Development of the Structure of Cemented Carbides during Their Processing by SLM and HIP
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F20%3AN0000025" target="_blank" >RIV/26722445:_____/20:N0000025 - isvavai.cz</a>
Alternative codes found
RIV/46747885:24620/20:00008049 RIV/49777513:23210/20:43960897
Result on the web
<a href="https://www.mdpi.com/2075-4701/10/11/1477" target="_blank" >https://www.mdpi.com/2075-4701/10/11/1477</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/met10111477" target="_blank" >10.3390/met10111477</a>
Alternative languages
Result language
angličtina
Original language name
Development of the Structure of Cemented Carbides during Their Processing by SLM and HIP
Original language description
The study focuses on microstructural evolution in a WC-Co powder mixture during Selective Laser Melting (SLM) and hot isostatic pressing (HIP) processing. This powder mixture contained a 13 +/- 0.6% weight fraction of Co binder and WC particles of mean size of 3.0 +/- 1.9 mu m. SLM of the mixture produced samples of various densities, depending on the volumetric energy density (VED) applied. High VED levels led to densities of up to 88%. The aspects affected by changes in VED included the pore density as well as the resulting types of phases and the size of WC phase particles. At high VED, the material began to develop cracks due to embrittlement. This had multiple causes: coarsening of alpha-phase (WC), evaporation of beta-phase (Co binder), and precipitation of eta-phase. At low VED levels, pores formed, typically of nonsymmetric shapes, with sizes larger than 500 mu m. Subsequent HIP processing led to an increased density, up to 96% of solid material. Contributions to this increased density were provided by structure transformations, namely, coarsening of alpha-phase by up to 1300% when compared to the powder grain size, and formation of eta-phase. The results provided a basis for steering further research to explore to a greater depth the SLM and HIP processing of selected WC-Co powder mixtures with as yet unused ranges of process parameters.
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
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
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
Metals
ISSN
2075-4701
e-ISSN
2075-4701
Volume of the periodical
10
Issue of the periodical within the volume
11
Country of publishing house
CH - SWITZERLAND
Number of pages
17
Pages from-to
1-17
UT code for WoS article
000593452500001
EID of the result in the Scopus database
2-s2.0-85095729127