Degree Type

Dissertation

Date of Award

2010

Degree Name

Doctor of Philosophy

Department

Materials Science and Engineering

First Advisor

Karl A. Gschneidner

Second Advisor

Alan M. Russell

Abstract

The apparent yield strength anomaly in the B2 YCu intermetallic compound is shown not to be a yield point anomaly at all, but rather a phenomenon resulting from the work hardening behavior in YCu, which was found to rise with rising temperature and to drop with increases in strain rate. This effect is shown to occur over temperature ranges where YCu has negative strain rate sensitivity, result in dynamic strain ageing behavior, and the effect is shown to be irreversible when the testing temperature is changed. Neutron diffraction experiments utilizing SMARTS and HIPPO show the evolution of texture and the change in plastic deformation behavior as the temperature is raised.

DOI

https://doi.org/10.31274/etd-180810-1262

Copyright Owner

Andrew Todd Becker

Language

en

Date Available

2012-04-30

File Format

application/pdf

File Size

154 pages

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