Thermal stability and Ar plus ion irradiation behaviour of SLM AlSi10Mg alloy post-processed via KOBO extrusion method

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F25%3APU155118" target="_blank" >RIV/00216305:26210/25:PU155118 - isvavai.cz</a>

Result on the web

<a href="https://www.scopus.com/record/display.uri?eid=2-s2.0-85213965505&origin=resultslist&sort=plf-f&src=s&sot=b&sdt=b&s=AUTH%28Kotoul%29&relpos=0" target="_blank" >https://www.scopus.com/record/display.uri?eid=2-s2.0-85213965505&origin=resultslist&sort=plf-f&src=s&sot=b&sdt=b&s=AUTH%28Kotoul%29&relpos=0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10973-024-13940-9" target="_blank" >10.1007/s10973-024-13940-9</a>

Result language

angličtina

Original language name

Thermal stability and Ar plus ion irradiation behaviour of SLM AlSi10Mg alloy post-processed via KOBO extrusion method

Original language description

Ultra-fine-grained (UFG) and nanotwinned (NT) materials are anticipated to exhibit exceptional resistance to irradiation due to their significant volume fraction of grain boundaries. However, a notable drawback is their susceptibility to grain coarsening at elevated temperatures, which significantly limits their practical application as irradiation-resistant materials, particularly in high-temperature environments. In this study, an AlSi10Mg alloy, prepared using laser powder bed fusion (LPBF), underwent post-processing via the KOBO extrusion method, resulting in an ultra-fine-grained microstructure with an enhanced fraction of coincident site lattice (CSL) twin boundaries. The investigation was conducted in three phases. The first phase involved modelling radiation damage to gain insights into the expected behaviour of the microstructures under irradiation. The second phase included a comprehensive analysis of the microstructures of both as-built and KOBO-processed samples using light, scanning, and transmission electron microscopy. This analysis revealed an ultra-fine-grained microstructure with a mean grain size of approximately 0.8 mu m and an increase in the fraction of CSL boundaries from 30% in the as-built state to 42% following KOBO extrusion. In the third phase, the thermal stability of both samples was assessed through annealing experiments conducted for 1 h across a temperature range of 300-500 degrees C, with 50 degrees C intervals. To further explore the impact of the nanotwinned microstructure on thermal stability, irradiation experiments were conducted using 60 keV He+ ions to a dose of 5 x 1017 ions cm(-)2 at 130 degrees C. The results indicated an improved irradiation resistance in the KOBO-processed sample, as evidenced by a thinner sponge-like structure formation upon Ar+-ion irradiation compared to the as-built counterpart.

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

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OECD FORD branch

20501 - Materials engineering

Project

<a href="/en/project/EH22_008%2F0004634" target="_blank" >EH22_008/0004634: Mechanical engineering of biological and bio-inspired systems</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2025

Confidentiality

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

Name of the periodical

Journal of Thermal Analysis and Calorimetry

ISSN

1388-6150

e-ISSN

1588-2926

Volume of the periodical

neuveden

Issue of the periodical within the volume

leden 2025

Country of publishing house

HU - HUNGARY

Number of pages

22

Pages from-to

„“-„“

UT code for WoS article

001389310600001

EID of the result in the Scopus database

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