Modelling mechanical properties of nitrided microporous titanium

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F25%3A00643878" target="_blank" >RIV/68081723:_____/25:00643878 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.prostr.2025.10.038" target="_blank" >http://dx.doi.org/10.1016/j.prostr.2025.10.038</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.prostr.2025.10.038" target="_blank" >10.1016/j.prostr.2025.10.038</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Modelling mechanical properties of nitrided microporous titanium

Popis výsledku v původním jazyce

Direct ink writing of titanium followed by sintering enables fabrication of architectured lattices with open-porous filaments, which are promising candidates for biomedical and engineering applications. Low-temperature gas nitriding at 500 °C and 600 °C for 10 h produces volumetric titanium nitride coatings that enhance flexural modulus without sacrificing flexural strength, whereas nitriding at 700 °C markedly reduces strength due to the extensive formation of brittle compound layers. To elucidate the mechanistic origins of this strength reduction, this work presents a finite-element model of a single nitrided titanium sintering neck, a fundamental load-bearing unit in these microporous materials. The model incorporates experimentally measured thicknesses of the diffusion zone (DZ) and titanium nitride compound layer, as well as graded material properties in the DZ derived from theoretical nitrogen concentration profiles. Simulations of cooling from the nitriding temperature followed by tensile loading yield residual stress distributions and effective composite responses, providing a quantitative foundation for future fracture-mechanics modelling of sintering neck failure.

Název v anglickém jazyce

Modelling mechanical properties of nitrided microporous titanium

Popis výsledku anglicky

Direct ink writing of titanium followed by sintering enables fabrication of architectured lattices with open-porous filaments, which are promising candidates for biomedical and engineering applications. Low-temperature gas nitriding at 500 °C and 600 °C for 10 h produces volumetric titanium nitride coatings that enhance flexural modulus without sacrificing flexural strength, whereas nitriding at 700 °C markedly reduces strength due to the extensive formation of brittle compound layers. To elucidate the mechanistic origins of this strength reduction, this work presents a finite-element model of a single nitrided titanium sintering neck, a fundamental load-bearing unit in these microporous materials. The model incorporates experimentally measured thicknesses of the diffusion zone (DZ) and titanium nitride compound layer, as well as graded material properties in the DZ derived from theoretical nitrogen concentration profiles. Simulations of cooling from the nitriding temperature followed by tensile loading yield residual stress distributions and effective composite responses, providing a quantitative foundation for future fracture-mechanics modelling of sintering neck failure.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20506 - Coating and films

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název statě ve sborníku

Procedia Structural Integrity

ISBN

—

ISSN

2452-3216

e-ISSN

—

Počet stran výsledku

6

Strana od-do

"Roč. 74 (2025)"

Název nakladatele

Elsevier B.V.

Místo vydání

Amsterdam

Místo konání akce

Brno

Datum konání akce

23. 6. 2025

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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