Spark plasma sintering of gas atomized high-entropy alloy HfNbTaTiZr
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60193247%3A_____%2F18%3AN0000007" target="_blank" >RIV/60193247:_____/18:N0000007 - isvavai.cz</a>
Alternative codes found
RIV/61389021:_____/18:00498202 RIV/00216208:11320/18:10389668
Result on the web
<a href="https://www.cambridge.org/core/journals/journal-of-materials-research/article/spark-plasma-sintering-of-gas-atomized-highentropy-alloy-hfnbtatizr/1BFF9A170BD02AA93CD87ADB9AB0A65D" target="_blank" >https://www.cambridge.org/core/journals/journal-of-materials-research/article/spark-plasma-sintering-of-gas-atomized-highentropy-alloy-hfnbtatizr/1BFF9A170BD02AA93CD87ADB9AB0A65D</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1557/jmr.2018.320" target="_blank" >10.1557/jmr.2018.320</a>
Alternative languages
Result language
angličtina
Original language name
Spark plasma sintering of gas atomized high-entropy alloy HfNbTaTiZr
Original language description
A homogeneous HfNbTaTiZr high-entropy alloy was successfully processed via powder metallurgy route. For the initial powder feedstock material fabrication, the electrode induction-melting gas atomization procedure was used, resulting in a spherical powder morphology and dual bcc phase composition distinguishable within the individual particles. Spark plasma sintering was then used for the powder compaction at sintering temperatures ranging from 800 to 1600 degrees C. By the characterization of the compact microstructures, lattice defects (microscopic porosity and vacancy-like misfit defects), and mechanical properties (hardness and three-point bending strength), the sintering conditions were optimized to obtain a fully dense, homogeneous, single-phase bcc material. It was found that such properties are achieved when sintering at 80 MPa pressure for 2 min at temperatures above 1200 degrees C, where the single bcc phase structure exhibited ductile behavior with considerable flexural strength and ductility at ambient temperature. Positron annihilation spectroscopy was used to characterize the evolution of atomic and mesoscale defects during optimization of the sintering process.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
<a href="/en/project/GA17-17016S" target="_blank" >GA17-17016S: Influence of defects on properties of bio-compatible high entropy alloys</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
JOURNAL OF MATERIALS RESEARCH
ISSN
0884-2914
e-ISSN
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Volume of the periodical
33
Issue of the periodical within the volume
19
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
3247-3257
UT code for WoS article
000452650400027
EID of the result in the Scopus database
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