Heat Treatment-Induced Microstructural Changes in Selectively Laser Melted

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F25%3A00643989" target="_blank" >RIV/68081723:_____/25:00643989 - isvavai.cz</a>
Result on the web
<a href="https://journalmt.com/artkey/mft-202506-0002_heat-treatment-induced-microstructural-changes-in-selectively-laser-melted-alsi10mg-alloy.php" target="_blank" >https://journalmt.com/artkey/mft-202506-0002_heat-treatment-induced-microstructural-changes-in-selectively-laser-melted-alsi10mg-alloy.php</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.21062/mft.2025.077" target="_blank" >10.21062/mft.2025.077</a>

Result language
angličtina
Original language name
Heat Treatment-Induced Microstructural Changes in Selectively Laser Melted
Original language description
The study examines the effect of various post-processing heat treatments on the microstructural evolution and hardness of the AlSi10Mg alloy produced by selective laser melting (SLM). The alloy was examined in the as-built (AB) condition and after three heat treatment regimes: direct aging (DA, 160 degrees C/5 h), stress relieving (SR, 300 degrees C/2 h), and solution annealing followed by artificial aging (SA, 520 degrees C/2 h + 170 degrees C/4 h) to better understand the solidification and consolidation processes. A multiscale characterization using OM, SEM, EBSD, TEM, and EDS was performed to reveal the changes in specific microstructures due to additive manufacturing and different levels of heat treatment. The AB state exhibited a fine cellular network of Si within an alpha-Al matrix, and high hardness (approx. 138 HV1). The DA treatment preserved cellular morphology with mild coarsening, whereas SR led to partial fragmentation of the Si network and a significant drop in hardness (approx. 83 HV1). The SA condition caused recrystallization, Si spheroidization, and formation of Mg-and Fe-rich precipitates, accompanied by moderate hardness recovery (approx. 104 HV1). The persistent crystallographic texture was confirmed across all states.
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
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OECD FORD branch
20501 - Materials engineering

Project
<a href="/en/project/GA23-05372S" target="_blank" >GA23-05372S: Surface and subsurface erosion due to multiple droplet impingement</a><br>
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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