Quenched-in vacancies in Fe-AL alloys
Quenched-in vacancies in Fe-AL alloys
Melikhova, O.; Cizek, J.; Prochazka, I.; Kuriplach, J.; Lukac, F.; Cieslar, M.; Brauer, G.; Anwand, W.
Quenched-in vacancies in Fe3Al-based intermetallics were studied in this work. A stoichiometric Fe3Al alloy was compared with non-stoichiometric specimens either with a deficiency or with an excess in Al content. Vacancies in specimens quenched from the disordered A2 phase were investigated by three independent techniques of positron annihilation spectroscopy: positron lifetime (LT) studies, slow positron implantation spectroscopy (SPIS) with a continuous slow positron beam, and coincidence Doppler broadening (CDB). It was found that the combination of LT and SPIS enables to determine reliably even very high concentrations of vacancies. Infor-mation about the local chemical environment of quenched-in vacancies was obtained from CDB measurements.
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Physica Status Solidi (C) 6(2009)11, 2367-2369
DOI: 10.1002/pssc.200982063
Cited 4 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-13344