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Critical evaluation of the small punch test as a screening procedure for mechanical properties

Abstract:
All rights reserved.Within a collective exercise, a systematic and statistically based analysis of the repeatability and device dependence of small punch test results was performed. An unirradiated ferritic-martensitic steel T91 was selected for this. The test results allowed an evaluation of accuracy and reliability of material properties extracted from load-displacement-based and energy-based parameters. In a second step, neutron irradiated T91 with doses of 2.3 and 4 dpa was investigated in the temperature range -165°C to 300°C. The effects of test temperature and irradiation on the load-displacement curves and on the derived parameters were analysed. It was found that the small punch test is well suited for estimation of neutron embrittlement in cases of small amounts of available material or high activity. The preferred procedure for that purpose was specified.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1016/j.jnucmat.2015.07.029

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Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Role:
Author


Publisher:
Elsevier
Journal:
Journal of Nuclear Materials More from this journal
Volume:
472
Pages:
186-195
Publication date:
2015-07-20
Acceptance date:
2015-07-17
DOI:
ISSN:
0022-3115


Keywords:
Pubs id:
pubs:550352
UUID:
uuid:b0356390-78e2-449d-9d88-770e9bd4f196
Local pid:
pubs:550352
Source identifiers:
550352
Deposit date:
2017-06-02

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