High-proportion intragranular nano-Al2O3 induced high strength-ductility Al matrix nano-composites via additive friction extrusion deposition

IF 6.5 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications Pub Date : 2025-03-01 DOI:10.1016/j.coco.2025.102332

Zhou Xl , Liu Zy , Liu Fc , Xiao Bl , Ma Zy

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Abstract

Herein, a novel additive friction extrusion deposition (AFED) solid state additive manufacturing technique was employed to fabricate nano-Al₂O₃/2009Al composite. The severe plastic deformation introduced by AFED led to a uniform dispersion of nano-Al₂O₃ and a significant grain refinement to less than 500 nm in average grain size due to the pinning effect of the dispersed nano-Al₂O₃ particles. As high as 78 % nano-Al₂O₃ particles were observed within the refined grains, rather than along the grain boundaries as previously reported. The unique microstructure with high proportion of intragranular nano-Al₂O₃ particles accumulated dislocations in grain interior, induced pronounced work hardening, thereby achieving high strength-ductility and relatively low yield strength to tensile strength ratio of 0.78 in the AFED Al₂O₃/2009Al composite.

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来源期刊

Composites Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

期刊介绍： Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.