Irradiation hardening and microstructaral evolution in Fe-Cu model aloys

Takeshi Kitao, Ryuta Kasada, Akihiko Kimura, Hayato Nakata, Kouji Fukuya, Hideki Matsui, Minoru Narui

研究成果: ジャーナルへの寄稿会議記事査読

5 被引用数 (Scopus)

抄録

Irradiation hardening and microstructural evolution under neutron and electron irradiation have been investigated for pure-Fe and Fe-Cu model alloys. Neutron and electron irradiations were performed in the Japan Material Test Reactor (JMTR) and with using Phodtron electron accelerator at about 290°C and 270±30°C, respectively. Irradiation hardening of pure-Fe and Fe-Cu model alloys is saturated at about 1 × 10-3 dpa in both the neutron and electron irradiation. Irradiation hardening recovered in two temperature ranges. The recovery in the lower temperature range depends on copper concentration and electron irradiation dose, while the recovery at a higher temperature range does not. Recovery behavior of the irradiation hardening suggests indirectly that copper atoms suppress the growth of interstitial clusters. The recovery behavior of positron lifetime does not coincide with that of the hardness, suggesting that the vacancy clusters are not the direct main factor controlling the hardening by matrix damages. irradiation hardening, matrix defect, copper-rich.

本文言語英語
ページ(範囲)365-375
ページ数11
ジャーナルASTM Special Technical Publication
1447
出版ステータス出版済み - 2004
イベントEffects of Radiation on Materials: 21st International Symposium - Tucson, AZ, 米国
継続期間: 2002 6月 182002 6月 20

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