Thermal Reversibility of the Flow Stress in Single Crystal Titanium-56 Aluminum
Stucke, Monica Silva
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https://hdl.handle.net/2142/82935
Description
Title
Thermal Reversibility of the Flow Stress in Single Crystal Titanium-56 Aluminum
Author(s)
Stucke, Monica Silva
Issue Date
2000
Doctoral Committee Chair(s)
Ian Robertson
Department of Study
Materials Science and Engineering
Discipline
Materials Science and Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Metallurgy
Language
eng
Abstract
The [021] oriented samples were also analyzed in order to observe ordinary dislocation motion without the presence of superdislocations. It was found that all ordinary dislocations observed were mostly 60°, mixed dislocations, with relatively few screw ordinary dislocations. At room temperature, screw and mixed ordinary dislocations were observed. At elevated temperature, mostly mixed ordinary dislocations were observed. The re-strained sample showed many mixed characters segments observed along the dislocation line. It is suggested that the screw portion of these mixed dislocations cross-slipped from the primary {111} plane to another {111} plane.
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