δ-hydride habit plane determination in α-Zirconium at 298 K by strain energy minimization technique

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δ-hydride habit plane determination in α-Zirconium at 298 K by strain energy minimization technique

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Publication Article, peer reviewed scientific
Title δ-hydride habit plane determination in α-Zirconium at 298 K by strain energy minimization technique
Author(s) Singh, Ram N ; Ståhle, Per ; Banks-Sills, Leslie ; Ristinmaa, Matti ; Banjeree, Srikumar
Date 2008
English abstract
Hydrogen in excess of solid solubility precipitates as hydride phase of plate shaped morphology in hcp α-Zr with the broad face of the hydride plate coinciding with certain crystallographic plane of α-Zr crystal called habit plane. The objective of the present investigation is to predict the habit plane of δ-hydride precipitating in α-Zr at 298 K using strain energy minimization technique. The δ-hydride phase is modeled to undergo isotropic elasto-plastic deformation. The α-Zr phase was modeled to undergo transverse isotropic elastic deformation but isotropic plastic deformation. Accommodation strain energy of δ-hydride forming in α-Zr crystal was computed using initial strain method as a function of hydride nuclei orientation. Hydride was modeled as disk with round edge. Contrary to several habit planes reported in literature for δ- hydrides precipitating in α-Zr crystal, the total accommodation energy minima at 298 K suggests only basal plane i.e. (0001) as the habit plane.
DOI http://dx.doi.org/10.4028/www.scientific.net/DDF.279.105 (link to publisher's fulltext)
Host/Issue Defect and Diffusion Forum
Volume 279
ISSN 1012-0386
Pages 105-110
Language eng (iso)
Subject(s) Technology
Research Subject Categories::TECHNOLOGY
Handle http://hdl.handle.net/2043/10901 (link to this page)

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