Degree Type
Dissertation
Date of Award
2015
Degree Name
Doctor of Philosophy
Department
Materials Science and Engineering
First Advisor
Ralph E. Napolitano
Abstract
Crystallization under far-from-equilibrium conditions is investigated for two different scenarios: crystallization of the metallic glass alloy Cu50Zr50 and solidification of a transparent organic compound, o-terphenyl. For Cu50Zr50, crystallization kinetics are quantified through a new procedure that directly fits thermal analysis data to the commonly utilized JMAK model. The phase evolution during crystallization is quantified through in-situ measurements (HEXRD, DSC) and ex-situ microstructural analysis (TEM, HRTEM). The influence of chemical partitioning, diffusion, and crystallographic orientation on this sequence are examined. For o-terphenyl, the relationship between crystal growth velocity and interface undercooling is systematically studied via directional solidification.
Copyright Owner
Timothy Edward Cullinan
Copyright Date
2015
Language
en
File Format
application/pdf
File Size
162 pages
Recommended Citation
Cullinan, Timothy Edward, "Crystallization dynamics in glass-forming systems" (2015). Graduate Theses and Dissertations. 14689.
https://lib.dr.iastate.edu/etd/14689
