Annealing behaviour of reactor pressure-vessel steels studied by positron-annihilation spectroscopy, Mossbauer spectroscopy and transmission electron microscopy

V. Slugeǹ; D. Segers; P. M.A. De Bakker; E. De Grave; V. Magula; T. Van Hoecke; B. Van Waeyenberge

doi:10.1016/S0022-3115(99)00073-2

Annealing behaviour of reactor pressure-vessel steels studied by positron-annihilation spectroscopy, Mossbauer spectroscopy and transmission electron microscopy

V. Slugeǹ, D. Segers, P. M.A. De Bakker, E. De Grave, V. Magula, T. Van Hoecke, B. Van Waeyenberge

Research output › peer-review

Abstract

The annealing behaviour of commonly used reactor pressure-vessel steels was studied using positron-annihilation spectroscopy (PAS) (lifetime and Doppler broadening techniques), transmission Mossbauer spectroscopy (MS), integral low-energy electron MS (ILEEMS) and transmission electron microscopy (TEM). The results of these methods applied to different types of steels are discussed. Some significant differences in the experimental results are observed between the Russian (3 types) and Western Europe (5 types) steels and between individual specimens within these two groups. All specimens were annealed in vacuum and studied after this thermal treatment. It was confirmed that the heat affected zone (HAZ) is the most sensitive region for thermal and neutron irradiation-induced embrittlement in the reactor. Positron-annihilation lifetime measurements on HAZ specimens annealed at successively higher temperatures show the drastic increase in the vacancy-type defect formation between 525°C and 600°C. Therefore these specimens were selected for further detailed studies by TEM.

Original language	English
Pages (from-to)	273-286
Number of pages	14
Journal	Journal of Nuclear Materials
Volume	274
Issue number	3
DOIs	https://doi.org/10.1016/S0022-3115(99)00073-2
State	Published - Sep 1999

Funding

The authors would like to thank NATO (V. Slugeň Research Fellowship – 1996), IAEA (Research contract 9001/RBF), SGA (Grant No. 1/4286/97) and NFWO (Grant No. 32001493) for support.

Funders	Funder number
Not added	32001493
Not added	1/4286/97
International Atomic Energy Agency (IAEA)	9001/RBF

ASJC Scopus subject areas

Nuclear and High Energy Physics
General Materials Science
Nuclear Energy and Engineering

Access to Document

10.1016/S0022-3115(99)00073-2

Cite this

Slugeǹ, V., Segers, D., De Bakker, P. M. A., De Grave, E., Magula, V., Van Hoecke, T., & Van Waeyenberge, B. (1999). Annealing behaviour of reactor pressure-vessel steels studied by positron-annihilation spectroscopy, Mossbauer spectroscopy and transmission electron microscopy. Journal of Nuclear Materials, 274(3), 273-286. https://doi.org/10.1016/S0022-3115(99)00073-2

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title = "Annealing behaviour of reactor pressure-vessel steels studied by positron-annihilation spectroscopy, Mossbauer spectroscopy and transmission electron microscopy",

abstract = "The annealing behaviour of commonly used reactor pressure-vessel steels was studied using positron-annihilation spectroscopy (PAS) (lifetime and Doppler broadening techniques), transmission Mossbauer spectroscopy (MS), integral low-energy electron MS (ILEEMS) and transmission electron microscopy (TEM). The results of these methods applied to different types of steels are discussed. Some significant differences in the experimental results are observed between the Russian (3 types) and Western Europe (5 types) steels and between individual specimens within these two groups. All specimens were annealed in vacuum and studied after this thermal treatment. It was confirmed that the heat affected zone (HAZ) is the most sensitive region for thermal and neutron irradiation-induced embrittlement in the reactor. Positron-annihilation lifetime measurements on HAZ specimens annealed at successively higher temperatures show the drastic increase in the vacancy-type defect formation between 525°C and 600°C. Therefore these specimens were selected for further detailed studies by TEM.",

author = "V. Slugeǹ and D. Segers and {De Bakker}, {P. M.A.} and {De Grave}, E. and V. Magula and {Van Hoecke}, T. and {Van Waeyenberge}, B.",

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Slugeǹ, V, Segers, D, De Bakker, PMA, De Grave, E, Magula, V, Van Hoecke, T & Van Waeyenberge, B 1999, 'Annealing behaviour of reactor pressure-vessel steels studied by positron-annihilation spectroscopy, Mossbauer spectroscopy and transmission electron microscopy', Journal of Nuclear Materials, vol. 274, no. 3, pp. 273-286. https://doi.org/10.1016/S0022-3115(99)00073-2

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