Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


Bryant_HEA_Thesis-4-8-15.pdf (87.58 MB)

ETD Abstract Container

Abstract Header

EXPERIMENTAL VALIDATION OF THE CALPHAD APPROACH APPLIED TO MULTI-PRINCIPLE ELEMENT ALLOYS

Bryant, Nathan J.
http://rave.ohiolink.edu/etdc/view?acc_num=wright1433176902

Abstract Details

2015, Master of Science in Engineering (MSEgr), Wright State University, Materials Science and Engineering.
High entropy alloys (HEAs) are a recent area of research in materials science. Their namesake is because their high entropy of mixing due to multiple metallic elements in a near equimolar ratio. The high entropy of mixing is supposed to suppress unwanted, brittle, ordered intermetallic phases, and form a single, randomly mixed solid solution phase. This phenomena makes HEAs a good candidate for structural applications. However, this entropy of mixing may not be enough to suppress all intermetallic phases. For this reason, the CALculation of PHAse Diagrams (CALPHAD) approach is being explored to predict phase equilibrium in HEAs. This study seeks to experimentally validate the current CALPHAD approach when applied to HEAs. Five alloy compositions were characterized with SEM, EDS, and XRD in the as-cast condition and after equilibrium heat treatments of 500hr at 1000°C and 1000hr at 750°C. Phases detected in the experimental alloys were compared with the CALPHAD predicted equilibrium phases. When considerations are taken, the current CALPHAD approach is adequate in predicting phase equilibrium for HEAs.
Raghavan Srinivasan, Ph.D. (Advisor)
Allen Jackson, Ph.D. (Committee Member)
Daniel Miracle, Ph.D. (Committee Member)
112 p.
Aerospace Materials; Materials Science; Metallurgy
CALPHAD; High Entropy Alloys

Recommended Citations

Citations

  • Bryant, N. J. (2015). EXPERIMENTAL VALIDATION OF THE CALPHAD APPROACH APPLIED TO MULTI-PRINCIPLE ELEMENT ALLOYS [Master's thesis, Wright State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=wright1433176902

    APA Style (7th edition)

  • Bryant, Nathan. EXPERIMENTAL VALIDATION OF THE CALPHAD APPROACH APPLIED TO MULTI-PRINCIPLE ELEMENT ALLOYS . 2015. Wright State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=wright1433176902.

    MLA Style (8th edition)

  • Bryant, Nathan. "EXPERIMENTAL VALIDATION OF THE CALPHAD APPROACH APPLIED TO MULTI-PRINCIPLE ELEMENT ALLOYS ." Master's thesis, Wright State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=wright1433176902

    Chicago Manual of Style (17th edition)

wright1433176902
723
© 2015, all rights reserved.
This open access ETD is published by Wright State University and OhioLINK.