Detail publikace

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

MORAVČÍK, I. HADRABA, H. LI, L. DLOUHÝ, I. RAABE, D. LI, Z.

Originální název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

Interstitials,Strengthening,Alloying,Tension test,Concentrated solid solution

Autoři

MORAVČÍK, I.; HADRABA, H.; LI, L.; DLOUHÝ, I.; RAABE, D.; LI, Z.

Vydáno

1. 3. 2020

Nakladatel

Elsevier

Místo

London

ISSN

1359-6462

Periodikum

SCRIPTA MATERIALIA

Ročník

178

Číslo

178

Stát

Spojené státy americké

Strany od

391

Strany do

397

Strany počet

6

URL

https://www.sciencedirect.com/science/article/pii/S1359646219307262

BibTex

@article{BUT161601,
  author="Igor {Moravčík} and Hynek {Hadraba} and Linlin {Li} and Ivo {Dlouhý} and Dierk {Raabe} and Zhiming {Li}",
  title="Yield strength increase of a CoCrNi medium entropy alloy by interstitial nitrogen doping at maintained ductility",
  journal="SCRIPTA MATERIALIA",
  year="2020",
  volume="178",
  number="178",
  pages="391--397",
  doi="10.1016/j.scriptamat.2019.12.007",
  issn="1359-6462",
  url="https://www.sciencedirect.com/science/article/pii/S1359646219307262"
}