Effect of pre-deformation on the precipitation process and magnetic properties of Fe–Cu model alloys |
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Authors: | Yasuhiro Kamada Seiki Takahashi Hiroaki Kikuchi Satoru Kobayashi Katsuyuki Ara Junichi Echigoya Yusuke Tozawa Kenta Watanabe |
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Affiliation: | (1) NDE & Science Research Center, Faculty of Engineering, Iwate University, Morioka 020-8551, Japan |
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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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