Selective laser melting of 18Ni-300 maraging steel

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F20%3A10245610" target="_blank" >RIV/61989100:27230/20:10245610 - isvavai.cz</a>
Result on the web
<a href="https://www.mdpi.com/1996-1944/13/20/4557" target="_blank" >https://www.mdpi.com/1996-1944/13/20/4557</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/MA13194268" target="_blank" >10.3390/MA13194268</a>

Result language
angličtina
Original language name
Selective laser melting of 18Ni-300 maraging steel
Original language description
In the present study, 18% Ni 300 maraging steel powder was processed using a selective laser melting (SLM) technique to study porosity variations, microstructure, and hardness using various process conditions, while maintaining a constant level of energy density. Nowadays, there is wide range of utilization of metal technologies and its products can obtain high relative density. A dilatometry study revealed that, through heating cycles, two solid-state effects took place, i.e., precipitation of intermetallic compounds and the reversion of martensite to austenite. During the cooling process, one reaction took place (i.e., martensitic transformation), which was confirmed by microstructure observation. The improvements in the Rockwell hardness of the analyzed material from 42 +- 2 to 52 +- 0.5 HRC was improved as a result of aging treatment at 480 oC for 5 h. The results revealed that the relative density increased using laser speed (340 mm/s), layer thickness (30 μm), and hatch distance (120 μm). Relative density was found approximately 99.3%. Knowledge about the influence of individual parameters in the SLM process on porosity will enable potential manufacturers to produce high quality components with desired properties. (C) 2020 by the authors.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20300 - Mechanical engineering

Project
<a href="/en/project/EF17_049%2F0008407" target="_blank" >EF17_049/0008407: Innovative and additive manufacturing technology - new technological solutions for 3D printing of metals and composite materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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