Microstructure and Room Temperature Mechanical Properties of Different 3 and 4 Element Medium Entropy Alloys from HfNbTaTiZr System
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F19%3A00509918" target="_blank" >RIV/61389021:_____/19:00509918 - isvavai.cz</a>
Alternative codes found
RIV/60193247:_____/19:N0000001 RIV/00216208:11320/19:10404077
Result on the web
<a href="https://www.mdpi.com/1099-4300/21/2/114" target="_blank" >https://www.mdpi.com/1099-4300/21/2/114</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/e21020114" target="_blank" >10.3390/e21020114</a>
Alternative languages
Result language
angličtina
Original language name
Microstructure and Room Temperature Mechanical Properties of Different 3 and 4 Element Medium Entropy Alloys from HfNbTaTiZr System
Original language description
Refractory high entropy alloys (HEA) are promising materials for high temperature applications. This work presents investigations of the room temperature tensile mechanical properties of selected 3 and 4 elements medium entropy alloys (MEA) derived from the HfNbTaTiZr system. Tensile testing was combined with fractographic and microstructure analysis, using scanning electron microscope (SEM), wavelength dispersive spectroscope (WDS) and X-Ray powder diffraction (XRD). The 5 element HEA alloy HfNbTaTiZr exhibits the best combination of strength and elongation while 4 and 3 element MEAs have lower strength. Some of them are ductile, some of them brittle, depending on microstructure. Simultaneous presence of Ta and Zr in the alloy resulted in a significant reduction of ductility caused by reduction of the BCC phase content. Precipitation of Ta rich particles on grain boundaries reduces further the maximum elongation to failure down to zero values.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20501 - Materials engineering
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Entropy
ISSN
1099-4300
e-ISSN
—
Volume of the periodical
21
Issue of the periodical within the volume
2
Country of publishing house
CH - SWITZERLAND
Number of pages
17
Pages from-to
114
UT code for WoS article
000460742200015
EID of the result in the Scopus database
2-s2.0-85061986819