Director of Research (if dissertation) or Advisor (if thesis)
Averback, Robert S.
Committee Member(s)
Bellon, Pascal
Dillon, Shen J.
Trinkle, Dallas R.
Department of Study
Materials Science & Engineerng
Discipline
Materials Science & Engr
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Nanocrystalline
binary alloy
ternary alloy
mechanical properties
irradiation
severe plastic deformation
Abstract
The development of new nanostructured materials for use in extreme mechanical and
thermal environments is likely to be of critical importance for a number of future
energy technologies. These materials are characterized by a large density of grain
boundaries. Consequently, they are inherently strong due to GB strengthening, and
they offer resistance to radiation damage due to their high density of unbiased,
unsaturable sinks. In this thesis dissertation, it will discuss (i) the mechanisms that
control their strength, including inverse Hall-Petch behavior; (ii) their dimensional
and phase stability during irradiation; and (iii) the processing of these materials by
severe plastic deformation. The work was a combination of both experimental and
computational investigations.
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