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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F23%3APU151392" target="_blank" >RIV/00216305:26620/23:PU151392 - isvavai.cz</a>

Výsledek na webu

<a href="https://iopscience.iop.org/article/10.1088/1742-6596/2692/1/012044" target="_blank" >https://iopscience.iop.org/article/10.1088/1742-6596/2692/1/012044</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1742-6596/2692/1/012044" target="_blank" >10.1088/1742-6596/2692/1/012044</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

21100 - Other engineering and technologies

Projekt

<a href="/cs/project/GA23-07879S" target="_blank" >GA23-07879S: Výzkum vlivu nitridace na únavové chování aditivně vyrobených titanových hierarchických porézních struktur</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Journal of Physics: Conference Series

ISBN

—

ISSN

1742-6588

e-ISSN

1742-6596

Počet stran výsledku

7

Strana od-do

„“-„“

Název nakladatele

IOP PUBLISHING LTD

Místo vydání

BRISTOL

Místo konání akce

Spetses

Datum konání akce

21. 6. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

001170169300044