Effect of strain on phase selection in High Entropy Alloys
Date
Authors
Major Professor
Advisor
Committee Member
Journal Title
Journal ISSN
Volume Title
Publisher
Authors
Research Projects
Organizational Units
Journal Issue
Is Version Of
Versions
Series
The Honors project is potentially the most valuable component of an Honors education. Typically Honors students choose to do their projects in their area of study, but some will pick a topic of interest unrelated to their major.
The Honors Program requires that the project be presented at a poster presentation event. Poster presentations are held each semester. Most students present during their senior year, but may do so earlier if their honors project has been completed.
This site presents project descriptions and selected posters for Honors projects completed since the Fall 2015 semester.
Department
Abstract
High-entropy alloys are potential candidates for high temperature application which form solid solutions with FCC, BCC, and HCP crystal structures. In order to investigate the applicability of Hume-Rothery rules and approaches to these alloys, we devise a set of experiments for understanding the role of strain and valence-electron concentrations. In this study, we explore the role of strain by varying the Ti:Zr ratio in pseudo-quaternary AlCuNi(TixZr1-x) alloys. The alloys were synthesized using different techniques in order to assess the role of kinetics in phase selection. The samples were analyzed via x-ray diffraction and scanning electron microscopy. All compositions tested were found to consist of a primary BCC phase and a secondary FCC phase. With the addition of Ti significant peak broadening was observed.