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Modeling of temperature dependence of stress-reorientation of hydrides in CWSR Zr-alloys

Singh, R. N. ; Ståhle, Per LU ; Banks-Sills, Leslie LU ; Ristinmaa, Matti LU orcid and Banerjee, S. (2008) In Defect and Diffusion Forum p.105-110
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... (More)
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. (Less)
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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Defect and Diffusion Forum
issue
279
pages
6 pages
publisher
Trans Tech Publications
DOI
10.4028/www.scientific.net/DDF.279.105
language
Swedish
LU publication?
yes
id
9021934a-638a-4c2e-b37b-d2025847d7be
date added to LUP
2019-06-17 18:45:07
date last changed
2020-09-24 09:59:24
@article{9021934a-638a-4c2e-b37b-d2025847d7be,
  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.}},
  author       = {{Singh, R. N. and Ståhle, Per and Banks-Sills, Leslie and Ristinmaa, Matti and Banerjee, S.}},
  language     = {{swe}},
  number       = {{279}},
  pages        = {{105--110}},
  publisher    = {{Trans Tech Publications}},
  series       = {{Defect and Diffusion Forum}},
  title        = {{Modeling of temperature dependence of stress-reorientation of hydrides in CWSR Zr-alloys}},
  url          = {{http://dx.doi.org/10.4028/www.scientific.net/DDF.279.105}},
  doi          = {{10.4028/www.scientific.net/DDF.279.105}},
  year         = {{2008}},
}