Polycrystal Modeling of Precipitate Effects on the Mechanical Behavior of an Aluminum -Copper Alloy
Foglesong, Tracy Jayne
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https://hdl.handle.net/2142/83763
Description
Title
Polycrystal Modeling of Precipitate Effects on the Mechanical Behavior of an Aluminum -Copper Alloy
Author(s)
Foglesong, Tracy Jayne
Issue Date
2001
Doctoral Committee Chair(s)
Sehitoglu, Huseyin
Department of Study
Mechanical Engineering
Discipline
Mechanical Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Mechanical
Language
eng
Abstract
The physically-based hardening formulation was derived from dislocation theory resulting in both statistical and geometrical storage components, where the distinguishing microstructural length scales were included in the geometrical storage terms. The phenomenon of precipitation-induced anisotropy was incorporated into the hardening description. Model results were compared to single crystal and polycrystal compression experiments. Accurate simulations were obtained for most of the aging conditions and the correct trends due to precipitate-induced anisotropy were predicted.
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