Radiation effects on low cycle fatigue properties of reduced activation ferritic/martensitic steels

T. Hirose; H. Tanigawa; M. Ando; A. Kohyama; Y. Katoh; M. Narui

doi:10.1016/S0022-3115(02)01199-6

Radiation effects on low cycle fatigue properties of reduced activation ferritic/martensitic steels

T. Hirose, H. Tanigawa, M. Ando, A. Kohyama, Y. Katoh, M. Narui

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23 Scopus citations

Abstract

The reduced activation ferritic/martensitic steel, RAFs F82H IEA heat has been fatigue-tested at ambient temperature under diametral strain controlled conditions. In order to evaluate the effects of radiation damage and transmutation damage on fatigue characteristics, post-neutron irradiation and post-helium ion implantation fatigue tests were carried out. Fracture surfaces and fatigue crack initiation on the specimen surface were observed by SEM. Low-temperature irradiation caused an increase in stress amplitude and a reduction in fatigue lifetime corresponding to radiation hardening and loss of ductility. Neutron irradiated samples showed brittle fracture surface, and it was significant for large strain tests. On the other hand, helium implantation caused delay of cyclic softening. However, brittle crack initiation and propagation did not depend on the helium concentration profiles.

Original language	English
Pages (from-to)	304-307
Number of pages	4
Journal	Journal of Nuclear Materials
Volume	307-311
Issue number	1 SUPPL.
DOIs	https://doi.org/10.1016/S0022-3115(02)01199-6
State	Published - Dec 2002
Externally published	Yes

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title = "Radiation effects on low cycle fatigue properties of reduced activation ferritic/martensitic steels",

abstract = "The reduced activation ferritic/martensitic steel, RAFs F82H IEA heat has been fatigue-tested at ambient temperature under diametral strain controlled conditions. In order to evaluate the effects of radiation damage and transmutation damage on fatigue characteristics, post-neutron irradiation and post-helium ion implantation fatigue tests were carried out. Fracture surfaces and fatigue crack initiation on the specimen surface were observed by SEM. Low-temperature irradiation caused an increase in stress amplitude and a reduction in fatigue lifetime corresponding to radiation hardening and loss of ductility. Neutron irradiated samples showed brittle fracture surface, and it was significant for large strain tests. On the other hand, helium implantation caused delay of cyclic softening. However, brittle crack initiation and propagation did not depend on the helium concentration profiles.",

author = "T. Hirose and H. Tanigawa and M. Ando and A. Kohyama and Y. Katoh and M. Narui",

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T1 - Radiation effects on low cycle fatigue properties of reduced activation ferritic/martensitic steels

AU - Hirose, T.

AU - Tanigawa, H.

AU - Ando, M.

AU - Kohyama, A.

AU - Katoh, Y.

AU - Narui, M.

PY - 2002/12

Y1 - 2002/12

N2 - The reduced activation ferritic/martensitic steel, RAFs F82H IEA heat has been fatigue-tested at ambient temperature under diametral strain controlled conditions. In order to evaluate the effects of radiation damage and transmutation damage on fatigue characteristics, post-neutron irradiation and post-helium ion implantation fatigue tests were carried out. Fracture surfaces and fatigue crack initiation on the specimen surface were observed by SEM. Low-temperature irradiation caused an increase in stress amplitude and a reduction in fatigue lifetime corresponding to radiation hardening and loss of ductility. Neutron irradiated samples showed brittle fracture surface, and it was significant for large strain tests. On the other hand, helium implantation caused delay of cyclic softening. However, brittle crack initiation and propagation did not depend on the helium concentration profiles.

AB - The reduced activation ferritic/martensitic steel, RAFs F82H IEA heat has been fatigue-tested at ambient temperature under diametral strain controlled conditions. In order to evaluate the effects of radiation damage and transmutation damage on fatigue characteristics, post-neutron irradiation and post-helium ion implantation fatigue tests were carried out. Fracture surfaces and fatigue crack initiation on the specimen surface were observed by SEM. Low-temperature irradiation caused an increase in stress amplitude and a reduction in fatigue lifetime corresponding to radiation hardening and loss of ductility. Neutron irradiated samples showed brittle fracture surface, and it was significant for large strain tests. On the other hand, helium implantation caused delay of cyclic softening. However, brittle crack initiation and propagation did not depend on the helium concentration profiles.

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U2 - 10.1016/S0022-3115(02)01199-6

DO - 10.1016/S0022-3115(02)01199-6

M3 - Article

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SN - 0022-3115

VL - 307-311

SP - 304

EP - 307

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1 SUPPL.

ER -

Radiation effects on low cycle fatigue properties of reduced activation ferritic/martensitic steels

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