Strong 3D-printed aluminium reinforced with ductile-transformable eutectic nano-skeleton

(Er,Mg) skeleton are associated with deformation twinning and the strain-induced formation of 9R-type long-period stacking ordered structures, which enhance work-hardening of the skeleton and promote cooperative deformation with the α-Al matrix. Laser powder bed fusion yields Al-Er alloys with strengths of 600-700 MPa, together with good printability and useful ductility. These findings establish a new benchmark for structural additively manufactured aluminium alloys, provide a route for developing ductile intermetallics to overcome the strength-ductility trade-off in high-strength aluminium alloys, and demonstrate the role of additive manufacturing in uncovering new alloy systems and deformation mechanisms.

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Publication Details

Journal
Nature Communications
Published
2026-04-25
DOI
https://doi.org/10.1038/s41467-026-72256-4
Primary Topic
Additive Manufacturing Materials and Processes
Type
article
Field-Weighted Citation Impact
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article

Strong 3D-printed aluminium reinforced with ductile-transformable eutectic nano-skeleton

Pucong Sheng, T Chen, Siming Ma, H Z Chen et al.
Nature Communications
Additive Manufacturing Materials and Processes
article

Strong 3D-printed aluminium reinforced with ductile-transformable eutectic nano-skeleton

Pucong Sheng, T Chen, Siming Ma, H Z Chen, Y X Wang, S. Nie, Zhe Chen, Mingliang Wang, Yirui Chang, Yang Li, Gang Ji, Yuchi Cui, Shengyi Zhong, Haixing Fang, Lei Hu, Haowei Wang
article en

Abstract

(Er,Mg) skeleton are associated with deformation twinning and the strain-induced formation of 9R-type long-period stacking ordered structures, which enhance work-hardening of the skeleton and promote cooperative deformation with the α-Al matrix. Laser powder bed fusion yields Al-Er alloys with strengths of 600-700 MPa, together with good printability and useful ductility. These findings establish a new benchmark for structural additively manufactured aluminium alloys, provide a route for developing ductile intermetallics to overcome the strength-ductility trade-off in high-strength aluminium alloys, and demonstrate the role of additive manufacturing in uncovering new alloy systems and deformation mechanisms.

Nature Communications
Centre National de la Recherche Scientifique (FR), École Nationale Supérieure de Chimie de Lille (FR), East China University of Science and Technology (CN), Shanghai Jiao Tong University (CN), Université de Lille (FR), European Synchrotron Radiation Facility (FR), Unité Matériaux et Transformations (FR), NIST Center for Neutron Research (US), Materials Technology (United Kingdom) (GB)
Openalex Percentile: Top 9%
Additive Manufacturing Materials and Processes
DOIOpen Access PDFOpenAlex
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