Nanoscale Patterning of Chemical Order Introduced by Displacement Cascades in Irradiated Alloys
Ye, Jia
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https://hdl.handle.net/2142/82794
Description
Title
Nanoscale Patterning of Chemical Order Introduced by Displacement Cascades in Irradiated Alloys
Author(s)
Ye, Jia
Issue Date
2006
Doctoral Committee Chair(s)
Bellon, Pascal
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, Materials Science
Language
eng
Abstract
We test the predictions on the Ni3Al compound by combining molecular dynamics (MD) and KMC simulations. For 1MeV Kr and 70keV He ions, MD simulations are used to simulate the disordered zones, which are then incorporated into KMC simulations to reach long irradiation times. These simulations indicate that 1MeV Kr ion irradiation can lead to patterning, whereas 70keV He ion cannot. Experimentally, we propose to use HRTEM imaging to identify the patterning of chemical order in Ni3Al.
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