Selected properties of two high entropy alloys

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F16%3A86099140" target="_blank" >RIV/61989100:27360/16:86099140 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Selected properties of two high entropy alloys
Original language description
The work deals with two types of high entropy alloys (HEAs) of Fe2.5CrCuMnNi and Fe4CrCuMnNi type, which were laboratory synthesized by vacuum arc-melting method. Much cheaper Fe of higher portion replaced cobalt in high entropy alloy of CoCuCrMnNi type. Tensile tests and micro-hardness for both HEAs and a susceptibility to hydrogen induced cracking for Fe4CrCuMnNi were carried. Reached results in as cast state of both HEAs were compared each other. Mechanical properties were more favourable in case of Fe4CrCuMnNi. On average, yield stress was by 29 % higher, strength insignificantly lover by 14 MPa, while ductility by 2 % higher. Micro-hardness HV0.5 showed higher level in case of alloy with higher Fe content. Regarding hydrogen induced cracking of Fe4CrCuMnNi alloy under conditions in accord with NACE Standard TM0284-2013, Item No. 21215 the exposed samples were without any defects, even when length of sample was approx. 15 mm and diameter 3 mm only. Using Ni and Cr equivalents FCC+ BCC and/or BCC solid solution structures were found out. Microstructure, segregation and micro-fracture investigations were part of solution.
Czech name
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Czech description
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Project
<a href="/en/project/LO1203" target="_blank" >LO1203: Regional Materials Science and Technology Centre - Feasibility Program</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
METAL 2016: conference proceedings : (reviewed version) : 25th Anniversary International Conference on Metallurgy and Materials : May 25th-27th 2016, Hotel Voronez I, Brno, Czech Republic, EU
ISBN
978-80-87294-67-3
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
700-705
Publisher name
Tanger
Place of publication
Ostrava
Event location
Brno
Event date
May 25, 2016
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000391251200112

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