high-entropy alloys in the as-built and heat-treated conditions. |