Modelling mechanical properties of nitrided microporous titanium

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
Modelling mechanical properties of nitrided microporous titanium
Original language description
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.
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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