Study of defects introduced by 2 and 9 MeV electron irradiation in B2 type Fe-Al alloy

Youhei Ueno, Akihiro Iwase, Kazuhito Ohsawa, Xu Qiu, Koichi Sato, Yuichi Saitoh, Fuminobu Hori

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

It is well known that B2 type Fe-Al intermetallic compound alloy possibly includes more than two types of vacancies basically, that is Fe-vacancy and Al-vacancy. Although MeV ordered electron irradiation produces vacancies and interstitials, the threshold energy of displacement for each elemental atom in intermetallic alloys is not necessarily same. In this study, we performed positron annihilation lifetime and Doppler broadening measurements for different energy of electron irradiated B2 ordered Fe50%Al alloy. Different values of positron annihilation lifetime for 2 and 9 MeV electron irradiation were measured. Also, the Doppler broadening S and W parameters showed different changing trend for different energy of electron irradiation. These results suggest that selective atomic displacement takes place in Fe-Al ordered alloy by electron irradiation with different energies.

Original languageEnglish
Title of host publicationPositron Annihilation - ICPA-17
PublisherTrans Tech Publications Ltd
Pages126-129
Number of pages4
Volume373 DDF
ISBN (Print)9783038356059
DOIs
Publication statusPublished - Jan 1 2016
Event17th International Conference onPositron Annihilation, ICPA-17 - Wuhan, China
Duration: Sep 20 2016Sep 25 2016

Other

Other17th International Conference onPositron Annihilation, ICPA-17
CountryChina
CityWuhan
Period9/20/169/25/16

All Science Journal Classification (ASJC) codes

  • Radiation
  • Materials Science(all)
  • Condensed Matter Physics

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