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Effect of pre-deformation on the precipitation process and magnetic properties of Fe–Cu model alloys

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Abstract

The effect of pre-deformation on the precipitation process and magnetic properties of Fe–Cu model alloys was investigated. These specimens simulate irradiation embrittlement of nuclear reactor pressure vessel (RPV) steels. Fe–1 wt%Cu alloys with and without pre-deformation in solid-state solution were thermally aged at 773 K for various times and the evolution of hardness, conductivity, and microstructure were investigated. Pre-deformation enhanced Cu precipitation and caused precipitation at dislocations. The coercive force tended to decrease for the pre-deformed specimen and the underlying mechanism is discussed. The results obtained are related to the magnetic characteristics of irradiated RPV steels.

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Acknowledgement

This research was partly supported under contract with the Japan Nuclear Energy Safety Organization (JNES) and in part by a Grant-in-Aid for Scientific Research (S), No. 141020345, and (B), No. 20360416, from the Ministry of Education, Culture, Sports, Science and Technology of Japan.

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Correspondence to Yasuhiro Kamada.

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Kamada, Y., Takahashi, S., Kikuchi, H. et al. Effect of pre-deformation on the precipitation process and magnetic properties of Fe–Cu model alloys. J Mater Sci 44, 949–953 (2009). https://doi.org/10.1007/s10853-008-3182-0

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  • DOI: https://doi.org/10.1007/s10853-008-3182-0

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