Počet záznamů: 1
Quenched-in vacancies and hardening of Fe-Al intermetallics
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SYSNO ASEP 0541075 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Quenched-in vacancies and hardening of Fe-Al intermetallics Tvůrce(i) Prochazka, I. (CZ)
Vlasák, T. (CZ)
Čízek, J. (CZ)
Lukáč, František (UFP-V) ORCID
Liedke, M. O. (DE)
Anwand, W. (DE)
Jirásková, Y. (CZ)
Janičkovič, D. (SK)Celkový počet autorů 8 Zdroj.dok. Acta Physica Polonica A. - : Polska Akademia Nauk - ISSN 0587-4246
Roč. 137, č. 2 (2020), s. 255-259Poč.str. 5 s. Jazyk dok. eng - angličtina Země vyd. PL - Polsko Klíč. slova Fe-Al Intermetallics ; Hardening ; Quenched-in Vacancies Vědní obor RIV JG - Hutnictví, kovové materiály Obor OECD Materials engineering Způsob publikování Open access Institucionální podpora UFP-V - RVO:61389021 UT WOS 000529332100042 EID SCOPUS 85083816844 DOI 10.12693/APhysPolA.137.255 Anotace The role of vacancies in hardening of Fe-Al intermetallic alloys were studied in the present work for a wide range of Al concentrations from 20 to 50 at%. The alloys quenched from 1000 °C as well as those annealed subsequently at 520 °C for 1 h were subject to study. Slow-positron beam experiments combined with Vicker's microhardness tests were utilised. Hardness of Fe-Al alloys exhibited a somewhat complex dependence on Al content which could not be fully explained purely by consideration of intermetallic phases formed. This happens due to additional hardening effect caused by quenched-in vacancies. The concentrations of vacancies were estimated from positron back-diffusion data and found to rise for Al content above 25 at%. Correlation of vacancy concentrations with hardness data for the quenched and annealed alloys has revealed that hardening of alloys with a low Al content (< 30 at%) is originated predominantly by anti-phase boundaries while hardening induced by quenched-in vacancies dominates for alloys with a higher Al content (30-50 at%). Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2021 Elektronická adresa http://przyrbwn.icm.edu.pl/APP/PDF/137/app137z2p41.pdf
Počet záznamů: 1