The Dispersion-Strengthening Effect of TiN NanoparticlesnEvoked by Ex Situ Nitridation of Gas-Atomized, NiCu-BasednAlloy 400 in Fluidized Bed Reactor for Laser Powder Bed Fusion

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F24%3A00598934" target="_blank" >RIV/68081723:_____/24:00598934 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/2504-4494/8/5/223" target="_blank" >https://www.mdpi.com/2504-4494/8/5/223</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/jmmp8050223" target="_blank" >10.3390/jmmp8050223</a>

Result language

angličtina

Original language name

The Dispersion-Strengthening Effect of TiN NanoparticlesnEvoked by Ex Situ Nitridation of Gas-Atomized, NiCu-BasednAlloy 400 in Fluidized Bed Reactor for Laser Powder Bed Fusion

Original language description

Throughout recent years, the implementation of nanoparticles into the microstructure ofnadditively manufactured (AM) parts has gained great attention in the material science community.nThe dispersion strengthening (DS) effect achieved leads to a substantial improvement in the mechani cal properties of the alloy used. In this work, an ex situ approach of powder conditioning prior to thenAM process as per a newly developed fluidized bed reactor (FBR) was applied to a titanium-enrichednvariant of the NiCu-based Alloy 400. Powders were investigated before and after FBR exposure,nand it was found that the conditioning led to a significant increase in the TiN formation along grainnboundaries. Manufactured to parts via laser-based powder bed fusion of metals (PBF-LB/M), the exnsitu FBR approach not only revealed a superior microstructure compared to unconditioned parts butnalso with respect to a recently introduced in situ approach based on a gas atomization reaction syn thesis (GARS). A substantially higher number of nanoparticles formed along cell walls and enablednan effective suppression of dislocation movement, resulting in excellent tensile, creep, and fatiguenproperties, even at elevated temperatures up to 750 ◦C. Such outstanding properties have never beenndocumented for AM-processed Alloy 400, which is why the demonstrated FBR ex situ conditioningnmarks a promising modification route for future alloy systems

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20501 - Materials engineering

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

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

Name of the periodical

Journal of Manufacturing and Materials Processing

ISSN

2504-4494

e-ISSN

2504-4494

Volume of the periodical

8

Issue of the periodical within the volume

5

Country of publishing house

CH - SWITZERLAND

Number of pages

29

Pages from-to

223

UT code for WoS article

001340933400001

EID of the result in the Scopus database

2-s2.0-85207683743