Adjusting recrystallization kinetics of WNiCo alloy by intensive shear strain
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F25%3A10257642" target="_blank" >RIV/61989100:27360/25:10257642 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0263436825001842?pes=vor&utm_source=scopus&getft_integrator=scopus" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0263436825001842?pes=vor&utm_source=scopus&getft_integrator=scopus</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijrmhm.2025.107219" target="_blank" >10.1016/j.ijrmhm.2025.107219</a>
Alternative languages
Result language
angličtina
Original language name
Adjusting recrystallization kinetics of WNiCo alloy by intensive shear strain
Original language description
The study investigates the effects of intensive shear strain processing, performed by selected regimes of rotary swaging, on recrystallization kinetics and deformation behaviour of a WNiCo tungsten heavy alloy. The results of uniaxial hot compression tests and thorough microstructure observations indicate that the selected rotary swaging regime, especially the swaging temperature, influences significantly not only the occurrence and development of dynamic hardening/softening processes, which consequently influence the flow stress, but also the recrystallization kinetics as such. The deformation temperature of 1100 °C was sufficient to initiate dynamic recrystallization in the Ni[sbnd]Co matrix, the average grain size within which decreased down to 1.9 μm. The deformation temperature of 1200 °C caused further softening within the matrix and intensified its plastic flow, which also supported joining of W agglomerates. Particularly the high swaging temperatures in combination with high strain rates (100 s−1) imparted flow stress maxima exceeding 1100 MPa. From the computational perspective, the complex effect of the occurring structure-forming phenomena on the behaviour of the WNiCo alloy was mapped by creating a rheological model, predicting its flow stress development under a wide range of temperatures. The rheological model was created via a regression analysis on the experimental data, and can serve as a basis for prospective numerical simulations using the finite element method. © 2025
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
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
International Journal of Refractory Metals and Hard Materials
ISSN
0263-4368
e-ISSN
2213-3917
Volume of the periodical
131
Issue of the periodical within the volume
107219
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
nestránkováno
UT code for WoS article
001490321700002
EID of the result in the Scopus database
2-s2.0-105004263897