Low dose fission neutron irradiation on P- and Ti-modified austenitic alloys with improved temperature control

N. Yoshida; Q. Xu; H. Watanabe; T. Muroga; M. Kiritani

doi:10.1016/0022-3115(92)90648-5

Low dose fission neutron irradiation on P- and Ti-modified austenitic alloys with improved temperature control

N. Yoshida, Q. Xu, H. Watanabe, T. Muroga, M. Kiritani

Division of Nuclear Fusion Dynamics

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

The initial process of microstructure evolution in Fe16Cr17Ni and its P- and Ti-modified variants was studied during irradiation in JMTR to 1.1×10²⁴ n/m² (> 1.0 MeV) under improved and conventional temperature control conditions. Interstitial loop density showed strong temperature dependence; the nominal activation energy for the loop nucleation process in the ternary alloy was about 0.5 eV. With addition of 0.024%P, the interstitial loop density increased very much, but void formation was suppressed considerably. In 0.1%P-alloy, Fe₂P was precipitated at 673 K instead of interstitial loops. In conventional temperature control irradiation, loop density was two to three times higher than that of improved control irradiation. This suggests the need for improvement of temperature control of fission reactor irradiation for understanding essential processes of damage evolution at the set temperature.

Original language	English
Pages (from-to)	1114-1118
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	191-194
Issue number	PART B
DOIs	https://doi.org/10.1016/0022-3115(92)90648-5
Publication status	Published - Sept 1992

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Materials Science(all)
Nuclear Energy and Engineering

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10.1016/0022-3115(92)90648-5

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title = "Low dose fission neutron irradiation on P- and Ti-modified austenitic alloys with improved temperature control",

abstract = "The initial process of microstructure evolution in Fe16Cr17Ni and its P- and Ti-modified variants was studied during irradiation in JMTR to 1.1×1024 n/m2 (> 1.0 MeV) under improved and conventional temperature control conditions. Interstitial loop density showed strong temperature dependence; the nominal activation energy for the loop nucleation process in the ternary alloy was about 0.5 eV. With addition of 0.024%P, the interstitial loop density increased very much, but void formation was suppressed considerably. In 0.1%P-alloy, Fe2P was precipitated at 673 K instead of interstitial loops. In conventional temperature control irradiation, loop density was two to three times higher than that of improved control irradiation. This suggests the need for improvement of temperature control of fission reactor irradiation for understanding essential processes of damage evolution at the set temperature.",

author = "N. Yoshida and Q. Xu and H. Watanabe and T. Muroga and M. Kiritani",

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T1 - Low dose fission neutron irradiation on P- and Ti-modified austenitic alloys with improved temperature control

AU - Yoshida, N.

AU - Xu, Q.

AU - Watanabe, H.

AU - Muroga, T.

AU - Kiritani, M.

PY - 1992/9

Y1 - 1992/9

N2 - The initial process of microstructure evolution in Fe16Cr17Ni and its P- and Ti-modified variants was studied during irradiation in JMTR to 1.1×1024 n/m2 (> 1.0 MeV) under improved and conventional temperature control conditions. Interstitial loop density showed strong temperature dependence; the nominal activation energy for the loop nucleation process in the ternary alloy was about 0.5 eV. With addition of 0.024%P, the interstitial loop density increased very much, but void formation was suppressed considerably. In 0.1%P-alloy, Fe2P was precipitated at 673 K instead of interstitial loops. In conventional temperature control irradiation, loop density was two to three times higher than that of improved control irradiation. This suggests the need for improvement of temperature control of fission reactor irradiation for understanding essential processes of damage evolution at the set temperature.

AB - The initial process of microstructure evolution in Fe16Cr17Ni and its P- and Ti-modified variants was studied during irradiation in JMTR to 1.1×1024 n/m2 (> 1.0 MeV) under improved and conventional temperature control conditions. Interstitial loop density showed strong temperature dependence; the nominal activation energy for the loop nucleation process in the ternary alloy was about 0.5 eV. With addition of 0.024%P, the interstitial loop density increased very much, but void formation was suppressed considerably. In 0.1%P-alloy, Fe2P was precipitated at 673 K instead of interstitial loops. In conventional temperature control irradiation, loop density was two to three times higher than that of improved control irradiation. This suggests the need for improvement of temperature control of fission reactor irradiation for understanding essential processes of damage evolution at the set temperature.

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Low dose fission neutron irradiation on P- and Ti-modified austenitic alloys with improved temperature control

Abstract

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