Facilitated low-temperature continuous dynamic recrystallization in selectively laser melted AlSi10Mg alloy

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10511305" target="_blank" >RIV/00216208:11320/25:10511305 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=peBaLTcelu" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=peBaLTcelu</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jallcom.2025.183371" target="_blank" >10.1016/j.jallcom.2025.183371</a>

Result language
angličtina
Original language name
Facilitated low-temperature continuous dynamic recrystallization in selectively laser melted AlSi10Mg alloy
Original language description
Recrystallization in conventionally cast AlSi10Mg typically occurs at elevated temperatures due to coarse grains and low dislocation densities, with most studies reporting dynamic recrystallization onset above 300-400 degrees C. In contrast, Selective Laser Melting (SLM) produces a fine cellular substructure with high dislocation density and residual stresses, which reduces the energy barrier for recrystallization. This study investigates the microstructural evolution of SLMed AlSi10Mg during compressive deformation at 100 degrees C. The fraction of fine grains increases from 31.8 % to 60.6 %, accompanied by a rise in low-angle grain boundaries from 10.9 % to 32.3 %. Kernel Average Misorientation and Grain Orientation Spread maps confirm the activation of continuous dynamic recrystallization, even at this low temperature. Notably, the stress-strain curves exhibit clear flow softening behavior at 100 degrees C, with a softening fraction exceeding 10 %. The results demonstrate that the substructure developed during SLM facilitates low-temperature recrystallization, and contributes directly to the observed flow softening.
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
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

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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