Unravelling the multi-scale structure–property relationship of laser powder bed fusion processed and heat-treated AlSi10Mg

Abstract Tailoring heat treatments for Laser Powder Bed Fusion (LPBF) processed materials is critical to ensure superior and repeatable material properties for high-end applications. This tailoring requires in-depth understanding of the LPBF-processed material. Therefore, the current study aims at u...

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Autores principales:	P. Van Cauwenbergh, V. Samaee, L. Thijs, J. Nejezchlebová, P. Sedlák, A. Iveković, D. Schryvers, B. Van Hooreweder, K. Vanmeensel
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f4b1d320a83f4b82853cb50bd58a0cdf
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spelling	oai:doaj.org-article:f4b1d320a83f4b82853cb50bd58a0cdf2021-12-02T17:05:11ZUnravelling the multi-scale structure–property relationship of laser powder bed fusion processed and heat-treated AlSi10Mg10.1038/s41598-021-85047-22045-2322https://doaj.org/article/f4b1d320a83f4b82853cb50bd58a0cdf2021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-85047-2https://doaj.org/toc/2045-2322Abstract Tailoring heat treatments for Laser Powder Bed Fusion (LPBF) processed materials is critical to ensure superior and repeatable material properties for high-end applications. This tailoring requires in-depth understanding of the LPBF-processed material. Therefore, the current study aims at unravelling the threefold interrelationship between the process (LPBF and heat treatment), the microstructure at different scales (macro-, meso-, micro-, and nano-scale), and the macroscopic material properties of AlSi10Mg. A similar solidification trajectory applies at different length scales when comparing the solidification of AlSi10Mg, ranging from mould-casting to rapid solidification (LPBF). The similarity in solidification trajectories triggers the reason why the Brody-Flemings cellular microsegregation solidification model could predict the cellular morphology of the LPBF as-printed microstructure. Where rapid solidification occurs at a much finer scale, the LPBF microstructure exhibits a significant grain refinement and a high degree of silicon (Si) supersaturation. This study has identified the grain refinement and Si supersaturation as critical assets of the as-printed microstructure, playing a vital role in achieving superior mechanical and thermal properties during heat treatment. Next, an electrical conductivity model could accurately predict the Si solute concentration in LPBF-processed and heat-treated AlSi10Mg and allows understanding the microstructural evolution during heat treatment. The LPBF-processed and heat-treated AlSi10Mg conditions (as-built (AB), direct-aged (DA), stress-relieved (SR), preheated (PH)) show an interesting range of superior mechanical properties (tensile strength: 300–450 MPa, elongation: 4–13%) compared to the mould-cast T6 reference condition.P. Van CauwenberghV. SamaeeL. ThijsJ. NejezchlebováP. SedlákA. IvekovićD. SchryversB. Van HoorewederK. VanmeenselNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q P. Van Cauwenbergh V. Samaee L. Thijs J. Nejezchlebová P. Sedlák A. Iveković D. Schryvers B. Van Hooreweder K. Vanmeensel Unravelling the multi-scale structure–property relationship of laser powder bed fusion processed and heat-treated AlSi10Mg
description	Abstract Tailoring heat treatments for Laser Powder Bed Fusion (LPBF) processed materials is critical to ensure superior and repeatable material properties for high-end applications. This tailoring requires in-depth understanding of the LPBF-processed material. Therefore, the current study aims at unravelling the threefold interrelationship between the process (LPBF and heat treatment), the microstructure at different scales (macro-, meso-, micro-, and nano-scale), and the macroscopic material properties of AlSi10Mg. A similar solidification trajectory applies at different length scales when comparing the solidification of AlSi10Mg, ranging from mould-casting to rapid solidification (LPBF). The similarity in solidification trajectories triggers the reason why the Brody-Flemings cellular microsegregation solidification model could predict the cellular morphology of the LPBF as-printed microstructure. Where rapid solidification occurs at a much finer scale, the LPBF microstructure exhibits a significant grain refinement and a high degree of silicon (Si) supersaturation. This study has identified the grain refinement and Si supersaturation as critical assets of the as-printed microstructure, playing a vital role in achieving superior mechanical and thermal properties during heat treatment. Next, an electrical conductivity model could accurately predict the Si solute concentration in LPBF-processed and heat-treated AlSi10Mg and allows understanding the microstructural evolution during heat treatment. The LPBF-processed and heat-treated AlSi10Mg conditions (as-built (AB), direct-aged (DA), stress-relieved (SR), preheated (PH)) show an interesting range of superior mechanical properties (tensile strength: 300–450 MPa, elongation: 4–13%) compared to the mould-cast T6 reference condition.
format	article
author	P. Van Cauwenbergh V. Samaee L. Thijs J. Nejezchlebová P. Sedlák A. Iveković D. Schryvers B. Van Hooreweder K. Vanmeensel
author_facet	P. Van Cauwenbergh V. Samaee L. Thijs J. Nejezchlebová P. Sedlák A. Iveković D. Schryvers B. Van Hooreweder K. Vanmeensel
author_sort	P. Van Cauwenbergh
title	Unravelling the multi-scale structure–property relationship of laser powder bed fusion processed and heat-treated AlSi10Mg
title_short	Unravelling the multi-scale structure–property relationship of laser powder bed fusion processed and heat-treated AlSi10Mg
title_full	Unravelling the multi-scale structure–property relationship of laser powder bed fusion processed and heat-treated AlSi10Mg
title_fullStr	Unravelling the multi-scale structure–property relationship of laser powder bed fusion processed and heat-treated AlSi10Mg
title_full_unstemmed	Unravelling the multi-scale structure–property relationship of laser powder bed fusion processed and heat-treated AlSi10Mg
title_sort	unravelling the multi-scale structure–property relationship of laser powder bed fusion processed and heat-treated alsi10mg
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f4b1d320a83f4b82853cb50bd58a0cdf
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Unravelling the multi-scale structure–property relationship of laser powder bed fusion processed and heat-treated AlSi10Mg

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