Yield strength increase of a CoCrNi medium entropy alloy by interstitial nitrogen doping at maintained ductility

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F20%3A00524466" target="_blank" >RIV/68081723:_____/20:00524466 - isvavai.cz</a>
Alternative codes found
RIV/00216305:26210/19:PU135041
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S1359646219307262" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1359646219307262</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.scriptamat.2019.12.007" target="_blank" >10.1016/j.scriptamat.2019.12.007</a>

Result language
angličtina
Original language name
Yield strength increase of a CoCrNi medium entropy alloy by interstitial nitrogen doping at maintained ductility
Original language description
We show that interstitial nitrogen doping improves the tensile properties of a CoCrNi alloy. A material with 0.5 at% interstitial nitrogen was compared to a nitrogen-free CoCrNi alloy. The nitrogen-doped variant has a stable, single-phase face-centered cubic (FCC) lattice structure without nitrides, also after different annealing treatments (800–900 °C, 10 and 30 min). The nitrogen caused an increase in yield strength by 24–33% at identical ductility compared to the nitrogen-free material with similar grain size. The strengthening effect of nitrogen was explained in terms of the simultaneous increase of the lattice friction stress and of the Hall-Petch coefficient.
Czech name
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Czech description
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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

Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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