Characterization of zirconium hydrides in Zircaloy-4 cladding with respect to cooling rate
- Authors
- Kim, Sung-Dae; Rhyim, Youngmok; Kim, Ju-Seong; Yoon, Jonghun
- Issue Date
- Oct-2015
- Publisher
- ELSEVIER
- Keywords
- Zircaloy-4; Zirconium hydride; Transmission electron microscopy (TEM); delta-hydride; gamma-hydride; Surface hydride
- Citation
- JOURNAL OF NUCLEAR MATERIALS, v.465, pp.731 - 736
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF NUCLEAR MATERIALS
- Volume
- 465
- Start Page
- 731
- End Page
- 736
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/17028
- DOI
- 10.1016/j.jnucmat.2015.07.006
- ISSN
- 0022-3115
- Abstract
- In order to characterize the habit planes and crystallographic relation between the alpha-matrix and various kinds of Zr hydrides, three different Zr hydrides including delta-hydride, gamma-hydride, and surface hydride are produced by controlling the cooling rate from 0.5 to 300 degrees C/min. Analysis of SAED patterns and TEM images of the Zr hydrides demonstrates representative habit planes and crystallographic relation according to the hydride morphologies. The macroscopic delta-hydride has two kinds of habit planes such as {10 (1) over bar7}(alpha) and {0002}(alpha), while microscopic delta-hydride has the habit plane of {0002}(alpha) at the cooling rate of 0.5-10 degrees C/min. The microscopic gamma-hydride has the major habit plane of {10 (1) over bar7}(alpha) at the cooling rate of 300 degrees C/min in which the crystallographic relation between the gamma-hydride and the alpha-Zr matrix as (11 (1) over bar)(gamma)parallel to(01 (1) over bar1)(alpha); (111)(gamma)parallel to(0001)(alpha); [1 (1) over bar0](gamma)parallel to[11 (2) over bar0](alpha). (C) 2015 Elsevier B.V. All rights reserved.
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