Tungsten Heavy Alloys from Mixed Feedstock by RF Plasma
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F23%3A00581973" target="_blank" >RIV/61389021:_____/23:00581973 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/23:00368601 RIV/00216208:11320/23:10476703
Result on the web
<a href="https://link.springer.com/article/10.1007/s11666-023-01647-6" target="_blank" >https://link.springer.com/article/10.1007/s11666-023-01647-6</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s11666-023-01647-6" target="_blank" >10.1007/s11666-023-01647-6</a>
Alternative languages
Result language
angličtina
Original language name
Tungsten Heavy Alloys from Mixed Feedstock by RF Plasma
Original language description
Tungsten heavy alloys (WHA) are particulate composites of spherical W particles embedded in a ductile Ni-rich matrix. In our study, pre-treated W and Ni feedstock powders were used to prepare three different compositions (all wt.%) for spraying: W-10Ni, W-20Ni for two different WHA, and W-65Ni for a matrix-only material without the reinforcing W particles. Using radio frequency inductively coupled plasma spraying (RF-ICP) method, low porosity deposits were obtained with ductility exceeding 5%. By a detailed study of the microstructure and the particle-matrix interfaces, the mechanism of the composite formation was identified: a rapid dissolution of W in the liquid Ni and a subsequent W particle solidification followed by the solidification of the matrix. The mechanical properties of the composites are defined by the Ni-rich matrix (tough and significantly stronger than pure Ni) with well bonded stiff W particles. The elastic behavior was related to the W content following the Reuss model, describing a layered composite modulus in a serial configuration. Contrary to this, in the plastic regime, all WHA exhibited nearly identical behavior regardless of the W content. In this regime, the deformation of the W particles reached several percent, indicating an extremely strong particle-matrix bonding. Last, the failure mechanisms of the materials were investigated, with the matrix behavior governing the fatigue failure, and particle-matrix decohesion dominating in the static loading at higher loads.
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
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
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 Thermal Spray Technology
ISSN
1059-9630
e-ISSN
1544-1016
Volume of the periodical
32
Issue of the periodical within the volume
8
Country of publishing house
DE - GERMANY
Number of pages
16
Pages from-to
2747-2762
UT code for WoS article
001060052200001
EID of the result in the Scopus database
2-s2.0-85168860965