Detail publikace

Fatigue performance of hierarchically porous titanium scaffolds produced by additive manufacturing and its possible improvement by gas nitriding

SLÁMEČKA, K. KASHIMBETOVA, A. TKACHENKO, S. GEJDOŠ, P. POKLUDA, J. MONTUFAR JIMENEZ, E. ČELKO, L.

Originální název

Fatigue performance of hierarchically porous titanium scaffolds produced by additive manufacturing and its possible improvement by gas nitriding

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

This contribution focuses on the nitriding of hierarchically porous titanium scaffolds to enhance their fatigue behaviour. Firstly, recent experimental findings that demonstrate the benefits of intra-filament porosity in improving fatigue resistance are discussed, providing details on crack growth shielding micromechanisms. Subsequently, the study explores the application of titanium scaffolds nitriding as a promising technique to prolong fatigue crack initiation. The scaffolds, prepared using the direct ink writing method with intra-filament porosity of similar to 6% and inter-filament porosity of similar to 68%, underwent gas nitriding at 1100 degrees C for 2 h. This process resulted in the formation of a consistent 42 mu m thick nitriding case across the entire structure. Preliminary experiments showed a minimal decrease in fatigue strength within the low cycle fatigue region, attributed to the fracturing of a thick brittle compound zone under high applied loading. These results suggest that nitriding has the potential to improve fatigue performance after process optimization.

Klíčová slova

Fatigue crack propagation; Low-cycle fatigue; Nitriding; Optimization; Porosity; Scaffolds; Titanium

Autoři

SLÁMEČKA, K.; KASHIMBETOVA, A.; TKACHENKO, S.; GEJDOŠ, P.; POKLUDA, J.; MONTUFAR JIMENEZ, E.; ČELKO, L.

Vydáno

21. 6. 2023

Nakladatel

IOP PUBLISHING LTD

Místo

BRISTOL

ISSN

1742-6588

Periodikum

Journal of Physics: Conference Series

Ročník

2692

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany počet

7

URL

https://iopscience.iop.org/article/10.1088/1742-6596/2692/1/012044

BibTex

@inproceedings{BUT188688,
  author="Karel {Slámečka} and Adelia {Kashimbetova} and Serhii {Tkachenko} and Pavel {Gejdoš} and Jaroslav {Pokluda} and Edgar Benjamin {Montufar Jimenez} and Ladislav {Čelko}",
  title="Fatigue performance of hierarchically porous titanium scaffolds produced by additive manufacturing and its possible improvement by gas nitriding",
  booktitle="Journal of Physics: Conference Series",
  year="2023",
  journal="Journal of Physics: Conference Series",
  volume="2692",
  number="1",
  pages="7",
  publisher="IOP PUBLISHING LTD",
  address="BRISTOL",
  doi="10.1088/1742-6596/2692/1/012044",
  issn="1742-6588",
  url="https://iopscience.iop.org/article/10.1088/1742-6596/2692/1/012044"
}