Date of Graduation

5-2021

Document Type

Thesis

Degree Name

Bachelor of Science in Mechanical Engineering

Degree Level

Undergraduate

Department

Mechanical Engineering

Advisor/Mentor

Huitink, David

Committee Member/Reader

Millett, Paul

Abstract

In this paper, the properties of a new and broad class of materials, high entropy alloys (HEAs), were investigated and evaluated for hypersonic applications. The plan was to identify candidate hypersonic HEAs and model the high-temperature strength using new advanced material models that account for asymmetry and anisotropy characterized with available test data. After accessing a local database of HEAs and their material properties in collaboration with Dr. Gorsse et al., it was realized the knowledge of HEAs is currently very broad but lacks depth. While hundreds of HEAs have been created and tested, none so far have both sufficient data and the desired properties to more accurately model high-temperature strength. Further research is required to begin bringing HEAs into the world of constitutive modeling and simulation, which is the next step to real world applications. Several HEAs have been identified as having high potential for further research.

Keywords

High Entropy Alloys; Hypersonics; HfNbTaTiZr; Refractory High Entropy Alloys

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