Influence of stress field of expanding and contracting plate shaped precipitate on hydride embrittlement of Zr-alloys
(2013) In Materials Science & Engineering: A 579. p.157-163- Abstract
- The stress fields of expanding (precipitation) and contracting (dissolution) hydride plates were computed by finite element method using Zr-H solid solution and hydride properties at 25, 200 and 400 degrees C for fully and semi-constrained hydride plates. For the first time simultaneous hydride expansion and matrix contraction and vice-versa have been considered in a simulation of hydride precipitation and dissolution, respectively. It was observed that a fully constrained expanding hydride plate exerts a tensile stress field in the matrix close to the edge of the hydride plate while a partially contracting hydride plate exerts a tensile stress field in the hydride plate as well as a large compressive stress in the surrounding matrix close... (More)
- The stress fields of expanding (precipitation) and contracting (dissolution) hydride plates were computed by finite element method using Zr-H solid solution and hydride properties at 25, 200 and 400 degrees C for fully and semi-constrained hydride plates. For the first time simultaneous hydride expansion and matrix contraction and vice-versa have been considered in a simulation of hydride precipitation and dissolution, respectively. It was observed that a fully constrained expanding hydride plate exerts a tensile stress field in the matrix close to the edge of the hydride plate while a partially contracting hydride plate exerts a tensile stress field in the hydride plate as well as a large compressive stress in the surrounding matrix close to the edge of the hydride plate. It is suggested that a compressive stress component in the matrix acting normal to a partially shrinking hydride plate could possibly explain an enhanced resistance to hydride embrittlement of Zr-alloy at elevated temperature. (C) 2013 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3975413
- author
- Singh, R. N. ; Khandelwal, H. K. ; Bind, A. K. ; Sunil, S. and Ståhle, Per LU
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Zr-alloy, Hydride embrittlement, Fracture toughness, Stress-field, Fully, constrained
- in
- Materials Science & Engineering: A
- volume
- 579
- pages
- 6 pages
- publisher
- Elsevier
- external identifiers
-
- wos:000321681900021
- scopus:84878726590
- ISSN
- 1873-4936
- DOI
- 10.1016/j.msea.2013.04.117
- language
- English
- LU publication?
- yes
- id
- a9ac0d4b-4dec-4a6d-abfc-de5476d6eeab (old id 3975413)
- date added to LUP
- 2016-04-01 09:52:32
- date last changed
- 2022-02-17 04:26:51
@article{a9ac0d4b-4dec-4a6d-abfc-de5476d6eeab,
abstract = {{The stress fields of expanding (precipitation) and contracting (dissolution) hydride plates were computed by finite element method using Zr-H solid solution and hydride properties at 25, 200 and 400 degrees C for fully and semi-constrained hydride plates. For the first time simultaneous hydride expansion and matrix contraction and vice-versa have been considered in a simulation of hydride precipitation and dissolution, respectively. It was observed that a fully constrained expanding hydride plate exerts a tensile stress field in the matrix close to the edge of the hydride plate while a partially contracting hydride plate exerts a tensile stress field in the hydride plate as well as a large compressive stress in the surrounding matrix close to the edge of the hydride plate. It is suggested that a compressive stress component in the matrix acting normal to a partially shrinking hydride plate could possibly explain an enhanced resistance to hydride embrittlement of Zr-alloy at elevated temperature. (C) 2013 Elsevier B.V. All rights reserved.}},
author = {{Singh, R. N. and Khandelwal, H. K. and Bind, A. K. and Sunil, S. and Ståhle, Per}},
issn = {{1873-4936}},
keywords = {{Zr-alloy; Hydride embrittlement; Fracture toughness; Stress-field; Fully; constrained}},
language = {{eng}},
pages = {{157--163}},
publisher = {{Elsevier}},
series = {{Materials Science & Engineering: A}},
title = {{Influence of stress field of expanding and contracting plate shaped precipitate on hydride embrittlement of Zr-alloys}},
url = {{http://dx.doi.org/10.1016/j.msea.2013.04.117}},
doi = {{10.1016/j.msea.2013.04.117}},
volume = {{579}},
year = {{2013}},
}