Irradiation-enhanced Cu-precipitation in Fe-Cu alloys studied by positron annihilation spectroscopy and electrical resistivity measurement

T. Onitsuka, M. Takenaka, H. Abe, E. Kuramoto, H. Ohkubo, Y. Nagai, M. Hasegawa

研究成果: Conference contribution

5 被引用数 (Scopus)

抄録

The positron annihilation measurements (CDB and positron lifetime measurement) and the electrical resistivity measurement were made for the isochronal annealing process of the Fe-Cu alloy specimens irradiated with electrons at low temperature. The peak in the high momentum region in CDB ratio curve grows prominently, showing the formation of Cu precipitates. W-parameter in the S-W plot already started to increase at 150K in Fe-0,6wt%Cu alloy specimens. The vacancy component I2 in the lifetime spectrum is kept almost constant beyond stage ID (110K) to about 300K, In the electrical resistivity measurement prominent recovery peaks appear at about 140K and 155K and these peak temperatures decrease with increasing Cu concentration. These results show that even at low temperature region below stage III self-interstitial atoms (SIAs) contribute to the formation of Cu precipitates through the mixed dumbbell mechanism and beyond stage III vacancies mainly contribute.

本文言語English
ホスト出版物のタイトルPositron Annihilation
ホスト出版物のサブタイトルProceedings of the 13th International Conference on Positron Annihilation, ICPA-13
編集者Toshio Hyodo, Haruo Saito, Yoshinori Kobayashi, Yasuyuki Nagashima
出版社Trans Tech Publications Ltd
ページ168-170
ページ数3
ISBN(印刷版)9780878499366
DOI
出版ステータスPublished - 2004
イベントPositron Annihilation: Proceedings of the 13th International Conference on Positron Annihilation, ICPA-13 - Kyoto, Japan
継続期間: 2003 9 72003 9 12

出版物シリーズ

名前Materials Science Forum
445-446
ISSN(印刷版)0255-5476
ISSN(電子版)1662-9752

Other

OtherPositron Annihilation: Proceedings of the 13th International Conference on Positron Annihilation, ICPA-13
CountryJapan
CityKyoto
Period03/9/703/9/12

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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