Hot deformation behaviour and microstructure evolution of TiAl-based alloy reinforced with carbide particles
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F20%3A10246452" target="_blank" >RIV/61989100:27360/20:10246452 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0966979520308669" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0966979520308669</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.intermet.2020.106962" target="_blank" >10.1016/j.intermet.2020.106962</a>
Alternative languages
Result language
angličtina
Original language name
Hot deformation behaviour and microstructure evolution of TiAl-based alloy reinforced with carbide particles
Original language description
The hot deformation behaviour and microstructure evolution of TiAl-based alloy with nominal composition TT 43Al-8Nb-3.6C-0.7Mo (at.%) reinforced with carbide particles were studied. The compression tests were carried out in the temperature range from 900 to 1000 degrees C and strain rates from 0.0001 to 0.01 s(-1) up to a true strain of 0.5. The microstructure of the compression specimens was characterised using scanning electron microscopy (SEM), transmission electron microscopy (TEM), and electron backscatter diffraction (EBSD). The work hardening stage of the flow curves results from an increment of the dislocation density and deformation twins. The work softening of the composite results from the dynamic recovery (DRV), dynamic recrystallization (DRX) and fragmentation of some coarse Ti2AlC particles. The size of recrystallised grains increases with decreasing Zener-Hollomon parameter. The non-uniform distribution of local strains in the deformed specimens and deformation temperature affect the orientation and fragmentation of coarse Ti2AlC particles. A constitutive model predicting hot deformation behaviour of the studied alloy is proposed and its validity is evaluated and discussed.
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
20500 - Materials engineering
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Intermetallics
ISSN
0966-9795
e-ISSN
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Volume of the periodical
127
Issue of the periodical within the volume
prosinec 2020
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
106962
UT code for WoS article
000587915700007
EID of the result in the Scopus database
2-s2.0-85091970118