Selected properties of two high entropy alloys

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Selected properties of two high entropy alloys

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Selected properties of two high entropy alloys

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/LO1203" target="_blank" >LO1203: Regionální materiálově technologické výzkumné centrum - Program udržitelnosti</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

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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Počet stran výsledku

6

Strana od-do

700-705

Název nakladatele

Tanger

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

25. 5. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000391251200112