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Vacancy-induced hardening in Fe-Al alloys
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SYSNO ASEP 0421498 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Vacancy-induced hardening in Fe-Al alloys Author(s) Lukáč, F. (CZ)
Čížek, J. (CZ)
Procházka, I. (CZ)
Jirásková, Yvonna (UFM-A) RID, ORCID
Janičkovič, D. (SK)
Anwand, W. (DE)
Brauer, G. (DE)Number of authors 7 Source Title Journal of Physics: Conference Series. - : Institute of Physics Publishing - ISSN 1742-6588
Roč. 443, č. 1 (2013), 012025Number of pages 4 s. Action International Conference on Positron Annihilation /16./ Event date 19.08.2012-24.08.2012 VEvent location Bristol Country GB - United Kingdom Event type WRD Language eng - English Country GB - United Kingdom Keywords Vacancy ; Hardening ; Fe-Al alloy Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects GAP108/11/1350 GA ČR - Czech Science Foundation (CSF) Institutional support UFM-A - RVO:68081723 UT WOS 000321739400025 DOI https://doi.org/10.1088/1742-6596/443/1/012025 Annotation Hardness of Fe-Al alloys shows a non-trivial dependence on chemical composition and thermal treatment of samples and cannot be fully explained by consideration of intermetallic phases formed according to the equilibrium phase diagram of Fe-Al system. Hardening in Fe- Al alloys caused by quenched-in non-equilibrium vacancies was studied in this work. Non- equilibrium vacancies introduced into the alloys by quenching from 1000 C were detected by means of positron annihilation spectroscopy. The concentration of quenched-in vacancies was found to strongly increase with increasing Al content from 10?5 at.?1 in the alloy with cAl = 18 at. % up to 10?1 at.?1 in the alloy with cAl = 45 at. %. Comparison of the vacancy concentration and the Vickers microhardness revealed that hardening is proportional to square root of concentration of quenched-in vacancies. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2014
Number of the records: 1