About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior at the Nanoscale VIII
|
| Presentation Title |
Mechanical Property of irradiated and unirradiated HEA from Nanoindentation |
| Author(s) |
Cody Ray Fentress, Mohammad Shafinul Haque, Abraham Burleigh, Adrien Couet, Nicholas Crnkovich, Kavin Ammigan |
| On-Site Speaker (Planned) |
Mohammad Shafinul Haque |
| Abstract Scope |
Continuous high-energy beam interaction with particle production target systems in accelerator target facilities converts protons into secondary particles for high-energy physics (HEP) experiments. The resulting thermomechanical loading in the beam-intercepting material induces deformation and stress, and can lead to premature failure due to thermal shock and radiation damage effects. Ion-irradiation is widely used to investigate the effects of irradiation typically confined within a depth of a few micrometers from the surface. Nanoindentation is suitable for measuring the shallow surface mechanical degradation of the ion-irradiated material. This poster displays properties from nanoindentation of several low-density high-entropy alloys (HEAs) for beam window applications irradiated at different temperatures and multiple displacement-per-atom (dpa) levels relative to the pristine condition. The analysis utilizes the Continuous Stiffness Measurement (CSM) technique for dynamic nanoindentation, the Oliver-Pharr Method to determine the hardness and modulus of elasticity, and a flat-punch indentation technique to measure yield stress and strain. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Mechanical Properties, Nanotechnology |