Charpy impact properties of reduced-activation ferritic/martensitic steels irradiated in HFIR up to 20 DPA

H. Tanigawa; K. Shiba; M. A. Sokolov; R. L. Klueh

doi:10.13182/FST44-206

Charpy impact properties of reduced-activation ferritic/martensitic steels irradiated in HFIR up to 20 DPA

H. Tanigawa, K. Shiba, M. A. Sokolov, R. L. Klueh

Advanced Nuclear Materials

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Abstract

The effects of irradiation up to 20 dpa on the Charpy impact properties of reduced-activation ferritic/martensitic steels (RAFs) were investigated. The ductile-brittle transition temperature (DBTT) of F82H-IEA shifted up to around 323K. TIG weldments of F82H showed a fairly small variation on their impact properties. A finer prior austenite grain size in F82H-IEA after a different heat treatment resulted in a 20K lower DBTT compared to F82H-IEA after the standard heat treatment, and that effect was maintained even'after irradiation. Helium effects were investigated utilizing Ni-doped F82H, but no obvious evidence of helium effects - was obtained. ORNL9Cr-2WVTa and JLF-1 steels showed smaller DBTT shifts compared to F82H-IEA.

Original language	English
Pages (from-to)	206-210
Number of pages	5
Journal	Fusion Science and Technology
Volume	44
Issue number	1
DOIs	https://doi.org/10.13182/FST44-206
State	Published - Jul 2003

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abstract = "The effects of irradiation up to 20 dpa on the Charpy impact properties of reduced-activation ferritic/martensitic steels (RAFs) were investigated. The ductile-brittle transition temperature (DBTT) of F82H-IEA shifted up to around 323K. TIG weldments of F82H showed a fairly small variation on their impact properties. A finer prior austenite grain size in F82H-IEA after a different heat treatment resulted in a 20K lower DBTT compared to F82H-IEA after the standard heat treatment, and that effect was maintained even'after irradiation. Helium effects were investigated utilizing Ni-doped F82H, but no obvious evidence of helium effects - was obtained. ORNL9Cr-2WVTa and JLF-1 steels showed smaller DBTT shifts compared to F82H-IEA.",

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AU - Tanigawa, H.

AU - Shiba, K.

AU - Sokolov, M. A.

AU - Klueh, R. L.

PY - 2003/7

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Charpy impact properties of reduced-activation ferritic/martensitic steels irradiated in HFIR up to 20 DPA

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