2013年
Vacancy migration process in F82H and Fe-Cr binary alloy using positron annihilation lifetime measurement
16TH INTERNATIONAL CONFERENCE ON POSITRON ANNIHILATION (ICPA-16)
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- 巻
- 443
- 号
- 1
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1088/1742-6596/443/1/012031
- 出版者・発行元
- IOP PUBLISHING LTD
Microstructral evolution of electron-irradiated F82H and Fe-8%Cr at 77 K was studied using positron annihilation lifetime measurements. Irradiation-induced vacancies started to migrate at 300 K and 180 K in F82H and Fe-8%Cr, respectively. Solute Cr atoms did not suppress vacancy migration, but they made di-vacancies more stable. Microvoids were not formed by annealing. In F82H, solute atoms acted as trapping site of irradiation-induced defects and annihilation of vacancies and interstitials was facilitated. Pre-existing dislocations and precipitates were also their sinks. These lead to the suppression of microvoids formation. In Fe-8%Cr, small vacancy-type dislocation loops were formed by isochronal annealing test.
- リンク情報
- ID情報
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- DOI : 10.1088/1742-6596/443/1/012031
- ISSN : 1742-6588
- Web of Science ID : WOS:000321739400031