Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/42975
Title: Simulation of γ-hydride precipitation in bi-crystalline zirconium under uniformly applied load
Authors: Ma, X
Shi, SQ
Woo, CH
Chen, LQ
Keywords: Computer simulation
Zirconium hydride
Bi-crystal
Phase-field kinetic model
Morphology evolution
Issue Date: 2002
Publisher: Elsevier
Source: Materials science & engineering. A, structural materials : properties, microstructure and processing, 2002, v. 334, no. 1-2, p. 6-10 How to cite?
Journal: Materials science & engineering. A, structural materials : properties, microstructure and processing 
Abstract: The morphology evolution of γ-hydride precipitation and growth in a zirconium bi-crystal was simulated using a phase field kinetic model. The effects of grain boundary and uniformly applied load were studied. The temporal evolution of the spatially dependent field variables is determined by numerically solving the time-dependent Ginzburg–Landau equations for the structural variables and the Cahn–Hilliard diffusion equation for the concentration variable. It is demonstrated that nucleation density of the hydride at the grain boundary increases as compared to the bulk and favorable hydride precipitation at the grain boundary become weaker when an external load is applied. The result also showed that hydrides will grow in those habit planes that are near the perpendicular direction of the applied tensile load.
URI: http://hdl.handle.net/10397/42975
ISSN: 0921-5093
DOI: 10.1016/S0921-5093(01)01770-1
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